I. Osaka

发表

Small-bandgap quinoid-based π-conjugated polymers

Tsubasa Mikie, I. Osaka, 2020 .

Thermally, Operationally, and Environmentally Stable Organic Thin-Film Transistors Based on Bis[1]benzothieno[2,3-d:2′,3′-d′]naphtho[2,3-b:6,7-b′]dithiophene Derivatives: Effective Synthesis, Electronic Structures, and Structure–Property Relationship

K. Sugimoto, I. Osaka, K. Takimiya, 2015 .

Consecutive thiophene-annulation approach to π-extended thienoacene-based organic semiconductors with [1]benzothieno[3,2-b][1]benzothiophene (BTBT) substructure.

I. Osaka, K. Takimiya, Tatsuya Yamamoto, 2013, Journal of the American Chemical Society.

Diphenyl derivatives of dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene: organic semiconductors for thermally stable thin-film transistors.

I. Osaka, K. Takimiya, M. Kang, 2013, ACS applied materials & interfaces.

Thienannulation: Efficient Synthesis of π‐Extended Thienoacenes Applicable to Organic Semiconductors

Masahiro Nakano, I. Osaka, K. Takimiya, 2013 .

Largely π-extended thienoacenes with internal thieno[3,2-b]thiophene substructures: synthesis, characterization, and organic field-effect transistor applications.

I. Osaka, K. Takimiya, Tatsuya Yamamoto, 2012, Organic letters.

Thienoacene‐Based Organic Semiconductors

Itaru Osaka, Kazuo Takimiya, I. Osaka, 2011, Advanced materials.

General synthesis of dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DNTT) derivatives.

Itaru Osaka, Kazuo Takimiya, I. Osaka, 2011, Organic letters.

Advances in molecular design and synthesis of regioregular polythiophenes.

Itaru Osaka, R. D. Mccullough, I. Osaka, 2008, Accounts of chemical research.

Stretchable and waterproof elastomer-coated organic photovoltaics for washable electronic textile applications

Takao Someya, Itaru Osaka, Kenjiro Fukuda, 2017 .

2-V operated flexible vertical organic transistor with good air stability and bias stress reliability

Itaru Osaka, Hsiao-Wen Zan, Kazuaki Kawashima, 2017 .

Very Small Bandgap π-Conjugated Polymers with Extended Thienoquinoids.

I. Osaka, Kohsuke Kawabata, K. Takimiya, 2016, Journal of the American Chemical Society.

Semiconducting small molecule/polymer blends for organic transistors

F. S. Kim, I. Osaka, Li‐Hui Chou, 2020 .

Dithiazolylthienothiophene Bisimide-Based π-Conjugated Polymers: Improved Synthesis and Application to Organic Photovoltaics as P-Type Semiconductor

H. Yoshida, Tsubasa Mikie, I. Osaka, 2020 .

Dithiazolylthienothiophene Bisimide: A Novel Electron-Deficient Building Unit for N-Type Semiconducting Polymers.

H. Yoshida, Tsubasa Mikie, I. Osaka, 2019, ACS Applied Materials and Interfaces.

Multi‐Channel Pumped Ultrasonic Spray‐Coating for High‐Throughput and Scalable Mixed Halide Perovskite Solar Cells

I. Osaka, Hao‐Wu Lin, Li‐Hui Chou, 2020, Advanced Materials Interfaces.

Sequential Ultrasonic Spray‐Coating Planar Three Layers for 1 cm 2 Active Area Inverted Perovskite Solar Cells

Chun-Guey Wu, I. Osaka, Li‐Hui Chou, 2020 .

Impact of side chain placement on thermal stability of solar cells in thiophene–thiazolothiazole polymers

I. Osaka, M. Saito, 2018 .

Dibenzo[a,e]pentalene-embedded dicyanomethylene-substituted thienoquinoidals for n-channel organic semiconductors: synthesis, properties, and device characteristics

Masahiro Nakano, I. Osaka, K. Takimiya, 2015 .

Dithienylthienothiophenebisimide, a Versatile Electron‐Deficient Unit for Semiconducting Polymers

I. Osaka, K. Takimiya, M. Saito, 2016, Advanced materials.

Drastic Change of Molecular Orientation in a Thiazolothiazole Copolymer by Molecular‐Weight Control and Blending with PC61BM Leads to High Efficiencies in Solar Cells

T. Koganezawa, I. Osaka, K. Takimiya, 2012, Advanced materials.

Helically π-Stacked Thiophene-Based Copolymers with Circularly Polarized Fluorescence: High Dissymmetry Factors Enhanced by Self-Ordering in Chiral Nematic Liquid Crystal Phase

K. Akagi, I. Osaka, Kazuyoshi Watanabe, 2012 .

Highly Oriented Polymer Semiconductor Films Compressed at the Surface of Ionic Liquids for High‐Performance Polymeric Organic Field‐Effect Transistors

I. Osaka, K. Takimiya, H. Matsui, 2014, Advanced materials.

Naphthodithiophenediimide (NDTI)-based triads for high-performance air-stable, solution-processed ambipolar organic field-effect transistors

Masahiro Nakano, I. Osaka, K. Takimiya, 2015 .

Naphthodithiophenediimide (NDTI): synthesis, structure, and applications.

Masahiro Nakano, I. Osaka, K. Takimiya, 2013, Journal of the American Chemical Society.

Reduced exchange narrowing caused by gate-induced charge carriers in high-mobility donor-acceptor copolymers

S. Matsuoka, I. Osaka, J. Tsutsumi, 2017 .

All-Polymer Solar Cell with High Near-Infrared Response Based on a Naphthodithiophene Diimide (NDTI) Copolymer.

S. Izawa, Masahiro Nakano, I. Osaka, 2014, ACS macro letters.

Analyses of Charge Accumulation of PTzBT Ternary Polymer Solar Cells Using ESR Spectroscopy

I. Osaka, M. Saito, K. Marumoto, 2021, Journal of Photopolymer Science and Technology.

[2,2']Bi[naphtho[2,3-b]furanyl]: a versatile organic semiconductor with a furan-furan junction.

C. Adachi, I. Osaka, K. Takimiya, 2012, Chemical communications.

Achieving high efficiency and stability in inverted organic solar cells fabricated by laminated gold leaf as top electrodes

Varun Vohra, H. Murata, I. Osaka, 2014 .

Mixed selenium-sulfur fused ring systems as building blocks for novel polymers used in field effect transistors

R. D. Mccullough, I. Osaka, Anna E. Javier, 2011 .

Impact of isomeric structures on transistor performances in naphthodithiophene semiconducting polymers.

I. Osaka, K. Takimiya, S. Shinamura, 2011, Journal of the American Chemical Society.

Benzobisthiazole‐Based Semiconducting Copolymers Showing Excellent Environmental Stability in High‐Humidity Air

R. D. Mccullough, I. Osaka, K. Takimiya, 2010, Advanced materials.

Tunable Photoelectric Properties of n‐Type Semiconducting Polymer:Small Molecule Blends for Red Light Sensing Phototransistors

S. Tung, Ming‐Chou Chen, I. Osaka, 2022, Advanced Optical Materials.

Molecular ordering of spin-coated and electrosprayed P3HT:PCBM thin films and their applications to photovoltaic cell

I. Osaka, T. Fukuda, M. Saito, 2016 .

Isomerically pure anthra[2,3-b:6,7-b']-difuran (anti-ADF), -dithiophene (anti-ADT), and -diselenophene (anti-ADS): selective synthesis, electronic structures, and application to organic field-effect transistors.

Masahiro Nakano, I. Osaka, K. Takimiya, 2012, The Journal of organic chemistry.

Bithiazole Dicarboxylate Ester: An Easily Accessible Electron-Deficient Building Unit for π-Conjugated Polymers Enabling Electron Transport

Tsubasa Mikie, I. Osaka, M. Saito, 2021 .

Naphthobischalcogenadiazole Conjugated Polymers: Emerging Materials for Organic Electronics

I. Osaka, K. Takimiya, 2017, Advanced materials.

On-top π-stacking of quasiplanar molecules in hole-transporting materials: inducing anisotropic carrier mobility in amorphous films.

I. Osaka, Y. Murata, A. Wakamiya, 2014, Angewandte Chemie.

Ultrasonic Spray-Coated Mixed Cation Perovskite Films and Solar Cells

I. Osaka, Li‐Hui Chou, Cheng‐Liang Liu, 2019, ACS Sustainable Chemistry & Engineering.

Scalable Ultrasonic Spray-Processing Technique for Manufacturing Large-Area CH3NH3PbI3 Perovskite Solar Cells.

Cheng-Liang Liu, I. Osaka, Li‐Hui Chou, 2018, ACS applied materials & interfaces.

Ester-functionalized quinoxaline-based polymers for application in organic photovoltaics

Tsubasa Mikie, I. Osaka, Yuka Iwasaki, 2022, Materials Chemistry and Physics.

Effect of Chalcogen Atom on the Properties of Naphthobischalcogenadiazole-Based π-Conjugated Polymers

I. Osaka, K. Takimiya, K. Kawashima, 2015 .

Synergetic Effect on Enhanced Photovoltaic Performance of Spray-Coated Perovskite Solar Cells Enabled by Additive Doping and Antisolvent Additive Spraying Treatment

Ming‐Chou Chen, I. Osaka, Li‐Hui Chou, 2022, ACS Applied Energy Materials.

Exploring Alkyl Chains in Benzobisthiazole-Naphthobisthiadiazole Polymers: Impact on Solar-Cell Performance, Crystalline Structures, and Optoelectronics.

I. Osaka, A. Saeki, Eman Al-Naamani, 2017, ACS applied materials & interfaces.

Naphthodithiophene-naphthobisthiadiazole copolymers for solar cells: alkylation drives the polymer backbone flat and promotes efficiency.

T. Koganezawa, I. Osaka, K. Takimiya, 2013, Journal of the American Chemical Society.

Novel Thiophene‐Thiazolothiazole Copolymers for Organic Field‐Effect Transistors

Rui Zhang, T. Kowalewski, R. D. Mccullough, 2007 .

Thienothiophene‐2,5‐Dione‐Based Donor–Acceptor Polymers: Improved Synthesis and Influence of the Donor Units on Ambipolar Charge Transport Properties

Masahiro Nakano, T. Koganezawa, I. Osaka, 2015 .

Naphthodithiophene Diimide (NDTI)-Based Semiconducting Copolymers: From Ambipolar to Unipolar n-Type Polymers

Masahiro Nakano, I. Osaka, K. Takimiya, 2015 .

π-Building Blocks for Organic Electronics: Revaluation of “Inductive” and “Resonance” Effects of π-Electron Deficient Units

Masahiro Nakano, I. Osaka, K. Takimiya, 2014 .

Highly nucleophilic vitamin B12-assisted nickel-catalysed reductive coupling of aryl halides and non-activated alkyl tosylates.

I. Osaka, K. Komeyama, R. Ohata, 2017, Chemical communications.

Naphthodithiophene-Based Donor-Acceptor Polymers: Versatile Semiconductors for OFETs and OPVs.

T. Koganezawa, I. Osaka, K. Takimiya, 2012, ACS macro letters.

One-Step Spray-Coated All-Inorganic CsPbI2Br Perovskite Solar Cells

I. Osaka, Li‐Hui Chou, Cheng‐Liang Liu, 2021 .

Visible light-driven Giese reaction with alkyl tosylates catalysed by nucleophilic cobalt

I. Osaka, Yoshikazu Teshima, K. Komeyama, 2021, RSC advances.

π-Conjugated Polymers Incorporating Naphthalene-Based Nitrogen-Containing Heteroaromatics for Organic Photovoltaics

I. Osaka, 2021 .

Highly Efficient and Stable Solar Cells Based on Thiazolothiazole and Naphthobisthiadiazole Copolymers

I. Osaka, K. Takimiya, M. Saito, 2015, Scientific Reports.

Regioregular and Regiosymmetric Polythiophenes

R. D. Mccullough, I. Osaka, 2010 .

Spray deposition of NiOx hole transport layer and perovskite photoabsorber in fabrication of photovoltaic mini-module

Xiaofeng Wang, I. Osaka, Li‐Hui Chou, 2021 .

N-type Semiconducting Polymers Based on Dicyano Naphthobisthiadiazole: High Electron Mobility with Unfavorable Backbone Twist

Tsubasa Mikie, I. Osaka, Y. Ie, 2021 .

Selective Synthesis and Properties of Electron-Deficient Hybrid Naphthalene-Based π-Conjugated Systems.

Tsubasa Mikie, I. Osaka, 2018, Chemistry.

Solution Processable Pentafluorophenyl End‐Capped Dithienothiophene Organic Semiconductors for Hole‐Transporting Organic Field Effect Transistors

S. Tung, S. Yau, Ming‐Chou Chen, 2021, Advanced Electronic Materials.

Extended π-Electron Delocalization in Quinoid-Based Conjugated Polymers Boosts Intrachain Charge Carrier Transport

T. Koganezawa, Tsubasa Mikie, I. Osaka, 2021, Chemistry of Materials.

Effect of Spacer Length in Naphthobispyrazine-Based π-Conjugated Polymers on Properties, Thin Film Structures, and Photovoltaic Performances

Tsubasa Mikie, I. Osaka, Yoshikazu Teshima, 2020 .

Copper-Catalyzed Borylstannylation of Alkynes with Tin Fluorides

H. Yoshida, I. Osaka, K. Takaki, 2017 .

Grignard Metathesis Method (GRIM): Toward a Universal Method for the Synthesis of Conjugated Polymers

M. Stefan, R. D. Mccullough, I. Osaka, 2009 .

Phosphonic acid self-assembled monolayer and amorphous hafnium oxide hybrid dielectric for high performance polymer thin film transistors on plastic substrates

A. Jen, Daniel O. Hutchins, Hong Ma, 2009 .

Thienannulation: Efficient Synthesis of π‐Extended Thienoacenes Applicable to Organic Semiconductors

Masahiro Nakano, I. Osaka, K. Takimiya, 2013 .

Amide-bridged terphenyl and dithienylbenzene units for semiconducting polymers

T. Koganezawa, I. Osaka, K. Takimiya, 2016 .

Correlation between Distribution of Polymer Orientation and Cell Structure in Organic Photovoltaics.

T. Koganezawa, I. Osaka, M. Saito, 2018, ACS applied materials & interfaces.

Linear- and angular-shaped naphthodithiophenes: selective synthesis, properties, and application to organic field-effect transistors.

I. Osaka, K. Takimiya, J. Takeya, 2011, Journal of the American Chemical Society.

Novel dibenzo[a,e]pentalene-based conjugated polymers

Masahiro Nakano, T. Koganezawa, I. Osaka, 2013 .

High-lamellar ordering and amorphous-like pi-network in short-chain thiazolothiazole-thiophene copolymers lead to high mobilities.

T. Kowalewski, R. D. Mccullough, I. Osaka, 2009, Journal of the American Chemical Society.

High-mobility semiconducting naphthodithiophene copolymers.

I. Osaka, K. Takimiya, E. Miyazaki, 2010, Journal of the American Chemical Society.

Direct Evidence of Less Charge Accumulation in Highly Durable Polymer Solar Cells Using Operando Electron Spin Resonance Spectroscopy

I. Osaka, M. Saito, K. Marumoto, 2020 .

Direct Evidence of Less Charge Accumulation in Highly Durable Polymer Solar Cells Using Operando ESR Spectroscopy

I. Osaka, K. Marumoto, Masahiko Saito, 2020 .

Understanding Comparable Charge Transport Between Edge-on and Face-on Polymers in a Thiazolothiazole Polymer System

T. Koganezawa, I. Osaka, M. Saito, 2019, ACS Applied Polymer Materials.

Semiconducting polymers based on electron-deficient π-building units

I. Osaka, 2015 .

Contrasting Effect of Alkylation on the Ordering Structure in Isomeric Naphthodithiophene-Based Polymers

T. Koganezawa, I. Osaka, K. Takimiya, 2014 .

Crystalline conjugated polymers for organic electronics

I. Osaka, K. Takimiya, 2014 .

Quinacridone-Diketopyrrolopyrrole-Based Polymers for Organic Field-Effect Transistors

I. Osaka, K. Takimiya, M. Akita, 2013, Materials.

Naphthodithiophenes as building units for small molecules to polymers; a case study for in-depth understanding of structure–property relationships in organic semiconductors

I. Osaka, K. Takimiya, S. Shinamura, 2013 .

Quinacridone-Based Semiconducting Polymers: Implication of Electronic Structure and Orientational Order for Charge Transport Property

T. Koganezawa, I. Osaka, K. Takimiya, 2012 .

Synthesis and characterization of benzo[1,2-b:3,4-b':5,6-b'']trithiophene (BTT) oligomers.

I. Osaka, K. Takimiya, E. Miyazaki, 2011, The Journal of organic chemistry.

5, 10-linked naphthodithiophenes as the building block for semiconducting polymers

T. Koganezawa, I. Osaka, K. Takimiya, 2014, Science and technology of advanced materials.

Donor-Acceptor Semiconducting Polymers Based on Thiazole-Containing Fused-Rings for Organic Field-Effect Transistors

R. D. Mccullough, I. Osaka, K. Takimiya, 2011 .

5,10-Diborylated naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole: a ready-to-use precursor for the synthesis of high-performance semiconducting polymers

I. Osaka, K. Takimiya, Hiroki Mori, 2013 .

Naphthodithiophenes: emerging building blocks for organic electronics.

I. Osaka, K. Takimiya, 2015, Chemical record.

Orthogonally functionalized naphthodithiophenes: selective protection and borylation.

I. Osaka, K. Takimiya, E. Miyazaki, 2012, Organic letters.

Facile synthesis of [1]benzothieno[3,2-b]benzothiophene from o-dihalostilbenes

I. Osaka, K. Takimiya, M. Saito, 2010 .

Synthesis and properties of liquid crystaline polythiophene derivatives

K. Akagi, H. Shirakawa, I. Osaka, 1999 .

Dithienyl Acenedithiophenediones as New π-Extended Quinoidal Cores: Synthesis and Properties.

I. Osaka, Kohsuke Kawabata, K. Takimiya, 2017, Chemistry.

Insight into how molecular structures of thiophene-based conjugated polymers affect crystallization behaviors

Itaru Osaka, Lei Zhai, Jianhua Zou, 2011 .

Synthesis and Characterization of an Alkoxythiazole-thiazolothiazole Semiconducting Polymer for Organic Solar Cells

I. Osaka, M. Saito, 2017 .

Naphthodithiophene Diimide-Based Copolymers: Ambipolar Semiconductors in Field-Effect Transistors and Electron Acceptors with Near-Infrared Response in Polymer Blend Solar Cells

Masahiro Nakano, I. Osaka, Erjun Zhou, 2016 .

Ligand-Free Copper-Catalyzed Cyano- and Alkynylstannylation of Arynes

H. Yoshida, Y. Ooyama, I. Osaka, 2017 .

Nickel and Nucleophilic Cobalt-Catalyzed Trideuteriomethylation of Aryl Halides Using Trideuteriomethyl p-Toluenesulfonate.

I. Osaka, K. Komeyama, Yuta Yamahata, 2018, Organic letters.

Ni/Co-Catalyzed Homo-Coupling of Alkyl Tosylates

H. Yoshida, I. Osaka, K. Komeyama, 2019, Molecules.

Copper‐Catalyzed B(dan)‐Installing Allylic Borylation of Allylic Phosphates

H. Yoshida, I. Osaka, Yuya Murashige, 2019, Advanced Synthesis & Catalysis.

An anthranilamide-substituted borane [H-B(aam)]: its stability and application to iridium-catalyzed stereoselective hydroboration of alkynes.

H. Yoshida, I. Osaka, M. Kimura, 2019, Chemical communications.

Anthranilamide (aam)-substituted arylboranes in direct carbon-carbon bond-forming reactions.

H. Yoshida, I. Osaka, Ikuo Kageyuki, 2019, Chemical communications.

Anthranilamide (aam)-substituted diboron: palladium-catalyzed selective B(aam) transfer.

H. Yoshida, I. Osaka, M. Abe, 2018, Chemical communications.

Nickel/Cobalt-Catalyzed C(sp3)–C(sp3) Cross-Coupling of Alkyl Halides with Alkyl Tosylates

I. Osaka, K. Komeyama, Takuya Michiyuki, 2019, ACS Catalysis.

Organic semiconductors based on [1]benzothieno[3,2-b][1]benzothiophene substructure.

Masahiro Nakano, I. Osaka, K. Takimiya, 2014, Accounts of chemical research.

B(MIDA)-Containing Diborons

H. Yoshida, I. Osaka, M. Abe, 2017, ACS omega.

Aryne–Imine–Aryne Coupling Reaction via [4+2] Cycloaddition between Aza-o-Quinone Methides and Arynes

H. Yoshida, I. Osaka, K. Takaki, 2017 .

Copper-catalyzed Borylation of Bromoaryl Triflates with Diborons: Chemoselective Replacement of an Ar–Br Bond

H. Yoshida, I. Osaka, Shintaro Kamio, 2018, Chemistry Letters.

Copper-Catalyzed B(dan)-Installing Carboboration of Alkenes.

H. Yoshida, I. Osaka, K. Takaki, 2017, Organic letters.

Dianthra[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DATT): synthesis, characterization, and FET characteristics of new π-extended heteroarene with eight fused aromatic rings.

Itaru Osaka, Kazuo Takimiya, I. Osaka, 2011, Journal of the American Chemical Society.

Air‐Stable and High‐Mobility Organic Semiconductors Based on Heteroarenes for Field‐Effect Transistors

I. Osaka, K. Takimiya, E. Miyazaki, 2011 .

Design and elaboration of organic molecules for high field-effect-mobility semiconductors

Itaru Osaka, Kazuo Takimiya, Masahiro Nakano, 2016 .

Soluble Dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene Derivatives for Solution-Processed Organic Field-Effect Transistors.

I. Osaka, K. Takimiya, M. Kang, 2016, ACS applied materials & interfaces.

Copper-catalyzed direct borylation of alkyl, alkenyl and aryl halides with B(dan)

H. Yoshida, I. Osaka, K. Takaki, 2017 .

Three-component coupling of aryl iodides, allenes, and aldehydes catalyzed by a Co/Cr-hybrid catalyst

I. Osaka, K. Takaki, K. Komeyama, 2018, Beilstein journal of organic chemistry.

Reductive amidation of alkyl tosylates with isocyanates by a Ni/Co-dual catalytic system.

I. Osaka, K. Komeyama, Takuya Michiyuki, 2020, Chemical communications.

Quinoidal naphtho[1,2-b:5,6-b']dithiophenes for solution-processed n-channel organic field-effect transistors.

I. Osaka, K. Takimiya, Takamichi Mori, 2014, Organic letters.

Highly Stable Semiconducting Polymers Based on Thiazolothiazole

T. Kowalewski, R. D. Mccullough, I. Osaka, 2010 .

Transistor Paint: Environmentally Stable N‐alkyldithienopyrrole and Bithiazole‐Based Copolymer Thin‐Film Transistors Show Reproducible High Mobilities without Annealing

Itaru Osaka, Detlef-M. Smilgies, Rui Zhang, 2009 .

Angular‐Shaped 4,9‐Dialkyl α‐ and β‐Naphthodithiophene‐Based Donor–Acceptor Copolymers: Investigation of Isomeric Structural Effects on Molecular Properties and Performance of Field‐Effect Transistors and Photovoltaics

Chain‐Shu Hsu, I. Osaka, K. Takimiya, 2015 .

Dithiophene-Fused Tetracyanonaphthoquinodimethanes (DT-TNAPs): synthesis and characterization of π-extended quinoidal compounds for n-channel organic semiconductor.

I. Osaka, K. Takimiya, Takamichi Mori, 2014, Organic letters.

Quinoidal Oligothiophenes with (Acyl)cyanomethylene Termini: Synthesis, Characterization, Properties, and Solution Processed n-Channel Organic Field-Effect Transistors†

I. Osaka, K. Takimiya, Yuki Suzuki, 2011 .

Direct Suzuki–Miyaura Coupling with Naphthalene-1,8-diaminato (dan)-Substituted Organoborons

H. Yoshida, I. Osaka, T. Tsuchimoto, 2020, ACS Catalysis.

Naphthobispyrazine Bisimide: A Strong Acceptor Unit for Conjugated Polymers Enabling Highly Coplanar Backbone, Short π–π Stacking, and High Electron Transport

T. Koganezawa, Tsubasa Mikie, I. Osaka, 2022, Chemistry of Materials.

Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes

T. Someya, T. Yokota, Wakako Yukita, 2020, Nature Communications.

π-Conjugated polymers and molecules enabling small photon energy loss simultaneously with high efficiency in organic photovoltaics

I. Osaka, H. Ohkita, M. Saito, 2020, Journal of Materials Chemistry A.

Impact of Noncovalent Sulfur–Fluorine Interaction Position on Properties, Structures, and Photovoltaic Performance in Naphthobisthiadiazole‐Based Semiconducting Polymers

T. Koganezawa, I. Osaka, H. Ohkita, 2020, Advanced Energy Materials.

High Operation Stability of Ultraflexible Organic Solar Cells with Ultraviolet‐Filtering Substrates

T. Someya, H. Jinno, I. Osaka, 2019, Advanced materials.

Durable Ultraflexible Organic Photovoltaics with Novel Metal‐Oxide‐Free Cathode

T. Someya, T. Yokota, D. Hashizume, 2018, Advanced Functional Materials.

Copper-catalyzed arylstannylation of arynes in a sequence.

H. Yoshida, I. Osaka, Teruhiko Kubo, 2019, Chemical communications.

One-pot Sequential Fluorostannylation–Arylstannylation of Arynes

H. Yoshida, I. Osaka, Hideya Tanaka, 2019, Chemistry Letters.

Facile Syntheses of Anthra[2,3‐b]chalcogenophenes.

I. Osaka, K. Takimiya, E. Miyazaki, 2012 .

Facile Syntheses of Anthra[2,3-b]chalcogenophenes

I. Osaka, K. Takimiya, E. Miyazaki, 2012 .

Molecular Understanding of How the Interfacial Structure Impacts the Open-Circuit Voltage of Highly Crystalline Polymer Solar Cells.

I. Osaka, H. Ohkita, M. Saito, 2021, ACS applied materials & interfaces.

Effects of branching position of alkyl side chains on ordering structure and charge transport property in thienothiophenedione- and quinacridone-based semiconducting polymers

I. Osaka, Kohsuke Kawabata, K. Takimiya, 2017 .

Two Isomeric Didecyl-dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophenes: Impact of Alkylation Positions on Packing Structures and Organic Field Effect Transistor Characteristics

I. Osaka, K. Takimiya, M. Kang, 2012 .

One-step synthesis of [1]benzothieno[3,2-b][1]benzothiophene from o-chlorobenzaldehyde

I. Osaka, K. Takimiya, M. Saito, 2011 .

Small band gap polymers incorporating a strong acceptor, thieno[3,2-b]thiophene-2,5-dione, with p-channel and ambipolar charge transport characteristics

T. Koganezawa, I. Osaka, K. Takimiya, 2014 .

Reverse‐Offset Printed Ultrathin Ag Mesh for Robust Conformal Transparent Electrodes for High‐Performance Organic Photovoltaics

T. Someya, Hanbit Jin, Xiaomin Xu, 2018, Advanced materials.

Stability improvement mechanism due to less charge accumulation in ternary polymer solar cells

I. Osaka, K. Marumoto, D. Xue, 2022, npj Flexible Electronics.

Flexible air-stable three-dimensional polymer field-effect transistors with high output current density

Wei Ou-Yang, I. Osaka, K. Takimiya, 2013 .

Controlled steric selectivity in molecular doping towards closest-packed supramolecular conductors

Tsubasa Mikie, I. Osaka, K. Takimiya, 2020, Communications Materials.

Synthesis and Properties of Liquid Crystalline Polythiophene and Polythienylenevinylene Derivatives

K. Akagi, I. Osaka, H. Goto, 2001 .

Dichroic fluorescence of liquid crystalline polythiophene and polythienylenevinylene derivatives

K. Akagi, I. Osaka, H. Goto, 2001 .

A family of liquid crystalline polyarylenevinylenes

K. Akagi, H. Shirakawa, I. Osaka, 1999 .

Advanced Functional Regioregular Polythiophenes

R. D. Mccullough, I. Osaka, 2010 .

Thieno[3,4-c]pyrrole-incorporated quinoidal terthiophene with dicyanomethylene termini: synthesis, characterization, and redox properties

I. Osaka, K. Takimiya, E. Miyazaki, 2010 .

Donor–Acceptor Polymers Containing 4,8-Dithienylbenzo[1,2-b:4,5-b′]dithiophene via Highly Selective Direct Arylation Polymerization

I. Osaka, M. Saito, F. Ozawa, 2021 .

α-Modified Naphthodithiophene Diimides—Molecular Design Strategy for Air-Stable n-Channel Organic Semiconductors

Masahiro Nakano, D. Hashizume, I. Osaka, 2015 .

High-efficiency polymer solar cells with small photon energy loss

Itaru Osaka, Kazuaki Kawashima, Kazuo Takimiya, 2015, Nature Communications.

Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers.

T. Koganezawa, I. Osaka, H. Ohkita, 2016, Journal of the American Chemical Society.

Efficient inverted polymer solar cells employing favourable molecular orientation

Itaru Osaka, Tomoyuki Koganezawa, Varun Vohra, 2015, Nature Photonics.

Naphthobispyrazine bisimide-based semiconducting polymers as electron acceptors for all-polymer photovoltaic cells

Tsubasa Mikie, I. Osaka, Kenta Okamoto, 2023, Polymer Journal.

Naphthobisthiadiazole‐Based Semiconducting Polymers for High‐Efficiency Organic Photovoltaics

I. Osaka, K. Takimiya, 2021, Organic Semiconductors for Optoelectronics.

Title High-efficiency polymer solar cells with small photon energyloss

I. Osaka, H. Ohkita, K. Takimiya, 2018 .

Organic photovoltaics based on 5-hexylthiophene-fused porphyrazines

Itaru Osaka, Hiroki Mori, Kazuo Takimiya, 2012 .

Cumulative gain in organic solar cells by using multiple optical nanopatterns

S. Heo, I. Osaka, K. Tajima, 2017 .

Pronounced Backbone Coplanarization by π-Extension in a Sterically Hindered Conjugated Polymer System Leads to Higher Photovoltaic Performance in Non-Fullerene Solar Cells.

Tsubasa Mikie, I. Osaka, H. Ohkita, 2021, ACS applied materials & interfaces.

Significantly Sensitized Ternary Blend Polymer Solar Cells with a Very Small Content of the Narrow-Band Gap Third Component That Utilizes Optical Interference

I. Osaka, H. Ohkita, M. Saito, 2020, Macromolecules.

Control of Major Carriers in an Ambipolar Polymer Semiconductor by Self‐Assembled Monolayers

Masahiro Nakano, I. Osaka, K. Takimiya, 2017, Advanced materials.

Effect of Oxygen‐Containing Functional Side Chains on the Electronic Properties and Photovoltaic Performances in a Thiophene–Thiazolothiazole Copolymer System

T. Koganezawa, I. Osaka, K. Takimiya, 2014 .

Synthesis, characterization, and transistor and solar cell applications of a naphthobisthiadiazole-based semiconducting polymer.

T. Koganezawa, I. Osaka, K. Takimiya, 2012, Journal of the American Chemical Society.

On the role of local charge carrier mobility in the charge separation mechanism of organic photovoltaics.

I. Osaka, M. Saito, A. Saeki, 2015, Physical chemistry chemical physics : PCCP.

Thiophene–Thiazolothiazole Copolymers: Significant Impact of Side Chain Composition on Backbone Orientation and Solar Cell Performances

T. Koganezawa, I. Osaka, K. Takimiya, 2014, Advanced materials.

Halogen‐Free π‐Conjugated Polymers Based on Thienobenzobisthiazole for Efficient Nonfullerene Organic Solar Cells: Rational Design for Achieving High Backbone Order and High Solubility

Tsubasa Mikie, I. Osaka, H. Ohkita, 2022, Advanced science.

Effect of Ester Side Chains on Photovoltaic Performance in Thiophene-Thiazolothiazole Copolymers

Tsubasa Mikie, I. Osaka, M. Saito, 2021, Bulletin of the Chemical Society of Japan.

Polymer Solar Cells: Development of π-Conjugated Polymers with Controlled Energetics and Structural Orders

I. Osaka, 2020, Organic Solar Cells.

A Thiazolothiazole-Based Semiconducting Polymer with Well-Balanced Hole and Electron Mobilities

Masahiko Saito, Itaru Osaka, I. Osaka, 2019, Applied Sciences.

Analyses of Thiophene-Based Donor–Acceptor Semiconducting Polymers toward Designing Optical and Conductive Properties: A Theoretical Perspective

I. Osaka, K. Takimiya, Y. Imamura, 2016 .

Backbone orientation in semiconducting polymers

I. Osaka, K. Takimiya, 2015 .

Angular-shaped naphthodifurans, naphtho[1,2-b;5,6-b']- and naphtho[2,1-b;6,5-b']-difuran: are they isoelectronic with chrysene?

Masahiro Nakano, I. Osaka, K. Takimiya, 2012, Chemical communications.

Mixed-Ligand Approach to Palladium-Catalyzed Direct Arylation Polymerization: Synthesis of Donor–Acceptor Polymers Containing Unsubstituted Bithiophene Units

I. Osaka, M. Saito, F. Ozawa, 2020 .

Ester-Functionalized Naphthobispyrazine as an Acceptor Building Unit for Semiconducting Polymers: Synthesis, Properties, and Photovoltaic Performance

Tsubasa Mikie, I. Osaka, 2019, Macromolecules.

High-power three-dimensional polymer FETs

I. Osaka, K. Takimiya, T. Okamoto, 2012 .

Microscopic Mechanism of High Efficiency and Stability of Inverted Polymer Fullerene Solar Cells

I. Osaka, Seira Yamaguchi, K. Marumoto, 2023, ACS Applied Energy Materials.

Bimolecular recombination and fill factor in crystalline polymer solar cells

I. Osaka, H. Ohkita, Yasunari Tamai, 2017, Japanese Journal of Applied Physics.

Enhanced Photovoltaic Performance of Amorphous Copolymers Based on Dithienosilole and Dioxocycloalkene-annelated Thiophene

I. Osaka, Y. Ie, Y. Aso, 2014 .

Organic Semiconductors Based on [1]Benzothieno[3,2‐b][1]benzothiophene Substructure

Masahiro Nakano, I. Osaka, K. Takimiya, 2014 .

Stretchable and waterproof elastomer-coated organic photovoltaics for washable electronic textile applications

T. Someya, T. Yokota, Mari Koizumi, 2017, Nature Energy.

Naphthobisthiadiazole-Based π-Conjugated Polymers for Nonfullerene Solar Cells: Suppressing Intermolecular Interaction Improves Photovoltaic Performance.

Tsubasa Mikie, I. Osaka, Li‐Hui Chou, 2022, ACS applied materials & interfaces.

Contrasting Effect of Side-Chain Placement on Photovoltaic Performance of Binary and Ternary Blend Organic Solar Cells in Benzodithiophene-Thiazolothiazole Polymers.

I. Osaka, M. Saito, Soichiro Ogawa, 2021, ChemSusChem.

Interplay Between π‐Conjugated Polymer Donors and Acceptors Determines Crystalline Order of Their Blends and Photovoltaic Performance

T. Koganezawa, I. Osaka, H. Ohkita, 2023, Advanced Energy Materials.

Ordered π-conjugated polymer backbone in amorphous blend for high efficiency nonfullerene organic photovoltaics

Tsubasa Mikie, I. Osaka, A. Saeki, 2023, Communications Materials.

Advances in molecular design and synthesis of regioregular polythiophenes.

R. D. Mccullough, I. Osaka, 2008, Accounts of chemical research.

Naphthodithiophene-naphthobisthiadiazole copolymers for solar cells: alkylation drives the polymer backbone flat and promotes efficiency.

T. Koganezawa, I. Osaka, K. Takimiya, 2013, Journal of the American Chemical Society.

Borylation on benzo[1,2-b:4,5-b']- and naphtho[1,2-b:5,6-b']dichalcogenophenes: different chalcogene atom effects on borylation reaction depending on fused ring structure.

Masahiro Nakano, I. Osaka, K. Takimiya, 2012, Organic letters.

Synthesis, characterization, and transistor and solar cell applications of a naphthobisthiadiazole-based semiconducting polymer.

T. Koganezawa, I. Osaka, K. Takimiya, 2012, Journal of the American Chemical Society.

Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers

I. Osaka, A. Saeki, Eman Al-Naamani, 2015 .

Exploring Alkyl Chains in Benzobisthiazole-Naphthobisthiadiazole Polymers: Impact on Solar-Cell Performance, Crystalline Structures, and Optoelectronics.

I. Osaka, A. Saeki, Eman Al-Naamani, 2017, ACS applied materials & interfaces.

Synthesis and Deformable Hierarchical Nanostructure of Intrinsically Stretchable ABA Triblock Copolymer Composed of Poly(3-hexylthiophene) and Polyisobutylene Segments

Tomoya Higashihara, T. Koganezawa, I. Osaka, 2019, ACS Applied Polymer Materials.

High-mobility semiconducting naphthodithiophene copolymers.

I. Osaka, K. Takimiya, E. Miyazaki, 2010, Journal of the American Chemical Society.

Drastic Change of Molecular Orientation in a Thiazolothiazole Copolymer by Molecular‐Weight Control and Blending with PC61BM Leads to High Efficiencies in Solar Cells

T. Koganezawa, I. Osaka, K. Takimiya, 2012, Advanced materials.

Bimolecular recombination and fill factor in crystalline polymer solar cells

I. Osaka, Yasunari Tamai, T. Fukuhara, 2017, Japanese Journal of Applied Physics.

Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers.

T. Koganezawa, I. Osaka, K. Takimiya, 2016, Journal of the American Chemical Society.

Employment of Alkoxy Sidechains in Semicrystalline Semiconducting Polymers for Ambient-Stable p-Doped Conjugated Polymers

Tadanori Kurosawa, Tsubasa Mikie, I. Osaka, 2023, Macromolecules.

Highly Oriented Polymer Semiconductor Films Compressed at the Surface of Ionic Liquids for High‐Performance Polymeric Organic Field‐Effect Transistors

I. Osaka, K. Takimiya, H. Matsui, 2014, Advanced materials.

Three-component coupling of aryl iodides, allenes, and aldehydes catalyzed by a Co/Cr-hybrid catalyst

I. Osaka, K. Takaki, K. Komeyama, 2018, Beilstein journal of organic chemistry.

Simple π-Conjugated Polymers Based on Bithiazole for Nonfullerene Organic Photovoltaics.

Tsubasa Mikie, I. Osaka, Yoshikazu Teshima, 2024, ACS applied materials & interfaces.

On-top π-stacking of quasiplanar molecules in hole-transporting materials: inducing anisotropic carrier mobility in amorphous films.

I. Osaka, Y. Murata, A. Wakamiya, 2014, Angewandte Chemie.

Scalable Ultrasonic Spray-Processing Technique for Manufacturing Large-Area CH3NH3PbI3 Perovskite Solar Cells.

I. Osaka, Chun‐Guey Wu, Cheng‐Liang Liu, 2018, ACS applied materials & interfaces.