Non‐Volatile Organic Memory Applications Enabled by In Situ Synthesis of Gold Nanoparticles in a Self‐Assembled Block Copolymer

Block copolymers have unique associative properties that facilitate self-assembly into nanostructures that have been widely used in soft lithography, templating, drug delivery, biomedical, and chemical catalytic applications. Of special interest is the in situ preparation of metallic or semiconducting nanoparticles in amphiphilic block copolymers. The synthesis of nanoparticles in block copolymer micelles solves the problem of particle size control and stabilization compared to classical stabilization systems that employ surfactants or microemulsions. Nanocrystal-based organic memories are attracting widespread interest owing to their simple structure and the prospect of creating 2D/3D stacks of these memory cells for increased bit densities. Recent reviews summarize the literature for these nanoparticle-based organic memories comprehensively, and have identified the main operating mechanisms to be one of the following: (i) an electricfield-induced charge transfer between the nanoparticles and the surrounding conjugated compounds, (ii) filamentary conduction, (iii) charge trapping–detrapping, and (iv) space-charge field inhibition of injection in the nanoparticles through a high-voltage pulse. Besides the widely used two-terminal bistable organic memory devices, an

[1]  U. Jeng,et al.  The Effect of Nanoscale Confinement on the Collective Electron Transport Behavior in Au Nanoparticles Self‐Assembled in a Nanostructured Polystyrene‐block‐poly(4‐vinylpyridine) Diblock Copolymer Ultra‐thin Film , 2007 .

[2]  J. C. Scott,et al.  Nonvolatile Memory Elements Based on Organic Materials , 2007 .

[3]  Shibing Long,et al.  Fabrication and charging characteristics of MOS capacitor structure with metal nanocrystals embedded in gate oxide , 2007 .

[4]  Wei Lin Leong,et al.  Charging phenomena in pentacene-gold nanoparticle memory device , 2007 .

[5]  Gerwin Gelinck,et al.  Semiconductor electronics: Trapped fast at the gate , 2007, Nature.

[6]  Dago M. de Leeuw,et al.  Switching and filamentary conduction in non-volatile organic memories , 2006 .

[7]  J. Ouyang,et al.  Electrical Switching and Bistability in Organic/Polymeric Thin Films and Memory Devices , 2006 .

[8]  Agus Haryono,et al.  Controlled arrangement of nanoparticle arrays in block-copolymer domains. , 2006, Small.

[9]  K. Wei,et al.  Enhanced collective electron transport by CdSe quantum dots confined in the poly(4-vinylpyridine) nanodomains of a poly(styrene-b-4-vinylpyridine) diblock copolymer thin film. , 2006, Angewandte Chemie.

[10]  Xia Xin,et al.  Synthesis of Monodisperse CdS Nanospheres in an Inverse Microemulsion System Formed with a Dendritic Polyether Copolymer , 2006 .

[11]  S. Fonash,et al.  High-performance nonhydrogenated nickel-induced laterally crystallized P-channel poly-Si TFTs , 2005, IEEE Electron Device Letters.

[12]  U. Ganguly,et al.  Asymmetric electric field enhancement in nanocrystal memories , 2005, IEEE Electron Device Letters.

[13]  Philip M. Rice,et al.  Organic Materials and Thin‐Film Structures for Cross‐Point Memory Cells Based on Trapping in Metallic Nanoparticles , 2005 .

[14]  Zoran D. Popovic,et al.  Memory Effect and Negative Differential Resistance by Electrode‐ Induced Two‐Dimensional Single‐ Electron Tunneling in Molecular and Organic Electronic Devices , 2005 .

[15]  I. Hamley.  Block Copolymers in Solution: Fundamentals and Applications: Hamley/Block Copolymers in Solution: Fundamentals and Applications , 2005 .

[16]  Yang Yang,et al.  Polyaniline nanofiber/gold nanoparticle nonvolatile memory. , 2005, Nano letters.

[17]  Charles R. Szmanda,et al.  Programmable polymer thin film and non-volatile memory device , 2004, Nature materials.

[18]  D. Vuillaume,et al.  Metal∕organic∕metal bistable memory devices , 2004, cond-mat/0409758.

[19]  K. Y. Cho,et al.  Novel micelle-forming block copolymer composed of poly (ε-caprolactone) and poly(vinyl pyrrolidone) , 2004 .

[20]  D. Astruc,et al.  Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology. , 2004, Chemical reviews.

[21]  Joachim P. Spatz,et al.  Micellar Nanoreactors—Preparation and Characterization of Hexagonally Ordered Arrays of Metallic Nanodots , 2003 .

[22]  Panagiotis Dimitrakis,et al.  Langmuir−Blodgett Film Deposition of Metallic Nanoparticles and Their Application to Electronic Memory Structures , 2003 .

[23]  U. Simon,et al.  Charge‐Transfer Mechanisms between Gold Clusters , 2003 .

[24]  S. Yoo,et al.  Nanopatterns by free-standing monolayer films of diblock copolymer micelles with in situ core-corona inversion. , 2001, Journal of the American Chemical Society.

[25]  J. Cheon,et al.  Controlled synthesis of multi-armed CdS nanorod architectures using monosurfactant system. , 2001, Journal of the American Chemical Society.

[26]  Kazunori Kataoka,et al.  Self-assembly of poly(ethylene glycol)-based block copolymers for biomedical applications , 2001 .

[27]  M. Antonietti,et al.  Synthesis and characterization of CdS nanoparticles stabilized by double hydrophilic block copolymers. , 2001 .

[28]  Ulrich Simon,et al.  Charge Transport in Nanoparticle Arrangements , 1998 .

[29]  L. E. Horsburgh,et al.  An efficient electron-transporting polymer for light-emitting diodes , 1998 .

[30]  Controlled mineralization and assembly of hydrolysis-based nanoparticles in organic solvents combining polymer micelles and microwave techniques. , 1998, Advanced materials.

[31]  Ullrich Steiner,et al.  Surface-induced structure formation of polymer blends on patterned substrates , 1998, Nature.

[32]  Markus Antonietti,et al.  Amphiphilic Block Copolymers in Structure-Controlled Nanomaterial Hybrids , 1998 .

[33]  A. Mayes,et al.  Observed Substrate Topography-Mediated Lateral Patterning of Diblock Copolymer Films , 1997 .

[34]  Qing‐An Huang.  Field emission from the surface quantum well of silicon , 1996 .

[35]  M. Antonietti,et al.  Synthesis and characterization of noble metal colloids in block copolymer micelles , 1995 .

[36]  K. Khairou,et al.  Theoretical investigations of the stability of degradation products of polystyrene and poly(4-vinylpyridine) , 1994 .

[37]  Mathias Brust,et al.  Synthesis of thiol-derivatised gold nanoparticles in a two-phase liquid-liquid system , 1994 .

[38]  S. Varshney,et al.  Anionic homopolymerization and block copolymerization of 4-vinylpyridine and its investigation by high-temperature size-exclusion chromatography in N-methyl-2-pyrrolidinone , 1993 .

[39]  E. Kay,et al.  Dielectric breakdown of polymer films containing metal clusters , 1988 .

[40]  S. M. Sze,et al.  Physics of semiconductor devices , 1969 .

[41]  J. Simmons,et al.  New conduction and reversible memory phenomena in thin insulating films , 1967, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[42]  J. Hillier,et al.  A study of the nucleation and growth processes in the synthesis of colloidal gold , 1951 .