Plasmonic Double-Walled Nanoframes with Face-to-Face Nanogaps for Strong SERS Activity.

A synthesis method for plasmonic double-walled nanoframes was developed, where single-walled truncated octahedral nanoframes with (111) open facets and (100) solid flat planes are nested in a core-shell manner. By applying multiple chemical toolkits to Au cuboctahedrons as a starting template, Au double-walled nanoframes with controllable face-to-face nanogaps were successfully synthesized in high homogeneity in size and shape. Importantly, when the gap distance between inner and outer flat walled frames became closer, augmentation of electromagnetic near-field focusing was achieved, leading to generation of hot-zones, which was verified by surface-enhanced Raman spectroscopy. The unique optical property of Au double-walled nanoframes with high structural intricacy was carefully investigated and the SERS substrates comprising Au double-walled nanoframes with the narrowest nanogaps exhibited much improved near-field enhancement toward strongly and/or weakly adsorbing analytes, allowing for gas phase detection in chemical warfare agents, which is a huge challenge in early warning systems.

[1]  I. Jung,et al.  Multiple Stepwise Synthetic Pathways toward Complex Plasmonic 2D and 3D Nanoframes for Generation of Electromagnetic Hot Zones in a Single Entity. , 2023, Accounts of chemical research.

[2]  I. Jung,et al.  Synthesis of Pt Double-Walled Nanoframes with Well-Defined and Controllable Facets. , 2022, ACS nano.

[3]  Jian-feng Li,et al.  Quantitatively Revealing the Anomalous Enhancement in Shell-Isolated Nanoparticle-Enhanced Raman Spectroscopy Using Single-Nanoparticle Spectroscopy. , 2022, ACS nano.

[4]  C. Mirkin,et al.  Open-channel metal particle superlattices , 2022, Nature.

[5]  Sungho V. Park,et al.  Three-dimensional nanoframes with dual rims as nanoprobes for biosensing , 2022, Nature Communications.

[6]  Sungho V. Park,et al.  Nesting of multiple polyhedral plasmonic nanoframes into a single entity , 2022, Nature Communications.

[7]  Sungho V. Park,et al.  All-Hot-Spot Bulk Surface-Enhanced Raman Scattering (SERS) Substrates: Attomolar Detection of Adsorbates with Designer Plasmonic Nanoparticles. , 2022, Journal of the American Chemical Society.

[8]  So-Jung Park,et al.  Synthesis, Assembly, Optical Properties, and Sensing Applications of Plasmonic Gap Nanostructures (Adv. Mater. 46/2021) , 2021, Advanced Materials.

[9]  Ning-Ning Zhang,et al.  Tuning the Chiral Morphology of Gold Nanoparticles with Oligomeric Gold–Glutathione Complexes , 2021 .

[10]  C. Mirkin,et al.  Corner-, edge-, and facet-controlled growth of nanocrystals , 2021, Science Advances.

[11]  Wonseok Yang,et al.  Recent Advances in the Synthesis of Intra‐Nanogap Au Plasmonic Nanostructures for Bioanalytical Applications , 2020, Advanced materials.

[12]  Yadong Yin,et al.  Encapsulated Metal Nanoparticles for Catalysis. , 2020, Chemical reviews.

[13]  Sungho V. Park,et al.  Quantitative Surface-Enhanced Raman Spectroscopy Analysis through 3D Superlattice Arrays of Au Nanoframes with Attomolar Detection. , 2019, Analytical chemistry.

[14]  Sangwoon Yoon,et al.  Effect of Nanogap Morphology on Plasmon Coupling. , 2019, ACS nano.

[15]  Jeremy J. Baumberg,et al.  Present and Future of Surface-Enhanced Raman Scattering , 2019, ACS nano.

[16]  J. Nam,et al.  Precisely Shaped, Uniformly Formed Gold Nanocubes with Ultrahigh Reproducibility in Single-Particle Scattering and Surface-Enhanced Raman Scattering. , 2018, Nano letters.

[17]  Jian-Feng Li,et al.  Core-Shell Nanoparticle-Enhanced Raman Spectroscopy. , 2017, Chemical reviews.

[18]  I. Markov.  Crystal Growth for Beginners:Fundamentals of Nucleation, Crystal Growth and Epitaxy , 2016 .

[19]  J. Nam,et al.  Plasmonic Nanogap-Enhanced Raman Scattering with Nanoparticles. , 2016, Accounts of chemical research.

[20]  Soonchang Hong,et al.  Au Nanodisk-Core Multishell Nanoparticles: Synthetic Method for Controlling Number of Shells and Intershell Distance , 2014 .

[21]  Naomi J. Halas,et al.  Fluorescence Enhancement of Molecules Inside a Gold Nanomatryoshka , 2014, Nano letters.

[22]  Sunghoon Kwon,et al.  Highly uniform and reproducible surface-enhanced Raman scattering from DNA-tailorable nanoparticles with 1-nm interior gap. , 2011, Nature nanotechnology.

[23]  J. Hafner,et al.  Localized surface plasmon resonance sensors. , 2011, Chemical reviews.

[24]  M. El-Sayed,et al.  Gold nanoframes: very high surface plasmon fields and excellent near-infrared sensors. , 2010, Journal of the American Chemical Society.

[25]  Tuan Vo-Dinh,et al.  Gold Nanostars For Surface-Enhanced Raman Scattering: Synthesis, Characterization and Optimization. , 2008, The journal of physical chemistry. C, Nanomaterials and interfaces.

[26]  Xiaohua Huang,et al.  Noble metals on the nanoscale: optical and photothermal properties and some applications in imaging, sensing, biology, and medicine. , 2008, Accounts of chemical research.

[27]  Yung Doug Suh,et al.  Nanogap-engineerable Raman-active nanodumbbells for single-molecule detection. , 2010, Nature materials.