Morphology-Dependent Chiroptical Switching in Intrinsically Chiral Gold Nanorods Encapsulated with Polyaniline
Source abstract
Abstract
Exploring switching strategies for intrinsically chiral plasmonic nanoparticles is crucial for unlocking their potential in the dynamic manipulation of light polarization states. Conjugated polymers, such as polyaniline (PANI), represent highly promising material candidates for this pursuit, owing to their combination of intrinsic structural flexibility, tunable optical characteristics, and multistimuli responsiveness. Herein, we demonstrate chiroptical switching on PANI-encapsulated chiral gold nanorods (cAuNRs) by controlling proton doping of PANI, and reveal that the morphology of PANI within the nanogaps of cAuNRs results in abnormal spectral shifting, which is in contrast with those in previous studies. Moreover, we elucidate that the near-infrared absorption of doped PANI reduces the chiroptical response intensity, leading to splitting in the circular dichroism spectra. Our study provides valuable insights into the interaction between conjugated polymers and chiral plasmonic nanoparticles, supporting potential applications in nanoscale chiroptical switches for on-chip devices.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Supramolecular Self-Assembly in Materials · Liquid Crystal Research Advancements
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Guangdong Basic Research Center of Excellence for Aggregate Science, School of Science and Engineering
The Chinese University of Hong Kong
College of Chemical Engineering
Huaqiao University
Faculty of Materials Science
MSU-BIT University
Solid State Physics & Material Research Laboratory, School of Physics and Materials Science
Guangzhou University
Funding
Guangdong Provincial Department of Science and Technology · Guangdong Provincial Introduction of Innovative Research and Development Team · China Postdoctoral Science Foundation · Natural Science Foundation of Fujian Province · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Guangdong Basic Research Center of Excellence for Aggregate Science · Program for Innovative Research Team in Science and Technology in Fujian Province University
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