@article{Zheng2022, 
author = {Guangchao Zheng and Sulin Jiao and Wei Zhang and Shenli Wang and Qinghua Zhang and Lin Gu and Weixiang Ye and Junjun Li and Xiaochen Ren and Zhicheng Zhang and Kwok-yin Wong},
title = {Fine-tune chiroptical activity in discrete chiral Au nanorods},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {7},
pages = {6574-6581},
keywords = {surface plasmon resonance, optical activity, chiral Au nanorods (c-Au NRs), chirality transfer},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4212-y},
doi = {10.1007/s12274-022-4212-y},
abstract = {Accurate researches on the surface plasmon resonance (SPR)-based applications of chiral plasmonic metal nanoparticles (NPs) still remain a great challenge. Herein, a series of chiral plasmonic metal NPs, e.g., chiral Au nanorods (c-Au NRs), c-Au@Ag core–shell, and c-Au@TiO2 core–shell NRs, with different chiroptical activities have been produced. Plasmonic circular dichroism (PCD) bands of c-Au NRs can be precisely tailored by tuning the longitudinal SPR (LSPR) and amount of Au NRs as seeds. Besides, a shift of PCD bands within ultraviolet–visible–near infrared ray (UV–vis–NIR) region can also be achieved through the functionalization of a shell of another metal or semiconductor. Interestingly, chirality transfer from c-Au core to Ag shell leads to new PCD bands at the near-UV region. The tuning of PCD bands and chirality transfer are confirmed by our developed theoretical model. Developing chiral Au NRs-based chiral plasmonic nanomaterials with tunable chiroptical activities will be helpful to understand the structure-direct PCD and to extend circularly polarized-based applications.}
}