TY  - JOUR
AU  - Zheng, Guangchao
AU  - Jiao, Sulin
AU  - Zhang, Wei
AU  - Wang, Shenli
AU  - Zhang, Qinghua
AU  - Gu, Lin
AU  - Ye, Weixiang
AU  - Li, Junjun
AU  - Ren, Xiaochen
AU  - Zhang, Zhicheng
AU  - Wong, Kwok-yin
PY  - 2022
TI  - Fine-tune chiroptical activity in discrete chiral Au nanorods
JO  - Nano Research
SN  - 1998-0124
SP  - 6574
EP  - 6581
VL  - 15
IS  - 7
AB  - 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.
UR  - https://doi.org/10.1007/s12274-022-4212-y
DO  - 10.1007/s12274-022-4212-y