Photocontrollable Chiral Switching and Selection in Self-Assembled Plasmonic Nanostructure

Wenjing Zhao, Weixuan Zhang, Rong Yao Wang*, Yinglu Ji, Xiaochun Wu, Xiangdong Zhang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

28 引用 (Scopus)

摘要

Reversible photocontrol of dynamic chirality in self-assembly systems is of great importance in exploitations of artificial nanomachines for scientific and industrious applications. Here, a new strategy is proposed for achieving optically chiral controls based on photoswitchable plasmonic nanostructures. Chiral plasmonic nanoassemblies that are responsive to optomechanical perturbations exerted by circular polarized light (CPL) in the visible (vis)/near infrared (NIR) region are designed. The reversible photoswitching between opposite chiral states is verified by circular dichroism (CD) spectral signals. Theoretical simulations reveal the key role of optical torques in driving this chiral switching. By regulating light polarization or tuning light frequency to excite different plasmonic modes of the nanostructures, such an optomechanically driven chiral switching can enable a directed mirror-symmetry breaking and selective chiral amplification in nanoassemblies. This plasmon-based photoswitching nanosystem can operate at the optical transparent window, showing particular advantages over most of the molecular photoswitches for applications in living systems.

源语言英语
文章编号1900587
期刊Advanced Functional Materials
29
20
DOI
出版状态已出版 - 16 5月 2019

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