Li Yiwen, Cheng Jiaji, Li Jiagen, Zhu Xi, He Tingchao, Chen Rui, Tang Zikang
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
The Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau.
Angew Chem Int Ed Engl. 2018 Aug 6;57(32):10236-10240. doi: 10.1002/anie.201806093. Epub 2018 Jul 9.
Understanding the interactions between a semiconducting nanocrystal surface and chiral anchoring molecules could resolve the mechanism of chirality induction in nanoscale and facilitate the rational design of chiral semiconducting materials for chiroptics. Now, chiral molybdenum oxide nanoparticles are presented in which chirality is transferred via a bio-to-nano approach. With facile control of the amount of chiral cysteine molecules under redox treatment, circular dichroism (CD) signals are generated in the plasmon region and metal-ligand charge-transfer band. The obtained enhanced CD signals with tunable lineshapes illustrate the possibility of using chiral molybdenum oxide nanoparticles as potentials for chiral semiconductor nanosensors, optoelectronics, and photocatalysts.
了解半导体纳米晶体表面与手性锚定分子之间的相互作用，有助于解析纳米尺度下的手性诱导机制，并推动用于手性光学的手性半导体材料的合理设计。目前，已制备出手性氧化钼纳米颗粒，其手性通过生物到纳米的方法进行转移。通过在氧化还原处理下轻松控制手性半胱氨酸分子的数量，在等离子体区域和金属 - 配体电荷转移带中产生了圆二色性（CD）信号。所获得的具有可调线形的增强CD信号表明，手性氧化钼纳米颗粒有潜力用作手性半导体纳米传感器、光电器件和光催化剂。
