Hao Changlong, Gao Yifan, Wu Di, Li Si, Xu Liguang, Wu Xiaoling, Guo Jun, Sun Maozhong, Li Xiu, Xu Chuanlai, Kuang Hua
Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Jiangsu, P. R. China.
Adv Mater. 2019 Sep;31(36):e1903200. doi: 10.1002/adma.201903200. Epub 2019 Jul 17.
Chiral inorganic nanomaterials have recently attracted significant attention because of their many important applications, such as in asymmetric catalysis and chiral sensing. Here, chiral iron disulfide quantum dots (FeS QDs) are synthesized via chirality transfer using l/d-cysteine (Cys) as chiral ligands. The chiral FeS QDs are coassembled with two gelators to produce a cogel (l- or d-[Gel+FeS ]) with a g-factor value of ±0.06. Interestingly, the cogels display intense circularly polarized luminescence. More significantly, the degree of twisting (twist pitch) and the diameter of the cogels can be markedly regulated by illumination with circularly polarized light (CPL) in the ranges of 120-213 and 37-65 nm, respectively, which is caused by the CPL-induced electron transfer. This research opens the way for the design of chiroptical devices with a wide range of functions and applications.
近年来，手性无机纳米材料因其诸多重要应用而备受关注，例如在不对称催化和手性传感领域。在此，通过使用l/d-半胱氨酸（Cys）作为手性配体进行手性转移来合成手性二硫化铁量子点（FeS QDs）。手性FeS QDs与两种凝胶剂共组装以产生g因子值为±0.06的共凝胶（l-或d-[Gel+FeS]）。有趣的是，这些共凝胶表现出强烈的圆偏振发光。更重要的是，共凝胶的扭曲程度（扭曲螺距）和直径可分别通过圆偏振光（CPL）在120 - 213和37 - 65 nm范围内的照射而显著调节，这是由CPL诱导的电子转移引起的。该研究为设计具有广泛功能和应用的手性光学器件开辟了道路。
