文献类型：期刊文献

英文题名：Hysteresis Nanoarchitectonics with Chiral Gel Fibers and Achiral Gold Nanospheres for Reversible Chiral Inversion

作者：Xu, Hui[1,2];Zhang, Qi[1,2];Gan, Jia-An[1,2];Wang, Zhuo[1,2];Chen, Meng[1,2];Shan, Yahan[1,2];Chen, Shaoyu[1,2];Tong, Fei[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem,Feringa Nobel Prize Scientist Join, Key Lab Adv Mat,Frontiers Sci Ctr Materiobil & Dy, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem,Feringa Nobel Prize Scientist Join, Frontiers Sci Ctr Materiobil & Dynam Chem,Joint I, Shanghai 200237, Peoples R China

年份：2022

卷号：17

期号：6

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20220511563059);WOS:【SCI-EXPANDED(收录号:WOS:000748349900001)】；

基金：This research is supported by the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant SN-ZJU-SIAS-006), the National Natural Science Foundation of China (grants 22025503, 21790361, 21871084, 21672060, and 22105071), Shanghai Municipal Science and Technology Major Project (grant 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Program of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), the Shanghai Science and Technology Committee (grant 17520750100). We thank the NSFC/China for the financial support. F. T. also thanks to the Shanghai Sailing Program (21YF1409200) and the Fundamental Research Funds for the Central Universities. We thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the characterization.

语种：英文

外文关键词：chiral inversion; gold nanospheres; gold nanorods; reversible modulation; supramolecular gels

摘要：Intelligent control over the handedness of circular dichroism (CD) is of special significance in self-organized biological and artificial systems. Herein, we report a chiral organic molecule (R1) containing a disulfide unit self-assembles into M-type helical fibers gels, which undergoes chirality inversion by incorporating gold nanospheres due to the formation of Au-S bonds between R1 and gold nanospheres. Upon heating at 80 degrees C, the aggregation of gold nanospheres results in a disappearance of the Au-S bond, allowing the reversible switching back to M-type helical fibers. The original chirality of M-type fibers could also be retained by adding anisotropic gold nanorods. A series of characterization methods, involving CD, Raman, Infrared spectroscopy, electric microscopy, and small-angle X-ray scattering (SAXS) measurements were used to investigate the mechanism of chiral evolutions. Our results provide a facile way of fabricating hysteresis nanoarchitectonics to achieve dynamic supramolecular chirality using inorganic metallic nanoparticles.