期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 45, 页码 18064-18074出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b07143
关键词
-
资金
- Ministerio de Economia y Competitividad (MINECO FEDER, Spain) [CTQ2017-85454-C2-1-P, UNGR15-CE-3478]
- Ministerio de Ciencia, Innovation y Universidades (MICIU, Spain) [PGC2018-101181-B-I00]
- European Research Council (ERC) under the European Union [ERC-2015-STG-677023]
- MINECO [RyC-2013-12943]
- Universidad de Granada (UGR) [PP2016-VS01, PP2017-PRI-I-02]
A rotaxane-based molecular shuttle has been synthesized in which the switching of the position of a fluorescent macrocycle on the thread turns on or off the circularly polarized luminescence (CPL) of the system while maintaining similar fluorescence profiles and quantum yields in both states. The chiroptical activity relies on the chiral information transfer from an ammonium salt incorporating D- or L-phenylalanine residues as chiral stereogenic covalent units to an otherwise achiral crown ether macrocycle bearing a luminescent 2,2'-bipyrene unit when they interact through hydrogen bonding. Each enantiomeric thread induces CPL responses of opposite signs on the macrocycle. Upon addition of base, the switching of the position of the macrocycle to a triazolium group disables the chiral information transfer to the macrocycle, switching off the CPL response. The in situ switching upon several acid/base cycles is also demonstrated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据