Decoration of Terpyridine with Electron-Rich Unit TH DTAP: an Efficient Way to Explore Fluorescence Sensors for Recognizing Metal Ions

作     者：Taoshan Xu Dongxu Li Chaoxian Yan Yuewei Wu Cheng-Shan Yuan Xiangfeng Shao 

作者机构：State Key Laboratory of Applied Organic ChemistryLanzhou UniversityLanzhouGansu 730000Chino 

出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)

年 卷 期：2019年第37卷第9期

页      面：909-914页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：The authors ack no wledge the grant from the Nati onal Natural Science Foundation of China (Nos. 21871119, 21522203) the National Key R&D Program of China (No. 2017YFA0204903) 

主　　题：intramolecular charge-transfer (ICT) introduced onto terpyridine (TPy) 2,3,4,6-tetrahydro-1,6-dithia-3a-azaphenalene (THDTAP) 

摘      要：The electron-donating unit 2,3,4,6-tetrahydro-1,6-dithia-3a-azaphenalene (THDTAP) was introduced onto terpyridine (TPy) to give a donor-acceptor (D-A) type TPy-ligand (compound 2).Upon selective oxidation of two sulfur atoms on the THDTAP moiety of 2,the ligands 3-6 were *** electronic structures of 2-6 were evaluated by theoretical,electrochemical,and spectroscopic *** oxidation on the sulfur atoms brings significant influence on the electron-donating ability of THDTAP moiety,subsequently,leads to fine modulations on intramolecular charge-transfer (ICT) of 2-6 and the electronically excited states of the complexes of 2-6 with metal *** on the optical response of 2-6 toward metal ions,the step-by-step recognition of Zn2+,Cd2+,and Ag+ ions is set up by employing 2 and 3 as combined fluorescence sensors.