文献类型：期刊文献

英文题名：New diketopyrrolopyrrole (DPP) derivative as fluorescent probe for Zn2+

作者：Zhang, Guanjun;Bi, Shiming;Song, Longfeng;Wang, Feng;Yu, Jianjun;Wang, Limin[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2013

卷号：99

期号：3

起止页码：779

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20133516669261);WOS:【SCI-EXPANDED(收录号:WOS:000327560200035)】；

基金：This research was financially supported by the National Nature Science Foundation of China (21272069, 20672035), the Fundamental Research Funds for the Central Universities, Baihehua Group and Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.

语种：英文

外文关键词：Diketopyrrolopyrrole (DPP); Turn on; Fluorescent probe; Zn2+; Photoinduced electron transfer (PET); Intramolecular charge transfer (ICT)

摘要：New turn-on fluorescent probe DPPL2, was rationally designed and synthesized based on the skeleton of diketopyrrolopyrrole (DPP), which presented sensitivity, selectivity for Zn2+ over other metal ions except some disturbance with Cd2+. Particularly, results demonstrated fluorescence enhancement and blue shift of DPPL2 upon Zn2+ binding. This phenomenon was a typical photoinduced electron transfer (PET) and intramolecular charge transfer (ICT) process which was attributed to diminishing the electron of the nitrogen lone pair delocalization on the DPP core upon Zn2+ binding. For comparison, DPPL3 (acylation of nitrogen atom of DPPL2) was synthesized and no fluorescence enhancement was observed, which further indicated that lone pair electrons of nitrogen atoms attached to DPP core were ascribed to PET process. H-1 NMR titrations and DFT calculations also proved that PET and ICT process of system. (C) 2013 Elsevier Ltd. All rights reserved.