文献类型：期刊文献

英文题名：Dimethoxy triarylamine-derived terpyridine-zinc complex: a fluorescence light-up sensor for citrate detection based on aggregation-induced emission

作者：Jiang, Tao[1];Lu, Niannian[1];Hang, Yandi[1];Yang, Ji[1];Mei, Ju[1];Wang, Jian[1];Hua, Jianli[1];Tian, He[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2016

卷号：4

期号：42

起止页码：10040

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20164502981619);WOS:【SCI-EXPANDED(收录号:WOS:000387229000017)】；

基金：For financial support of this research, we thank the National Basic Research 973 Program (2013CB733700), NSFC/China (21421004, 21172073, 21372082, 21572062 and 91233207) and the Programme of Introducing Talents of Discipline to Universities (B16017).

语种：英文

外文关键词：Mass spectrometry - Probes - Zinc compounds - Light scattering

摘要：Citrate is a vital metabolite in the Krebs cycle of nearly every aerobic cell. The abnormality in its levels in biological systems is closely associated with some diseases. Facile and efficient approaches for citrate recognition and quantification are thus in great demand. In this paper, a new sensitive and highly selective fluorescence light-up sensor (DTPA-TPY-Zn) for citrate detection has been developed by integrating an AIE motif (DTPA-TPY) with Zn2+. This probe can detect citrate in a fast and simple way by a one-step straightforward assay. It shows significant fluorescence enhancement with a relatively low detection limit (3.5 x 10(-7) M). The fluorescence turn-on mechanism is ascribed to the complexation of DTPA-TPY-Zn with citrate as well as the aggregation-induced emission (AIE) properties of dimethoxy triarylamineterpyridine (DTPA-TPY), which is confirmed using the H-1 NMR and mass spectra (MS), scanning electronic microscopy and dynamic light scattering measurements. In addition, the quantification of citrate in urine makes DTPA-TPY-Zn an effective fluorometric probe for the citrate detection in real samples.