标题：Synthesis and two-photon up-conversion sensing property of pyridinylbenzothiadiazole-based chromophores
作者：Ye, Changqing; Sun, Bin; Wang, Xiaomei; Yang, Jiawei; Ding, Ping; Zhu, Saijiang; He, Qingguo; Liang, Zuoqin; Tao, Xutang
作者机构：[Ye, Changqing; Sun, Bin; Wang, Xiaomei; Yang, Jiawei; Ding, Ping; Zhu, Saijiang; Liang, Zuoqin] Suzhou Univ Sci & Technol, Jiangsu Key Lab Environm F 更多
通讯作者地址：[Wang, XM]Suzhou Univ Sci & Technol, Jiangsu Key Lab Environm Funct Mat, Coll Chem Biol & Mat Engn, Suzhou 215009, Peoples R China.
来源：DYES AND PIGMENTS
关键词：Two-photon up-conversion; Fluorescent sensor; Sensitivity; Red emitting;; Pyridinylbenzothiadiazole; Triphenylamine
摘要：New two-photon up-conversion fluorescence (TPF) sensors, containing triphenylamine or carbazole as donor (D) and flanked pyridinylbenzothiadiazole as acceptor (A) to form D-pi-A(n) ((n-1, 2 or 3)) architecture, were synthesized and characterized. The investigation correlated molecular structure (acceptor number) with linear absorption, one-photon fluorescence (OPF) and two-photon fluorescence (TPF) detecting Cu2+, Ni2+, Hg2+ and Ag+ was carried out. Sensors containing more acceptor groups were found to exhibit greater sensitivity to both absorption and fluorescence detection. A comparison between OPF and TPF responses to the given metal ion (Cu2+) showed that the sensitivity of TPF quenching is larger than that of OPF quenching. This strongly supports the idea that pyridinylbenzothiadiazole-based chromophores with more acceptor groups possess potential application as two-photon up-conversion sensors. (C) 2013 Elsevier Ltd. All rights reserved.