文献类型：期刊文献

英文题名：Alkyl-triphenylamine end-capped triazines with AIE and large two-photon absorption cross-sections for bioimaging

作者：Gao, Yuting[1,2];Qu, Yi[3,4];Jiang, Tao[1,2];Zhang, Hao[1,2];He, Nannan[1,2];Li, Bo[5];Wu, Junchen[1,2];Hua, Jianli[1,2]

机构：[1]E China Univ Sci & Technol, Inst Fine Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China;[4]Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China;[5]E China Normal Univ, Minist Educ, Key Lab Polar Mat & Devices, Shanghai 200241, Peoples R China

年份：2014

卷号：2

期号：31

起止页码：6353

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20143017989137);WOS:【SCI-EXPANDED(收录号:WOS:000340353700014)】；

基金：This work was supported by NSFC/China (21372082, 2116110444, 21172073 and 91233207) and the National Basic Research 973 Program (2013CB733700 and 2013CB834701). We are grateful to Wen Lv from Nanjing University of Posts and Telecommunications for significant help.

语种：英文

外文关键词：Fluorophores - Lanthanum compounds - Chlorine compounds - Photons - Two photon processes

摘要：In the present study, three new luminogens ATT-(1-3) based on 1,3,5-triazine and end-capped with multi-branched triphenylamine-containing alkyl chains have been synthesized and characterized. All the three dyes are nonemissive in solution but have a strong red fluorescent emission in the aggregate state. The two-photon absorption (2PA) cross sections measured by the open aperture Z-scan technique are determined to be as large as 2756, 4750 and 10 003 GM for ATT-1, ATT-2 and ATT-3 in chloroform, respectively, showing a dramatic enhancement with an increasing number of donor branches. The relationship between their structures and properties on one- and two-photon absorption and aggregation-induced emission (AIE) is discussed, which can serve as a guideline for the development of a series of solid materials with larger two-photon cross sections and high fluorescence quantum yield. In addition, one- and two-photon fluorescence (2PF) microscopy images of HeLa cells incubated with these three dyes were obtained to demonstrate the potential applications of these fluorophores in biosensing and bioimaging.