文献类型：期刊文献

英文题名：Synthesis of 1,8-naphthalimide-based fluorescent nano-probes and their application in pH detection

作者：Zhou, Langping[1];Jin, Zechen[1];Fan, Xiaoxiang[1];Yao, Yuhua[1];Chen, Zhaoyang[1];Zhang, Weibing[1];Qian, Junhong[1]

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

年份：2018

卷号：29

期号：10

起止页码：1500

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000449448200013)】；

基金：The authors acknowledge financial support from the National Natural Science Foundation of China (No. 21576085).

语种：英文

外文关键词：Fluorescent probe; Nano-particles; Naphthalimide; pH detection; Realistic samples

摘要：Two kinds of fluorescent nano-probes (pH-A and pH-B) with different diameters for the determination of H+ concentration, based on photo-induced electron transfer mechanism, were synthesized through did reaction. In which 1,8-naphthalimide was employed as the fluorophore and N,N-dimethylethylenediamine as the receptor. The effects of particle size and linker length on the photophysical properties of the probe were studied. The results revealed that the nano-probes were more sensitive toward pH with increasing particle size. The fluorescence intensity at 529 nm (1529) of the nano-probe pH-A of 120 nm exhibited good linear relationship with solution's pH in the range of 6-8. The probe pH-A displayed excellent selectivity and competition toward proton over other possible coexisted ions, and it could be applied to detect pH in realistic samples (river water, urine). (C) 2018 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved