文献类型：期刊文献

英文题名：A colorimetric and ratiometric fluorescent probe for detection of palladium in the red light region

作者：Xiang, Kaiqiang;Liu, Yunchang;Li, Changjiang;Tian, Baozhu[1];Zhang, Jinlong

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

年份：2015

卷号：5

期号：65

起止页码：52516

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20152500963620);WOS:【SCI-EXPANDED(收录号:WOS:000356462400027)】；

基金：This work has been supported by the National Natural Science Foundation of China (21277046, 21173077, 21377038), the Shanghai Committee of Science and Technology (13NM1401000), the Research Fund of Education of the People's Republic of China (JPPT-125-4-076), the National Basic Research Program of China (973 Program, 2013CB632403).

语种：英文

外文关键词：Emission spectroscopy - Colorimetry - Probes - Signal to noise ratio - Fluorescence - Fluorescence spectroscopy - Biology

摘要：Developing probes for selective and sensitive detection of palladium in living organisms is of great importance. In this work, we synthesized a colorimetric and ratiometric fluorescent probe (Probe 1) with red light emission (lambda(em) = 643 nm) by employing an isophorone based fluorescent dye as the fluorophore and an allylcarbamate group as the response unit. Based on the Pd-0-triggered cleavage reaction, Probe 1 showed high response speed, selectivity, and sensitivity towards palladium species. Upon addition of palladium, the absorption and emission spectra of Probe 1 exhibited obvious red-shifts, which can be easily discriminated by the naked eye. In terms of palladium, the detection limit is as low as 24.2 nM and the signal-to-noise ratio in fluorescence intensity can reach 85-fold. As a red emitting ratiometric sensor, Probe 1 can be potentially used for quantitative detection of palladium in living organisms.