标题:New fluorescent chemosensor based on quinoline and coumarine for Cu~(2+)
作者:Zhen-Ju Jiang;Hong-Shui Lv;Jian Zhu
作者机构:[Jiang, Z.-J] School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China;[ Lv, H.-S] School of Chemistry and Chemical Engi 更多
通讯作者:Zhao, BX
通讯作者地址:[Zhao, BX]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
来源:Synthetic Metals
出版年:2012
卷:162
期:23
页码:2112-2116
DOI:10.1016/j.synthmet.2012.09.013
关键词:Fluorescent chemosensor;Copper ion;Coumarin;8-Hydroxyquinoline
摘要:A new fluorescent chemosensor based a coumarin fluorophore and an 8-hydroxyquinoline ionophore was synthesized and characterized by ~1H NMR, IR and ESI-HRMS. Its selectivity toward metal ions in ace-tonitrile (1% water, v/v) was investigated by UV absorption and fluorescence spectroscopy. The results showed that this chemosensor exhibited good selectivity toward Cu~(2+) over other metal ions by enhancement of fluorescence intensity more than 13-fold, and the fluorescent color change could be observed by naked eyes under the light of 365 nm. The absorption spectra of the sensor (L) toward the concentration of Cu~(2+) indicated the formation of L-Cu~(2+) complex, and the complex was 1:1 ratio according to Job plot experiment. Both of photo-induced electron transfer (PET) and intramolecular charge transfer (ICT) mechanisms were considered to be operational for fluorescence enhancement and spectral shift. The detection limit of Cu~(2+)was determined to be 1.16 μM, a satisfying level to detect Cu~(2+) in micromolar scale.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:15
Scopus被引频次:16
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868591408&doi=10.1016%2fj.synthmet.2012.09.013&partnerID=40&md5=07e3dbcc20e71d3859ca71e195270cbf
TOP