A minimized fluorescent chemosensor array utilizing carboxylate-attached polythiophenes on a chip for metal ions detection  

作　　者：Yui Sasaki Xiaojun Lyu Zhoujie Zhang Tsuyoshi Minami 

机构地区：[1]Institute of Industrial Science,The University of Tokyo,Tokyo 153-8505,Japan

出　　处：《Frontiers of Chemical Science and Engineering》2022年第1期72-80,共9页化学科学与工程前沿（英文版）

基　　金：JSPS KAKENHI(Grant No.JP20K21204);JST CREST(Grant No.JPMJCR2011);JSPS KAKENHI(Grant No.JP18J21190).

摘　　要：Chemosensor arrays have a great potential for on-site applications in real-world scenarios.However,to fabricate on chemosensor array a number of chemosensors are required to obtain various optical patterns for multianalyte detection.Herein,we propose a minimized chemosensor array composed of only two types of carboxylate-functionalized polythiophene derivatives for the detection of eight types of metal ions.Upon recognition of the metal ions,the polythiophenes exhibited changes in their fluorescence intensity and various spectral shifts.Although both chemosensors have the same polymer backbone and recognition moiety,only the difference in the number of methylene groups contributed to the difference in the fluorescence response patterns.Consequently,the metal ions in aqueous media were successfully discriminated qualitatively and quantitatively by the chemosensor microarray on the glass chip.This study offers an approach for achieving a minimized chemosensor array just by changing the alkyl chain lengths without the necessity for many receptors and reporters.

关 键 词：metal ions POLYTHIOPHENE chemosensor array fluorescence pattern recognition 

分 类 号：O65[理学—分析化学]