Issue 4, 2013
From the journal:

Analyst

Near-infrared fluorescent detection of glutathionevia reaction-promoted assembly of squaraine-analyte adducts†

Yongqian Xu,*ab   Benhao Li,a   Pan Han,a   Shiguo Sun*a  and  Yi Pang*b  

* Corresponding authors

a College of Science, Northwest A&F University, Yangling, Shaanxi, P.R. China
E-mail: xuyq@nwsuaf.edu.cn, sunsg@nwsuaf.edu.cn

b Department of Chemistry & Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH, USA
E-mail: yp5@uakron.edu

Abstract

The first “off-on” dual-output fluorescent assay based on reaction-promoted self-assembly approach for glutathione recognition in near infrared region over other relative thiols including cysteine and homocysteine was constructed with high selectivity and large Stocks shift (about 220 nm). The fluorescence enhancement is attributed to the intermolecular interaction, which manipulates the squaraine's aggregates and results in FRET for NIR emission. The sensitivity of the sensing ensemble was further improved in buffer solution containing cationic surfactant.

Graphical abstract: Near-infrared fluorescent detection of glutathione via reaction-promoted assembly of squaraine-analyte adducts

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Article information

DOI
https://doi.org/10.1039/C2AN36475A
Article type
Communication
Submitted
12 Oct 2012
Accepted
02 Jan 2013
First published
04 Jan 2013

Analyst, 2013,138, 1004-1007

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Near-infrared fluorescent detection of glutathione via reaction-promoted assembly of squaraine-analyte adducts

Y. Xu, B. Li, P. Han, S. Sun and Y. Pang, Analyst, 2013, 138, 1004 DOI: 10.1039/C2AN36475A

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