Document Detail

A highly selective colorimetric chemodosimeter for fast and quantitative detection of hydrogen sulfide.
MedLine Citation:
PMID:  23057070     Owner:  NLM     Status:  Publisher    
Based on the fact that hydrogen sulfide (H(2)S) possesses the smallest steric hindrance among thiols and the SH(-) group adds faster to an electron-poor C[double bond, length as m-dash]C double bond, we designed and synthesized a tricyanoethylene-derived colorimetric chemodosimeter for the fast and highly selective assay of H(2)S. Chemodosimeter exhibited excellent water-solubility due to the introduction of two hydrophilic hydroxyl groups. Upon the addition of Na(2)S, chemodosimeter showed a fast (complete within 400 s) and robust decrease of the absorption intensity (>97%), accompanied by a color change from red to colorless. Additionally, a linear relationship between absorption intensity and the added Na(2)S concentrations (0-130 μM) was observed in aqueous buffer solution (pH 7.4, 20 mM PBS). Importantly, the proposed paradigm in this paper, adoption of the tricyanoethylene derivative as a recognition receptor to distinguish H(2)S from other thiols and analytes, provides a promising methodology for the design of colorimetric and fluorescent chemodosimeters for fast determination of H(2)S.
Yunzhou Zhao; Xiaohe Zhu; He Kan; Weizhang Wang; Baocun Zhu; Bin Du; Xiaoling Zhang
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-10
Journal Detail:
Title:  The Analyst     Volume:  -     ISSN:  1364-5528     ISO Abbreviation:  Analyst     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372652     Medline TA:  Analyst     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
School of Resources and Environment, University of Jinan, Jinan 250022, China.
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