Organic radical-induced Cu2+ selective sensing based on thiazolothiazole derivatives
- 주제(키워드) Cu2+ sensor , Organic radical , Colorimetric sensor , Fluorescent sensor , Thiazolothiazole
- 등재 SCIE, SCOPUS
- 발행기관 ELSEVIER SCIENCE SA
- 발행년도 2014
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000086936
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.snb.2013.11.027
초록/요약
As a new approach to detect Cu-2+, colorimetric detection of Cu2+ via organo radical formation of thiazolothiazole is reported. Upon the addition of Cu2+, thiazolothiazole derivatives 1 and 2 form relatively stable organo radicals, resulting in a distinct colorimetric change from greenish yellow to blue. Among the various metal ions, only Cu2+ showed a new peak appearance at 610 nm. In addition, a selective fluorescence quenching was also observed with Cu2+. To understand the origin of the Cu2+ selectivity of 1 and 2, series of electrochemical data are reported. Finally, EPR (electron paramagnetic resonance) data clearly support the formation of this unique organic radical formation. (C) 2013 Elsevier B.V. All rights reserved.
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