New fluorescent and colorimetric chemosensors based on the rhodamine and boronic acid groups for the detection of Hg2

Novel rhodamine B (RB) derivatives bearing mono and bis-boronic acid groups were investigated as Hg2+ selective fluorescent and colorimetric sensors. These derivatives are first examples of reversible fluorescent chemosensors for Hg2+ which utilized boronic acid groups as binding sites. Two new RB-b...

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Published inTetrahedron letters Vol. 51; no. 25; pp. 3286 - 3289
Main Authors Kim, Sook Kyung, Swamy, K. M. K., Chung, So-Young, Kim, Ha Na, Kim, Min Jung, Jeong, Yongsuk, Yoon, Juyoung
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier 01.06.2010
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
RECOGNITION
SELECTIVE FLUORESCENT
SPIROLACTAM
DERIVATIVE BEARING
HG(II)
SENSOR
RATIOMETRIC FLUORESCENT
PROBE
BINDING
CHEMODOSIMETER
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Summary:Novel rhodamine B (RB) derivatives bearing mono and bis-boronic acid groups were investigated as Hg2+ selective fluorescent and colorimetric sensors. These derivatives are first examples of reversible fluorescent chemosensors for Hg2+ which utilized boronic acid groups as binding sites. Two new RB-boronic acid derivatives displayed selective 'Off-On'-type fluorescent enhancements and distinct color changes with Hg2+. Selective fluorescent enhancement of two rhodamine derivatives was attributed to ring opening from the spirolactam (nonfluorescent) to ring-opened amide (fluorescent). (C) 2010 Elsevier Ltd. All rights reserved.
ISSN:0040-4039
DOI:10.1016/j.tetlet.2010.04.067