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

Sook Kyung Kim, K. M.K. Swamy, So Young Chung, Ha Na Kim, Min Jung Kim, Yongsuk Jeong, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

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).

Original languageEnglish
Pages (from-to)3286-3289
Number of pages4
JournalTetrahedron Letters
Volume51
Issue number25
DOIs
StatePublished - 23 Jun 2010

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