Rhodamine urea derivatives as fluorescent chemosensors for Hg2+

Jung Hyun Soh, K. M.K. Swamy, Sook Kyung Kim, Suki Kim, Sang Hyeup Lee, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

207 Scopus citations

Abstract

New rhodamine derivatives bearing urea group have been synthesized for the detection of metal ions. Especially, the dimeric system 2 displayed a selective fluorescent enhancement and colorimetric change upon the addition of Hg2+, in which the spirolactam (nonfluorescent) to ring opened amide (fluorescent) process was utilized. The association constant of 2 with Hg2+ was calculated as 3.2 × 105 M-1.

Original languageEnglish
Pages (from-to)5966-5969
Number of pages4
JournalTetrahedron Letters
Volume48
Issue number34
DOIs
StatePublished - 20 Aug 2007

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation Grant (KRF-R14-2003-014-01001-0, KRF-2004-005-C00093) and the Korea Ministry of Environment as “The Eco-technopia 21 project”. K.M.K.S. is thankful to KOFST for Brain Pool Fellowship.

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