Article ID Journal Published Year Pages File Type
5276344 Tetrahedron Letters 2007 4 Pages PDF
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.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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