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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 7
BKCSDE 33(7)
July 20, 2012 

Rhodamine Based Fluorescent Chemosensors for Hg2+ and its Biological Application
Ji Young Choi, Wantae Kim, Juyoung Yoon*
Fluorescent sensor, Colorimetric sensor, Rhodamine, Hg(II) sensor, Mercury ion sensor
Two new chemosensors, rhodamine 6G derivative bearing hydroxyethyl group (1) and rhodamine base derivative bearing 15-crown-5 group (2) were synthesized and their sensing behaviors toward various metal ions were investigated by UV/Vis and fluorescence spectroscopies. Addition of Hg2+ ion to a CH3CN solution of 1 and 2 gave visual color changes as well as fluorescent OFF-ON observations. Selectivity and sensitivity of 1 towards Hg2+ are excellent enough to detect micromolar level of Hg2+ ion, even in equeous media and biological sample (HeLa cell).
2359 - 2364
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