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Naphthalimide modified rhodamine derivative: ratiometric and selective fluorescent sensor for Cu2+ based on two
Jun Feng Zhang1, Ying Zhou, Juyoung Yoon
1Department of Chemistry, Korea University, Seoul 130-701, Korea.
Organic Letters
|August 7, 2010
Abstract:
A new rhodamine-based derivative bearing a 1,8-naphthalimide group (1) was synthesized as a dual-mode Cu(2+)-selective sensor via the rhodamine ring-opening approach and ratiometric displacement. A colorimetric and "off-on" signal for Cu(2+) through rhodamine ring opening in 1 and ratiometric fluorescent signal output when Cu(2+) displaces the bound Zn(2+) in the 1-Zn(2+) complex can be observed.
