title: A highly selective fluorescent chemosensor for Pb2+.
abstract: A new fluorescent sensor based on rhodamine B for Pb2+ was synthesized. The new fluorescent sensor showed an extreme selectivity for Pb2+ over other metal ions examined in acetonitrile. Upon the addition of Pb2+, an overall emission change of 100-fold was observed, and the selectivity was calculated to be 200 times that of Zn2+. The signal transduction occurs via of reversible CHEF (chelation-enhanced fluorescence) with this inherent quenching metal ion.
authors: Department of Chemistry and Division of Nano Sciences, Ewha Womans University, 11-1 Daehyon-Dong, Sodaemun-Ku, Seoul 120-750, Korea.
authors: Ji Young
authors: JY
authors: Kwon
authors: Yun Jung
authors: YJ
authors: Jang
authors: Yoon Ju
authors: YJ
authors: Lee
authors: Kwan Mook
authors: KM
authors: Kim
authors: Mi Sook
authors: MS
authors: Seo
authors: Wonwoo
authors: W
authors: Nam
authors: Juyoung
authors: J
authors: Yoon