Tetrahedron letters

A new rhodamine-based fluorescent chemosensor for transition metal cations synthesized by one-step facile condensation

X Zhang, Y Shiraishi, T Hirai

文献索引：Zhang, Xuan; Shiraishi, Yasuhiro; Hirai, Takayuki Tetrahedron Letters, 2007 , vol. 48, # 31 p. 5455 - 5459

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被引用次数: 125

摘要

A new rhodamine-based fluorescent chemosensor (1) for transition metal cations was synthesized by one-step facile condensation of rhodamine B and 2-aminopyridine. Without metal cations, 1 is colorless and nonfluorescent, whereas addition of metal cations (Fe3+, Hg2+, Pb2+, and Fe2+) leads to an obvious color change to pink and an appearance of orange fluorescence.