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

作者：Zhang Xuan; Shiraishi Yasuhiro^*; Hirai Takayuki

来源：Tetrahedron Letters, 2007, 48(31): 5455-5459.

DOI：10.1016/j.tetlet.2007.05.171

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, I 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.

• 出版日期2007-7-30