Lee Min Hee, Wu Jia-Sheng, Lee Jeong Won, Jung Jong Hwa, Kim Jong Seung
Department of Chemistry, Institute of Nanosensor & Biotechnology, Dankook University, Seoul 140-714, Korea.
Org Lett. 2007 Jun 21;9(13):2501-4. doi: 10.1021/ol0708931. Epub 2007 May 26.
A novel tren-based tripodal chemosensor 1 bearing a rhodamine and two tosyl groups was synthesized and its sensing behavior toward metal ions was investigated by UV/vis and fluorescence spectroscopies. Addition of a Hg2+ ion to a CH3CN solution of 1 gave a visual color change as well as significantly enhanced fluorescence, while other ions including Pb2+, Zn2+, Cu2+, Ca2+, Ba2+, Cd2+, Co2+, Mg2+, Ag+, Cs+, Li+, and Na+ induced no or much smaller color/spectral changes, which constituted a Hg2+-selective fluorescent chemosensor (OFF-ON).
合成了一种新型的基于三乙撑四胺的三脚架式化学传感器1，其带有一个罗丹明和两个甲苯磺酰基，并通过紫外/可见光谱和荧光光谱研究了其对金属离子的传感行为。向1的乙腈溶液中加入Hg2+离子会引起视觉颜色变化以及显著增强的荧光，而包括Pb2+、Zn2+、Cu2+、Ca2+、Ba2+、Cd2+、Co2+、Mg2+、Ag+、Cs+、Li+和Na+在内的其他离子则不会引起或只会引起非常小的颜色/光谱变化，这构成了一种Hg2+选择性荧光化学传感器（关闭-开启）。
