Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea.
Org Lett. 2010 Feb 19;12(4):764-7. doi: 10.1021/ol902852g.
A Co(II)-salen based fluorescent sensor (1.Co) that can selectively recognize cyanide anions in 1:2 binding stoichiometry over other anions has been developed. 1.Co displayed fluorescence enhancement upon the addition of cyanide owing to the interruption of photoinduced electron transfer from the coumarin fluorophore to the cobalt(II) ion. A general regression method was developed to calculate the binding constants in the 1:2 binding system, through which the 1:2 binding between 1.Co and cyanide anions was estimated to be in the range of micromolar dissociation constants.
一种基于 Co(II)-salen 的荧光传感器（1.Co）已被开发出来，它可以选择性地识别氰根阴离子，其结合比为 1:2，超过了其他阴离子。由于香豆素荧光团到钴(II)离子的光诱导电子转移被中断，1.Co 在加入氰根阴离子后显示出荧光增强。通过发展一种通用的回归方法来计算 1:2 结合体系中的结合常数，通过该方法估算 1.Co 与氰根阴离子之间的 1:2 结合属于微摩尔离解常数的范围。
