申请人:Hong Jong-In
公开号:US20050119497A1
公开(公告)日:2005-06-02
A novel coordination complex formed by dinuclear metal complexation is provided. The complex is a dinuclear metal complex of a compound, wherein the compound comprises a conjugation ring system substituted with: a) an electron donating group selected from —OH, —SH and —NH
2
; b) an indicating group selected from a chromogenic group, a fluorescent group and an electrochemical group; and c) two binding auxiliary groups, in combination with the electron donating group each of which being coordinated with the metal to provide an anion bonding site, wherein as the complex binds to a anion, the coordination of the electron donating group with the metal is weakened and electron donation of the electron donating group to the conjugation ring system is reinforced such that the reinforced electron donation by the electron donating group is transferred through the conjugation ring system to the indicating group to produce an indicating signal concomitant with the change of its electronic density. The coordination complex shows high sensitivity and high selectivity for pyrophosphate over other anions in an aqueous solvent over a wide pH range. Therefore, the complex is useful for pyrophosphate assay as a pyrophosphate sensor.
提供了一种由双核金属络合形成的新型配位化合物。该配合物是一种化合物的双核金属络合物,其中该化合物包括一个带有以下取代基的共轭环系统:a) 从—OH、—SH和—NH2中选择的电子给体基团;b) 从显色基团、荧光基团和电化学基团中选择的指示基团;以及c) 两个结合辅助基团,与电子给体基团结合在一起,每个结合辅助基团与金属配位以提供一个阴离子结合位点,当该配合物与阴离子结合时,电子给体基团与金属的配位被削弱,电子给体基团向共轭环系统的电子给体作用被加强,从而通过共轭环系统向指示基团传递加强的电子给体作用,产生与其电子密度变化相伴随的指示信号。该配位化合物在广泛的pH范围内对焦磷酸盐的灵敏度和选择性很高,优于其他阴离子在水溶剂中。因此,该复合物作为焦磷酸盐传感器对焦磷酸盐的检测是有用的。