Synthes is of a 1,3-Bis(indoaniline)-derived Calix[4]arene Having an Optical Sensory Function for Calcium Ion

[出版社版]Due to my interest in depelopment of advanced functional molecules, the incorporation of biological function (such as receptor, transporter catalyst, etc.) into materials for electro-optical application would be of great value because the cooperation of those functions could produce new types of supramolecular devices. Recently. I have designed chromogenic. receptor which is defined a dye molecule being capable of binding a guest in its antenna segment. The binding of the guest should induce a change in the physical property of the optical sensory site which can be monitered. Indeed, the title compound shows a selective Ca2+-induced pronounced color change(wavelength change>100 nm) with an association constant of the order of 106 in 99% EtOH; we report the results of the study