Anion Binding and Sensing Properties of Bis(3-indolyl)methene Derivatives Based on Proton Transfer Process

Title: Anion Binding and Sensing Properties of Bis(3-indolyl)methene Derivatives Based on Proton Transfer Process

Volume: 8 Issue: 1

Author(s): Litao Wanga, Xiaoming He, Yong Guo, Jian Xu and Shijun Shao

Affiliation:

Keywords: Anion recognition, bis(3-indolyl)methene, colorimetric chemosensor, hydrogen bond, proton transfer, tunable selectivity and sensitivity

Abstract: A series of the bis(3-indolyl)methene derivatives were synthesized and their anion binding and sensing properties in CH3CN or mixed CH3CN/H2O solution have been investigated in detail by UV-vis spectroscopic techniques. The deprotonation/protonation of the bis(3-indolyl)methene receptor is responsible for the dramatic color and spectral changes. The introduction of the electron-donating or withdrawing group into different moiety of the bis(3- indolyl)methene skeleton, which tunes the acidity of the H-bond donor moiety or the basicity of the H-bond acceptor moiety, has a positive effect on the selectivity and sensitivity of such “proton-transfer” chemosensors for anions.

Cite this article as:

Wanga Litao, He Xiaoming, Guo Yong, Xu Jian and Shao Shijun, Anion Binding and Sensing Properties of Bis(3-indolyl)methene Derivatives Based on Proton Transfer Process, Letters in Organic Chemistry 2011; 8 (1) . https://dx.doi.org/10.2174/157017811794557796