Fluorimetric and prototropic studies on the inclusion complexation of 3,3'-diaminodiphenylsulphone with beta-cyclodextrin and its unusual behavior

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Muthu Vijayan EnochM Swaminathan

Abstract

The photophysical and photoprototropic properties of 3,3'-diaminodiphenylsulphone (3DADPS) in aqueous beta-cyclodextrin (beta-CDx) solution have been investigated using absorption and fluorescence spectral techniques. beta-CDx forms 1:1 inclusion complex with 3DADPS as revealed by steady state and time-resolved fluorescence spectroscopy. This inclusion complex formation was also confirmed by the FT-IR and SEM image analysis of solid complex prepared by co-precipitation method. The existence of twisted intramolecular charge transfer state and the unusual red shift observed during inclusion complexation were analyzed and discussed. The ground and excited state acidity constants in beta-CDx are reported. Based on the photophysical and photoprototropic characteristics of 3DADPS in beta-CDx, the structure of the 1:1 inclusion complex is proposed.

References

Sep 17, 2003·Biochemistry·Elizabeth H ClarkAnthony G Lee
Jun 24, 2006·Journal of Fluorescence·I V Muthu Vijayan Enoch, M Swaminathan

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Citations

Dec 3, 2014·Carbohydrate Polymers·Sudha NatesanIsrael V M V Enoch
Dec 9, 2014·Journal of Biomolecular Structure & Dynamics·Sowrirajan ChandrasekaranIsrael V M V Enoch
Jul 31, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Min LiuBingquan Wang
Sep 11, 2012·The Journal of Physical Chemistry. B·Warathip SiripornnoppakhunMongkol Sukwattanasinitt
Sep 14, 2015·Journal of Pharmaceutical and Biomedical Analysis·Zsófia Edit PápayIstván Antal
Dec 14, 2016·Journal of Fluorescence·Rajaram RajamohanMeenakshisundaram Swaminathan

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