NDLI: Preferential Solvation of 1,4-Dimethoxy-2,3-Dimethyl-9,10-Anthraquinone-A Spectrophotometric and Fluorometric Study

Content Provider	Springer Nature Link
Author	Sasirekha, V. Vanelle, P. Terme, T. Ramakrishnan, V.
Copyright Year	2008
Abstract	Electronic absorption and fluorescence emission spectra of DMDMAQ (1,4-dimethoxy-2,3-dimethyl-9,10-anthraquinone) have been studied as a function of solvent composition in some binary mixtures and in different neat solvents. The binary mixtures consist CCl$_{4}$ (Carbon tetrachloride)-DMSO (Dimethylsulfoxide), EtOH (Ethanol)-DMSO, and CCl$_{4}$-EtOH combination of single solvents. The wavelength maxima of the absorption band for DMDMAQ are quite solvent sensitive in aprotic solvents. But, in protic solvent, there is no marked shift in absorption and emission maximum which shows the absence of specific interaction. Excited state shows increasing shift with increasing solvent polarity compared to ground state. The ratio of dipole moment in the excited state to that in the ground state was calculated. Different criteria were considered to analyse preferential solvation characteristics in different binary mixtures, viz., local mole fraction ( $${\rm X}_2^{\text{L}} $$ ), solvation index (δ$_{S2}$) and exchange constant (K$_{12}$).
Starting Page	419
Ending Page	426
Page Count	8
File Format	PDF
ISSN	10530509
Journal	Journal of Fluorescence
Volume Number	19
Issue Number	3
e-ISSN	15734994
Language	English
Publisher	Springer US
Publisher Date	2008-11-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	1,4-dimethoxy-2,3-dimethyl-9,10-anthraquinone Solvatochromism Preferential solvation Optical absorption Fluorescence emission Specific interaction Solute-solvent interaction Solvent-solvent interaction Analytical Chemistry Biochemistry Biotechnology Biophysics/Biomedical Physics Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Spectroscopy Law Biochemistry Clinical Biochemistry Clinical Psychology

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