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Effect of Molecular Structure on the Molecular Interactions of Some Binary Mixtures of Sulfolane: a Photophysical Study. | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 17, 2014, Pages 73-81 | ||
| Authors | ||
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| Abstract | ||
| Abstract The shape and intensity of the sulfolane fluorescence spectra in its binary mixture with six solvents ; + DMSO , +acetone ( Ac) , + N,N-dimethylformamid (DMFA) , + ethylene glycol(EG) ,+methoxy ethanol(MEOH) and ethoxy ehtanol (EEOH) were studied using fluorescence quenching technique. All the solvents ,except DMFA,quenched sulfolane fluorescence emission.The main contribution to the quenching process might be due to the hydrogen bonding molecular interaction which have stronger forces to associate the unlike molecules than that for the like molecules.The quenching efficiency is dependent on the solvent structure . DMFA solvent has different behavior whearby it increase sulfolane fluorescence intensity by increasing solvent concentration. Changing the hydrogen atom in the ethylene glycol by a methyl group results in the decreasing of the quenching efficiency of sulfolane fluorescence. The quenching processes were almost having a static pattern. | ||
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