000			a
999			_c8064 _d8064
003			OSt
005			20220721154818.0
008			190101b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_97337 _aMelavanki, R M
245			_aSolvent effects on the dipole moments and photo physical properties of laser dye
250			_aVol. 56(10), October
260			_aNew Delhi _c2018 _bCSIR
300			_a749-754
520			_aThe absorption and emission spectra of fluorescent laser dye namely, 4,4”’-bis-2-butyyloctyl-oxy)-P-quaterphenyl have been recorded at room temperature in solvents of different polarities. The exited state dipole moments (µe) have been estimated from Lippert’s, Bakhshiev’s and Kawski-Chamma-Viallet’s equations using the variation of Stoke’s shift with the solvent dielectric constant and refractive index. The geometry of the molecule has been fully optimized and the µg has also been calculated theoretically by Gaussian 03 software using B3LYP/6-31g* level of theory. The µg and µe have been calculated by means of solvatochromic shift method. It has been observed that µe is higher than µg, indicating a substantial redistribution of the π-electron densities in a more polar excited state for the selected laser dye. Further, the changes in the dipole moment (µ) has been calculated both from solvatochromic shift method and microscopic empirical solvent polarity parameter (E) and values are compared.
650		0	_94642 _aHumanities and Applied Sciences
700			_97338 _aMuttannavar, V. T.
773	0		_dNew Delhi CSIR-NISCAIR _tIndian journal of pure & applied physics (IJPAP) _x0019-5596
856			_yClick here _uhttp://nopr.niscair.res.in/handle/123456789/45250
942			_2ddc _cAR