Joshi, H. C. ; Upadhyay, A. ; Mishra, H. ; Tripathi, H. B. ; Pant , D. D. (1999) Edge excitation red shift and micro environmental effects on the photophysics of quinine bisulphate dication Journal of Photochemistry and Photobiology A: Chemistry, 122 (3). pp. 185-189. ISSN 1010-6030
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S10106...
Related URL: http://dx.doi.org/10.1016/S1010-6030(99)00029-5
Abstract
Photophysical properties of quinine bisulphate dication (QSD) in polymer matrices viz. polymethyl methacarylate (PMMA), cellulose acetate (CA), Nafion®-117 and polyvinyl alcohol (PVA) along with a comparative study in fluid media (frozen glass) has been reported. Edge excitation red shift (EERS) is observed in all these media. The magnitude of EERS increases in the frozen glass as compared to liquid phase. The polymers also differ in the magnitude of EERS. The results suggest the presence of the molecule in different geometries in the polymeric media. The photophysical behavior has been found to be sensitive to the micro-environmental polarity and free volume of the matrix.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Quinine Bisulphate Dication; EERS; Polymer; Fluoresence |
| ID Code: | 67892 |
| Deposited On: | 02 Nov 2011 09:53 |
| Last Modified: | 02 Nov 2011 09:53 |
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