Exciplex luminescence in D2O solubilized AOT reverse micelle: A magnetic field effect study

Magnetic field effect (MFE) on pyrene–N,N-dimethylanilne exciplex fluorescence has been monitored in AOT/D2O/n-heptane and compared with that of AOT/H2O/n-heptane. Variation of the MFE with temperature in AOT reverse micelle has also been studied. Magnetic field modulated pyrene–N,N-dimethylanilne e...

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Bibliographic Details
Published in:Chemical physics letters 2008-06, Vol.458 (1-3), p.81-87
Main Authors: Das, Doyel, Nath, Deb Narayan
Format: Article
Language:English
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Summary:Magnetic field effect (MFE) on pyrene–N,N-dimethylanilne exciplex fluorescence has been monitored in AOT/D2O/n-heptane and compared with that of AOT/H2O/n-heptane. Variation of the MFE with temperature in AOT reverse micelle has also been studied. Magnetic field modulated pyrene–N,N-dimethylanilne exciplex fluorescence has been studied in reverse micelle of D2O/AOT/n-heptane. Results have been compared with those in H2O/AOT/n-heptane to understand the effect of deuterium on exciplex luminescence. Strikingly the extent of magnetic field effect (MFE) has been found to be much larger in D2O/AOT/n-heptane. The fluorescence lifetime of the exciplexes have been found to be larger in D2O/AOT/n-heptane than that in H2O/AOT/n-heptane. The stronger hydrogen bond strength in D2O compared to that of H2O has been identified to be the prime factor for the effect. Variation of the MFE with temperature in D2O/AOT/n-heptane and H2O/AOT/n-heptane has also been studied.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2008.04.069