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http://nopr.niscair.res.in/handle/123456789/25350| Title: | Fluorescence studies of biphenyl doped by pyrene and perylene |
| Authors: | Pujari, S R Jadhav, S A Bhosale, P N Rao, P M R Patil, S R |
| Issue Date: | Feb-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Fluorescent biphenyl absorbing short wave UV radiation and emitting at long wave UV radiation has been used as a solid matrix and its luminophors have been prepared by adding intentionally fluorescent pyrene and perylene impurities. From the fluorescence spectra it is seen that the pyrene impurity shifts the UV fluorescence of biphenyl towards red. Pyrene doped biphenyl emits in blue region at a wavelength of maximum emission 458 nm due to formation of exciplex. Incorporation of perylene into bicomponent biphenyl-pyrene system gave tricomponent crystal systems emitting in green region of visible spectrum. The fluorescence spectra of tricomponent biphenyl are broad structurcless bands with maximum emission at 501 nm. These emission bands are interpreted as arising due to exciplex formation between pyrene and perylene in biphenyl matrix. |
| Page(s): | 115-121 |
| URI: | http://hdl.handle.net/123456789/25350 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Appears in Collections: | IJPAP Vol.40(02) [February 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJPAP 40(2) 115-121.pdf | 1.12 MB | Adobe PDF | View/Open |
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