Fluorescence quenching of dye molecules such as coumarin 153, DCM and nile red by the stable 2,4,6-tri-tertbutylphenoxyl radical in an MTHF glass matrix at 77 K was studied by means of subnanosecond time-resolved fluorescence spectroscopy. The quenching process is ascribed to the dipole-dipole inter
Formation of XeF* excimers in the process of energy transfer from excited nitrogen molecules to XeF2
β Scribed by A.M. Pravilov; L.G. Smirnova; A.F. Vilesov
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 447 KB
- Volume
- 187
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Emission of XeP( B, C) excimers was observed when XeF, was added to active nitrogen. This indicates XeP formation in the process of dissociative electronic energy transfer from NT to XeFI: N: + XeF 1 *XeF*+ N2 + F. The termolecular rate constant for XeF encitation in active nitrogen has been measured to be 1O-'4 cm6 s-l. The formation of XeP in the reaction Xe*({6s}) + XeF+XeP+ Ft Xe was observed and the yield of Xep excitation is estimated to be 0.5.
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