Intramolecular excimer formation with non-planar molecules: 1,3-dibiphenylpropane. Kinetic and thermodynamic results
✍ Scribed by Klaas A. Zachariasse; Wolfgang Kühnle; Albert Weller
- Book ID
- 103020084
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 566 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Intramolecular excimer formation with diiiphenylpropane in several alkane solvents is reported_ By a combination of fluorescence decay time and quantum yield measurements the rate constants descriiing the excimer formation and deactivation and the values for AH and AS of the excimer formation equilibrium could be determined These data are compared with results obtained with di(2-naphthyl) propane and di(lpyreny1) propane. It is argued that the difficulty to observe extimer emission with biphenyl under photoexcitation results from a very Iargc value of -AS. A comparison between the extimer fluorescence of diiiphenylpropane and 12.21 biphenylophane points to an unusually we& tramannular interaction in the phane.