Influence of an identified dimer vibration on the emission spectrum of 
[2,2]paracyclophane

Goldacker, Wilfried; Schweitzer, Dieter; Dinse, Klaus−Peter; Hausser, Karl H.

doi:10.1016/0301-0104(80)80010-3

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Influence of an identified dimer vibration on the emission spectrum of [2,2]paracyclophane

Goldacker, W., Schweitzer, D., Dinse, K., & Hausser, K. H. (1980). Influence of an identified dimer vibration on the emission spectrum of [2,2]paracyclophane. Chemical Physics, 48(1), 105-111. doi:10.1016/0301-0104(80)80010-3.

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Creators:
Goldacker, Wilfried¹, Author
Schweitzer, Dieter¹, Author
Dinse, Klaus−Peter², Author
Hausser, Karl H.¹, Author

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1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705
2Max Planck Institute for Medical Research, Max Planck Society, ou_1125545

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Abstract: The emission spectrum of polycrystalline [2,2]paracylophane shows a resolved vibronic structure with a 241 cm−1 progression at He temperatures. The dependence of the energy of this mode upon selective deuteration in combination with results from FIR and Raman spectra could be used to identify the mode as a torsional dimer vibration. The emission spectra could be simulated assuming a linear coupling of the torsional mode to the electronic transitions with coupling strengths of S = 10 (fluorescence) and S = 13 (phosphorescence). This corresponds to an equilibrium displacement of the benzene rings under electronic excitation by a torsional angle of 10.6° (S1) and 12.1° (T1), in addition to the small torsion in the ground state S0 by about 3°.

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Language(s): eng - English

Dates: Submitted: 1979-11-26Published Online: 2001-11-12Date issued: 1980-05-01

Publication Status: Issued

Pages: 7

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Identifiers: DOI: 10.1016/0301-0104(80)80010-3

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Title: Chemical Physics

Other : Chem. Phys.

Source Genre: Journal

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Publ. Info: Amsterdam : Elsevier B.V.

Pages: - Volume / Issue: 48 (1) Sequence Number: - Start / End Page: 105 - 111 Identifier: ISSN: 0301-0104
CoNE: https://pure.mpg.de/cone/journals/resource/954925509371