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  The phonon wings in the (S1 <-- S0) spectra of tetracene, pentacene, porphin and phthalocyanine in liquid helium droplets

Hartmann, M., Lindinger, A., Toennies, J. P., & Vilesov, A. F. (2002). The phonon wings in the (S1 <-- S0) spectra of tetracene, pentacene, porphin and phthalocyanine in liquid helium droplets. Physical Chemistry Chemical Physics, 4(20), 4839-4844.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-17B8-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-17B9-8
Genre: Journal Article

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 Creators:
Hartmann, M., Author
Lindinger, A., Author
Toennies, J. P.1, Author              
Vilesov, A. F., Author
Affiliations:
1Emeritus Group Molecular Interactions, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063297              

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 Abstract: The vibronic spectra of the large organic molecules tetracene (C18H12), pentacene (C24H14), base-free porphin (C20H14N4) and base-free phthalocyanine (C32H18N8) have been investigated in large (N = 103-104) 4He droplets using laser induced fluorescence. The spectra show sharp zero phonon lines (Δν ≤ 0.2 cm-1), accompanied by weaker phonon wings on the blue side. The very small inhomogeneous broadening of the zero phonon lines supports the unique properties of liquid He as an extremely gentle ultra-cold matrix for high resolution spectroscopy of larger molecules. Pronounced structures in the phonon wings, which are characteristic for each molecule, are attributed to the excitation of vibrational modes of the helium atoms located in shells surrounding the molecule.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 13422
ISI: 000178767800001
 Degree: -

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Title: Physical Chemistry Chemical Physics
  Alternative Title : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Pages: - Volume / Issue: 4 (20) Sequence Number: - Start / End Page: 4839 - 4844 Identifier: ISSN: 1463-9076