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Femtosecond dynamics of ground-state vibrational motion and energy flow: polymers of diacetylene

Vierheilig, A. and Chen, T. and Waltner, P. and Kiefer, W. and Materny, A. and Zewail, A. H. (1999) Femtosecond dynamics of ground-state vibrational motion and energy flow: polymers of diacetylene. Chemical Physics Letters, 312 (5-6). pp. 349-356. ISSN 0009-2614. doi:10.1016/S0009-2614(99)00904-5.

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In this Letter we report femtosecond (fs) dynamics of the ground-state vibrational motions and energy flow in polymers of diacetylene embedded in monomer single crystals at 8 K. The ground-state wavepackets are prepared and probed using fs-CARS methods. The observed coherence of the wavepacket among four vibrational modes, including the Fermi resonance, elucidates the time scales and the selectivity involved. From measurements of the dephasing times we establish the nature of the weak coupling to bath modes. The phase-shifted oscillatory behavior observed in the 3-D images suggests the correspondence with IVR dynamics.

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Additional Information:© 1999 Elsevier Science B.V. Received 26 July 1999, Available online 3 January 2000. We thank Mrs. Irene Müller of the University of Bayreuth for growing excellent samples of FBS-PDA. We are also grateful to Dr. H. Schwoerer for his help in setting up the fs laser system. One of us (T.C.) thanks the Stiftung Volkswagenwerk for a postgraduate scholarship. Financial support by the German Science Foundation (SFB 347, Project C-2 and SFB 410, Project C-3) is highly acknowledged. A.H.Z. is a Röntgen Gast Professor at the University of Würzburg.
Funding AgencyGrant Number
Stiftung VolkswagenwerkUNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)SFB-347
Deutsche Forschungsgemeinschaft (DFG)SFB-410
University of WürzburgUNSPECIFIED
Issue or Number:5-6
Record Number:CaltechAUTHORS:20160823-093535383
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Official Citation:A Vierheilig, T Chen, P Waltner, W Kiefer, A Materny, A.H Zewail, Femtosecond dynamics of ground-state vibrational motion and energy flow: polymers of diacetylene, Chemical Physics Letters, Volume 312, Issues 5–6, 29 October 1999, Pages 349-356, ISSN 0009-2614, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69839
Deposited By: Ruth Sustaita
Deposited On:23 Aug 2016 20:39
Last Modified:13 Apr 2022 17:10

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