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Title: Ultrafast vibrational dynamics in a quasi-one-dimensional system: Femtosecond impulsive excitation of the PtBr(ethylenediamine) mixed-valence linear chain complex

Abstract

The authors have used femtosecond impulsive excitation to time-resolve the vibrational motions following the excitation of the optical intervalence charge transfer transition in a quasi-one-dimensional molecular solid, the mixed-valence metal-halide linear chain complex [Pt(en){sub 2}][Pt(en){sub 2}Br{sub 2}]{center_dot}(PF{sub 6}){sub 4} (en = ethylenediamine, C{sub 2}H{sub 8}N{sub 2}). Wavelength-resolved measurements reveal an induced absorption signal assigned to the formation of the self-trapped exciton that is strongly modulated by vibrational wavepacket oscillations originating on both the ground and excited electronic states. The ground-state response, which includes the fundamental chain axis symmetric stretch frequency and its harmonics, is discussed in terms of resonantly enhanced impulsive stimulated Raman excitation of a strongly coupled electron-phonon system.

Authors:
; ; ;
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (US)
Sponsoring Org.:
Petroleum Research Fund; National Science Foundation (NSF); USDOE
OSTI Identifier:
20075901
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory
Additional Journal Information:
Journal Volume: 104; Journal Issue: 18; Other Information: PBD: 11 May 2000; Journal ID: ISSN 1089-5639
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; PLATINUM COMPLEXES; PLATINUM BROMIDES; AMINES; MOLECULAR STRUCTURE; VIBRATIONAL STATES; DYNAMICS

Citation Formats

Dexheimer, S.L., Van Pelt, A.D., Brozik, J.A., and Swanson, B.I. Ultrafast vibrational dynamics in a quasi-one-dimensional system: Femtosecond impulsive excitation of the PtBr(ethylenediamine) mixed-valence linear chain complex. United States: N. p., 2000. Web. doi:10.1021/jp993859f.
Dexheimer, S.L., Van Pelt, A.D., Brozik, J.A., & Swanson, B.I. Ultrafast vibrational dynamics in a quasi-one-dimensional system: Femtosecond impulsive excitation of the PtBr(ethylenediamine) mixed-valence linear chain complex. United States. doi:10.1021/jp993859f.
Dexheimer, S.L., Van Pelt, A.D., Brozik, J.A., and Swanson, B.I. Thu . "Ultrafast vibrational dynamics in a quasi-one-dimensional system: Femtosecond impulsive excitation of the PtBr(ethylenediamine) mixed-valence linear chain complex". United States. doi:10.1021/jp993859f.
@article{osti_20075901,
title = {Ultrafast vibrational dynamics in a quasi-one-dimensional system: Femtosecond impulsive excitation of the PtBr(ethylenediamine) mixed-valence linear chain complex},
author = {Dexheimer, S.L. and Van Pelt, A.D. and Brozik, J.A. and Swanson, B.I.},
abstractNote = {The authors have used femtosecond impulsive excitation to time-resolve the vibrational motions following the excitation of the optical intervalence charge transfer transition in a quasi-one-dimensional molecular solid, the mixed-valence metal-halide linear chain complex [Pt(en){sub 2}][Pt(en){sub 2}Br{sub 2}]{center_dot}(PF{sub 6}){sub 4} (en = ethylenediamine, C{sub 2}H{sub 8}N{sub 2}). Wavelength-resolved measurements reveal an induced absorption signal assigned to the formation of the self-trapped exciton that is strongly modulated by vibrational wavepacket oscillations originating on both the ground and excited electronic states. The ground-state response, which includes the fundamental chain axis symmetric stretch frequency and its harmonics, is discussed in terms of resonantly enhanced impulsive stimulated Raman excitation of a strongly coupled electron-phonon system.},
doi = {10.1021/jp993859f},
journal = {Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory},
issn = {1089-5639},
number = 18,
volume = 104,
place = {United States},
year = {2000},
month = {5}
}