Quasihomogeneous line broadening of a hydrogen-bonded polymer, investigated by picosecond infrared holeburning

H. Graener; T. Lösch; A. Laubereau

doi:10.1063/1.459660

Quasihomogeneous line broadening of a hydrogen-bonded polymer, investigated by picosecond infrared holeburning

H. Graener, T. Lösch, A. Laubereau

Universität Bayreuth

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Transient spectral holes with lifetimes of several picoseconds are investigated in the infrared absorption band of the OH stretching vibration of the terpolymer polyvinyl butyral. A large variation of the quasihomogeneous linewidth from 7-45 cm^-1 is determined from the measured holewidth in the temperature range 80-330 K and interpreted in terms of anharmonic coupling to a low frequency mode ν₂. The result ν₂ = 135 ± 8 cm^-1 provides strong evidence for indirect dephasing via the OH⋯O bridge stretching vibration. The inhomogeneous broadening of the total band is verified by the picosecond infrared holes. The inhomogeneity is related to an approximately static distribution of hydrogen bridges generated by local disorder and displays a different temperature behavior.

Original language	English
Pages (from-to)	5365-5369
Number of pages	5
Journal	Journal of Chemical Physics
Volume	93
Issue number	8
DOIs	https://doi.org/10.1063/1.459660
State	Published - 1990
Externally published	Yes

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title = "Quasihomogeneous line broadening of a hydrogen-bonded polymer, investigated by picosecond infrared holeburning",

abstract = "Transient spectral holes with lifetimes of several picoseconds are investigated in the infrared absorption band of the OH stretching vibration of the terpolymer polyvinyl butyral. A large variation of the quasihomogeneous linewidth from 7-45 cm-1 is determined from the measured holewidth in the temperature range 80-330 K and interpreted in terms of anharmonic coupling to a low frequency mode ν2. The result ν2 = 135 ± 8 cm-1 provides strong evidence for indirect dephasing via the OH⋯O bridge stretching vibration. The inhomogeneous broadening of the total band is verified by the picosecond infrared holes. The inhomogeneity is related to an approximately static distribution of hydrogen bridges generated by local disorder and displays a different temperature behavior.",

author = "H. Graener and T. L{\"o}sch and A. Laubereau",

year = "1990",

doi = "10.1063/1.459660",

language = "English",

volume = "93",

pages = "5365--5369",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Quasihomogeneous line broadening of a hydrogen-bonded polymer, investigated by picosecond infrared holeburning

AU - Graener, H.

AU - Lösch, T.

AU - Laubereau, A.

PY - 1990

Y1 - 1990

N2 - Transient spectral holes with lifetimes of several picoseconds are investigated in the infrared absorption band of the OH stretching vibration of the terpolymer polyvinyl butyral. A large variation of the quasihomogeneous linewidth from 7-45 cm-1 is determined from the measured holewidth in the temperature range 80-330 K and interpreted in terms of anharmonic coupling to a low frequency mode ν2. The result ν2 = 135 ± 8 cm-1 provides strong evidence for indirect dephasing via the OH⋯O bridge stretching vibration. The inhomogeneous broadening of the total band is verified by the picosecond infrared holes. The inhomogeneity is related to an approximately static distribution of hydrogen bridges generated by local disorder and displays a different temperature behavior.

AB - Transient spectral holes with lifetimes of several picoseconds are investigated in the infrared absorption band of the OH stretching vibration of the terpolymer polyvinyl butyral. A large variation of the quasihomogeneous linewidth from 7-45 cm-1 is determined from the measured holewidth in the temperature range 80-330 K and interpreted in terms of anharmonic coupling to a low frequency mode ν2. The result ν2 = 135 ± 8 cm-1 provides strong evidence for indirect dephasing via the OH⋯O bridge stretching vibration. The inhomogeneous broadening of the total band is verified by the picosecond infrared holes. The inhomogeneity is related to an approximately static distribution of hydrogen bridges generated by local disorder and displays a different temperature behavior.

UR - http://www.scopus.com/inward/record.url?scp=0010923628&partnerID=8YFLogxK

U2 - 10.1063/1.459660

DO - 10.1063/1.459660

M3 - Article

AN - SCOPUS:0010923628

SN - 0021-9606

VL - 93

SP - 5365

EP - 5369

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 8

ER -

Quasihomogeneous line broadening of a hydrogen-bonded polymer, investigated by picosecond infrared holeburning

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