Molecular vibrational dynamics in polyvinyl alcohol studied by femtosecond coherent Anti-Stokes Raman spectroscopy

被引：10

作者：

Kozai, T. ^{[1
]}

Yamashita, S. ^{[1
]}

Hirochi, K. ^{[1
]}

Miyagawa, H. ^{[1
]}

Tsurumachi, N. ^{[1
]}

Koshiba, S. ^{[1
]}

Nakanishi, S. ^{[1
]}

Itoh, H. ^{[1
]}

机构：

[1] Kagawa Univ, Dept Adv Mat Sci, Takamatsu, Kagawa 7610396, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2012年 / 553卷

关键词：

ENERGY; CARS;

D O I：

10.1016/j.cplett.2012.09.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have performed femtosecond time-resolved coherent anti-stokes Raman spectroscopy (CARS) to study the vibrational dynamics in polyvinyl alcohol (PVA) film. We observed femtosecond coherent vibrational relaxation and CARS signal beats in PVA at room temperature. We found that the coherent vibrational relaxation of anti-symmetric CH2 stretching modes in PVA is faster than that of symmetric modes, probably due to faster vibrational energy transfer. The coherent vibrational relaxation of OH stretching modes was observed to be slower than that of CH2 modes, because OH stretching modes have less resonant energy transfer rate compared to CH2 modes. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：26 / 29

页数：4

共 22 条

[1]

[Anonymous], 2002, PRINCIPLES NONLINEAR

[2]

[Anonymous], 1974, Characteristic Raman Frequencies of Organic Compounds

[3]

[Anonymous], 1975, INTRO INFRARED RAMAN

[4] Multipoint temperature and oxygen-concentration measurements using rotational coherent anti-Stokes Raman spectroscopy [J].

Bood, J ;

Brackmann, C ;

Bengtsson, PE ;

Aldén, M .

OPTICS LETTERS, 2000, 25 (20) :1535-1537

[5] Hydrogen bonding and vibrational energy relaxation in water-acetonitrile mixtures [J].

Cringus, D ;

Yeremenko, S ;

Pshenichnikov, MS ;

Wiersma, DA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (29) :10376-10387

[6] Microscopic mechanism of solute-solvent energy dissipation probed by picosecond time-resolved Raman spectroscopy [J].

Iwata, K ;

Hamaguchi, H .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (04) :632-637

[7]

Kozai T., 2010, ULTRAFAST PHENOMENA, VXVII, P261

[8] Dynamics of local substructures in water observed by ultrafast infrared hole burning [J].

Laenen, R ;

Rauscher, C ;

Laubereau, A .

PHYSICAL REVIEW LETTERS, 1998, 80 (12) :2622-2625

[9] Femtosecond CARS on H2 [J].

Lang, T ;

Kompa, KL ;

Motzkus, M .

CHEMICAL PHYSICS LETTERS, 1999, 310 (1-2) :65-72

[10] VIBRATIONAL DYNAMICS OF LIQUIDS AND SOLIDS INVESTIGATED BY PICOSECOND LIGHT-PULSES [J].

LAUBEREAU, A ;

KAISER, W .

REVIEWS OF MODERN PHYSICS, 1978, 50 (03) :607-665

← 1 2 3 →