Femtosecond time resolved molecular dynamics of a polydiacetylene backbone

被引：36

作者：

Bigot, JY

Pham, TA

Barisien, T

机构：

[1] Inst. de Phys. et Chim. des M., Unité Mixte CNRS-ULP-EHICS, 67037 Strasbourg Cedex

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 259卷 / 5-6期

关键词：

ABSORPTION; DISSOCIATION; SPECTRUM; FILMS;

D O I：

10.1016/0009-2614(96)00864-0

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 report the observation of the molecular motion corresponding to the C=C stretching vibrations along the backbone of a polydiacetylene, using time resolved pump-probe spectroscopy with 9 fs optical pulses. The associated wavepacket oscillates with 23 fs period before it is damped on the excited state potential. Detailed features of the wavepacket motion are observed like a rr dephasing in the spectral region of induced absorption to higher excited states.

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收藏

页码：469 / 474

页数：6

相关论文

共 19 条

[1] TIME-DEPENDENT ABSORPTION OF FRAGMENTS DURING DISSOCIATION [J].

BERSOHN, R ;

ZEWAIL, AH .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1988, 92 (03) :373-378

[2]

Bigot JY, 1996, FEMTOCHEMISTRY, P616

[3]

DACOSTA V, IN PRESS

[4] COMPRESSION OF OPTICAL PULSES TO 6 FEMTOSECONDS BY USING CUBIC PHASE COMPENSATION [J].

FORK, RL ;

CRUZ, CHB ;

BECKER, PC ;

SHANK, CV .

OPTICS LETTERS, 1987, 12 (07) :483-485

[5] EVOLUTION OF THE VIBRONIC ABSORPTION-SPECTRUM IN A MOLECULE FOLLOWING IMPULSIVE EXCITATION WITH A 6 FS OPTICAL PULSE [J].

FRAGNITO, HL ;

BIGOT, JY ;

BECKER, PC ;

SHANK, CV .

CHEMICAL PHYSICS LETTERS, 1989, 160 (02) :101-104

[6] WAVE-PACKET DYNAMICS - NEW PHYSICS AND CHEMISTRY IN FEMTO-TIME [J].

GARRAWAY, BM ;

SUOMINEN, KA .

REPORTS ON PROGRESS IN PHYSICS, 1995, 58 (04) :365-419

[7] PHONON-MEDIATED OPTICAL NONLINEARITY IN POLYDIACETYLENE [J].

GREENE, BI ;

MUELLER, JF ;

ORENSTEIN, J ;

RAPKINE, DH ;

SCHMITTRINK, S ;

THAKUR, M .

PHYSICAL REVIEW LETTERS, 1988, 61 (03) :325-328

[8] SINGLE ORIENTATION IN POLY(DIACETYLENE) FILMS FOR NONLINEAR OPTICS - MOLECULAR EPITAXY OF 1,6-BIS(9-CARBAZOLYL)-2,4-HEXADIYNE ON ORGANIC-CRYSTALS [J].

LEMOIGNE, J ;

KAJZAR, F ;

THIERRY, A .

MACROMOLECULES, 1991, 24 (09) :2622-2628

[9] DEPHASING DYNAMICS OF THE VIBRONIC STATES OF EPITAXIAL POLYDIACETYLENE FILMS [J].

PHAM, TA ;

DAUNOIS, A ;

MERLE, JC ;

LEMOIGNE, J ;

BIGOT, JY .

PHYSICAL REVIEW LETTERS, 1995, 74 (06) :904-907

[10] EXCITONS IN POLYMERIZED DIACETYLENES [J].

PHILPOTT, MR .

CHEMICAL PHYSICS LETTERS, 1977, 50 (01) :18-21