Dynamic intensity borrowing in porphyrin J-aggregates revealed by sub-5-fsspectroscopy

Citation
H. Kano et al., Dynamic intensity borrowing in porphyrin J-aggregates revealed by sub-5-fsspectroscopy, J PHYS CH B, 105(2), 2001, pp. 413-419
Citations number
42
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
1520-6106 → ACNP
Volume
105
Issue
2
Year of publication
2001
Pages
413 - 419
Database
ISI
SICI code
1520-6106(20010118)105:2<413:DIBIPJ>2.0.ZU;2-S
Abstract
Sub-5-fs spectroscopy of porphyrin J-aggregates reveals a coherent molecula r vibration coupled to the Frenkel exciton. The bleaching and induced absor ption signals show synchronous oscillations with the frequency of 244 cm(-1 ). The coherent oscillation is explained by a modulated transition dipole m oment, which is due to a dynamic intensity borrowing from the intense B-tra nsition to the weak Q-transition through the ruffling mode with the 244 cm( -1)-frequency.