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

Hideaki Kano, Takashi Saito, Takayoshi Kobayashi

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)


Sub-5-fs spectroscopy of porphyrin J-aggregates reveals a coherent molecular vibration coupled to the Frenkel exciton. The bleaching and induced absorption signals show synchronous oscillations with the frequency of 244 cm-1. The coherent oscillation is explained by a modulated transition dipole moment, which is due to a dynamic intensity borrowing from the intense B-transition to the weak Q-transition through the ruffling mode with the 244 cm-1-frequency.

Original languageEnglish
Pages (from-to)413-419
Number of pages7
JournalJournal of Physical Chemistry B
Issue number2
Publication statusPublished - Jan 18 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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