Femtosecond study of self-trapped vibrational excitons in crystalline acetanilide

Publication: Research - peer-reviewJournal article – Annual report year: 2002

View graph of relations

Femtosecond IR spectroscopy of delocalized NH excitations of crystalline acetanilide confirms that self-trapping in hydrogen-bonded peptide units exists and does stabilize the excitation. Two phonons with frequencies of 48 and 76 cm(-1) are identified as the major degrees of freedom that mediate self-trapping. After selective excitation of the free exciton, self-trapping occurs within a few 100 fs. Excitation of the self-trapped states disappears from the spectral window of this investigation on a 1 ps time scale, followed by a slow ground state recovery of the hot ground state within 18 ps.
Original languageEnglish
JournalPhysical Review Letters
Publication date2002
Volume88
Issue6
Pages067403
ISSN0031-9007
DOIs
StatePublished

Bibliographical note

Copyright (2002) American Physical Society

CitationsWeb of Science® Times Cited: 70

Keywords

  • SOLIDS, SPECTROSCOPY, MECHANISM, MODES, SOLITONS
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

Download statistics

No data available

ID: 4890902