Surface-assisted transient displacement charge technique. I. Photoinduced charge transfer in self-assembled monolayers

Alexey V Krasnoslobodtsev, Sergei N. Smirnov

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Surface-assisted photoinduced transient displacement charge (SPTDC) technique was developed in order to study light-induced charge transfer in surface-bound molecules and applied to investigation of self-assembled monolayers of 7-diethylaminocoumarin and 2,4-dinitrophenylamine. The dipole moment change measured by SPTDC correlates reasonably well with that measured in solution by standard PTDC technique and with semiempirical calculations. Shortening of the excited-state lifetime of surface-immobilized coumarin due to stimulated emission was observed in both fluorescence and dipole measurements. The dipole signal decline in low-polarity solvents indicates the importance of dipole-dipole interaction that causes reorientation of molecules upon photoexcitation.

Original languageEnglish (US)
Pages (from-to)17931-17940
Number of pages10
JournalJournal of Physical Chemistry B
Volume110
Issue number36
DOIs
StatePublished - Sep 14 2006

Fingerprint

Self assembled monolayers
Charge transfer
charge transfer
dipoles
Stimulated emission
Molecules
Photoexcitation
Dipole moment
stimulated emission
photoexcitation
Excited states
retraining
molecules
polarity
dipole moments
Fluorescence
life (durability)
fluorescence
causes
excitation

ASJC Scopus subject areas

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

Cite this

Surface-assisted transient displacement charge technique. I. Photoinduced charge transfer in self-assembled monolayers. / Krasnoslobodtsev, Alexey V; Smirnov, Sergei N.

In: Journal of Physical Chemistry B, Vol. 110, No. 36, 14.09.2006, p. 17931-17940.

Research output: Contribution to journalArticle

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