UNIGE document Scientific Article
previous document  unige:43539  next document
add to browser collection
Title

Complementary Surface Second Harmonic Generation and Molecular Dynamics Investigation of the Orientation of Organic Dyes at a Liquid/Liquid Interface

Authors
Kolodezny, Dmitry
Published in Langmuir. 2014, vol. 30, no. 46, p. 13869-13876
Abstract The second-order nonlinear response of two dyes adsorbed at the dodecane/water interface was investigated by surface second harmonic generation (SSHG). These dyes consist of the same chromophoric unit, 2-pyridinyl-5-phenyloxazole, with an alkyl chain located at the two opposite ends. The analysis of the polarization dependence of the SSHG intensity as usually performed points to similar tilt angles of the two dyes with respect to the interface but does not give information on the absolute direction. Molecular dynamics (MD) simulations reveal that both dyes lie almost flat at the interface but have opposite orientations. A refined SSHG data analysis with the width of the orientational distribution yields tilt angles that are in very satisfactory agreement with the MD simulations.
Identifiers
Full text
Article (Published version) (560 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://pubs.acs.org/doi/abs/10.1021/la503121g
Structures
Research group Groupe Vauthey
Citation
(ISO format)
SVECHKAREV, Denis et al. Complementary Surface Second Harmonic Generation and Molecular Dynamics Investigation of the Orientation of Organic Dyes at a Liquid/Liquid Interface. In: Langmuir, 2014, vol. 30, n° 46, p. 13869-13876. https://archive-ouverte.unige.ch/unige:43539

241 hits

0 download

Update

Deposited on : 2014-12-16

Export document
Format :
Citation style :