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Raman polarization studies of highly oriented organic thin films
Author(s) -
Presser V.,
Schuster B.E.,
Casu M. B.,
Heinemeyer U.,
Schreiber F.,
Nickel K. G.,
Chassé T.
Publication year - 2009
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2361
Subject(s) - raman spectroscopy , thin film , rutile , polarization (electrochemistry) , materials science , molecular vibration , chemistry , analytical chemistry (journal) , optics , nanotechnology , organic chemistry , physics
In this work we report on the capability of polarized Raman spectroscopy to investigate the structure of thin organic films. Diindenoperylene (DIP) thin films on (1 × 1)‐rutile(110) were prepared via organic molecular beam deposition (OMBD). Raman spectra of DIP thin films showed several strong Raman modes in the wavenumber region from 1200 to 1650 cm −1 . The A g mode at 1284 cm −1 shows two contributions, thereby indicating the coexistence of at least two DIP film structures. Polarized Raman spectroscopy was applied to characterize the molecular orientation and the dominance of the σ‐configuration (i.e. upright standing DIP molecules) was found. Copyright © 2009 John Wiley & Sons, Ltd.