THERMAL-DESORPTION MEASUREMENT OF ULTRATHIN EPITAXIAL ORGANIC FILMS BY OPTICAL SPECTROSCOPY

Authors
SHIMADA T TAIRA H KOMA A
Citation
T. Shimada et al., THERMAL-DESORPTION MEASUREMENT OF ULTRATHIN EPITAXIAL ORGANIC FILMS BY OPTICAL SPECTROSCOPY, Surface science, 384(1-3), 1997, pp. 302-307
Citations number
12
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
384
Issue
1-3
Year of publication
1997
Pages
302 - 307
Database
ISI
SICI code
0039-6028(1997)384:1-3<302:TMOUEO>2.0.ZU;2-9
Abstract
Thermal desorption of epitaxial films of vanadyl phthalocyanine (VOPc: C32N8H16VO) and squaric acid (SQ:C4O4H2) was measured by using tempera ture programmed optical absorption spectroscopy. The activation energi es for the desorption and pre exponential factors were determined by m easuring the amount of the molecules remaining in the film. Change in the molecular arrangement of VOPc during the desorption was detected f rom the spectra. The effects of hydrogen bonding and antiferroelectric transition of SQ are discussed. (C) 1997 Elsevier Science B.V.