DETERMINATION OF THE MOLECULAR-ORIENTATION OF RARE-EARTH BISPHTHALOCYANINE DERIVATIVE LANGMUIR-BLODGETT-FILMS BY POLARIZED ULTRAVIOLET-VISIBLE SPECTRA

Authors
LIANG BJ YUAN CW WEI Y
Citation
Bj. Liang et al., DETERMINATION OF THE MOLECULAR-ORIENTATION OF RARE-EARTH BISPHTHALOCYANINE DERIVATIVE LANGMUIR-BLODGETT-FILMS BY POLARIZED ULTRAVIOLET-VISIBLE SPECTRA, SPECT ACT A, 53(4), 1997, pp. 531-535
Citations number
5
Categorie Soggetti
Spectroscopy
Journal title
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY → ACNP
ISSN journal
13861425
Volume
53
Issue
4
Year of publication
1997
Pages
531 - 535
Database
ISI
SICI code
1386-1425(1997)53:4<531:DOTMOR>2.0.ZU;2-A
Abstract
A symmetrically substituted ytterbium bisphthalocyanine complex in com mon organic solvents formed stable Langmuir-Blodgett (LB) films. The s urface pressure versus area isotherm of a Langmuir film on water subph ase (pH ca. 5.4, 17 degrees C) has been investigated and an average ar ea per molecule of 190 Angstrom(2) is measured. The optical absorption increases linearly with the number of deposited layers. These films c an be deposited in reproducible manner. The associated forms of the co mpound and the particular orientation of R8YbPc2 molecular macrocycles in LB films are determined by polarized ultraviolet-visible (UV-VIS) spectra. (C) 1997 Elsevier Science B.V.