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Characterization of evaporated trivalent and tetravalent phthalocyanines thin films:: Different degree of organization

被引：53
作者：
Del Caño, T
Parra, V
Rodríguez-Méndez, ML
Aroca, RF
De Saja, JA
机构：
[1] Univ Valladolid, Dept Fis Mat Condensada, E-47011 Valladolid, Spain
[2] Univ Valladolid, ETS II, Dept Quim Fis & Quim Inorgan, E-47011 Valladolid, Spain
[3] Univ Windsor, Mat & Surface Sci Grp, Windsor, ON N9B 3P4, Canada
来源：
APPLIED SURFACE SCIENCE | 2005年 / 246卷 / 04期
关键词：
phthalocyanines; thin film; molecular organization; RAIRS;
D O I：
10.1016/j.apsusc.2004.11.036
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Evaporated thin films of trivalent - chloroindiumphthalocyanine (CIInPc) and chlorogalliumphthalocyanine (CIGaPc) - and tetravalent phthalocyanines - vanadyl-phthalocyanine (VOPc) and titanylphthalocyanine (TiOPc) - have been characterized by means of electronic absorption and infrared spectroscopy (both in transmission and reflection-absorption modes). It was found that the ability of self-organization clearly differs between trivalent and tetravalent phthalocyanine derivatives. The results revealed that CIGaPc and CIInPc thin films result to be highly organized. On the other hand, the evaporation of tetravalent phthalocyanines powders forms amorphous thin films. However, further film treatments (thermal annealing and solvent exposure) lead to the phase transition from amorphous to alpha-form, and as a result, a high degree of molecular organization is induced. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：327 / 333
页数：7
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