Preparation of thin phthalocyanine layers and their structural and absorption properties

0333769 - FZÚ 2010 RIV CH eng J - Journal Article
Kment, Štěpán - Klusoň, Petr - Drobek, M. - Kužel, R. - Gregora, Ivan - Kohout, Michal - Hubička, Zdeněk
Preparation of thin phthalocyanine layers and their structural and absorption properties.
[Příprava, strukturní a absorpční valstnosti tenkých vrstev ftalocyaninů.]
Thin Solid Films. Roč. 517, č. 17 (2009), s. 5274-5279. ISSN 0040-6090. E-ISSN 1879-2731
R&D Projects: GA AV ČR KAN301370701; GA MŠMT(CZ) 1M06002; GA AV ČR KAN400720701; GA ČR(CZ) GD203/08/H032
Institutional research plan: CEZ:AV0Z10100522; CEZ:AV0Z40720504
Keywords : vacuum sublimation * phthalocyanines * sensors * thin fims
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.727, year: 2009

Phthalocyanines (Pcs) may act as efficient absorbents of photons in the visible region. These structures upon contact with photons from well-defined regions, specifically between 600 and 700 nm, may produce an excited triple state. Its extinction is accompanied by the formation of highly active singlet oxygen species. Its utilization ranges from sensors to selective medical diagnosis tools. In this work we report on preparation of Al and Zn phthalocyanines thin layers of a constant thickness via a method of vacuum sublimation. The produced films were smooth, homogeneous, resistant and well transparent. The films were examined by means of AFM, SEM, profilometry, ellipsometry, Raman spectroscopy and UV–VIS. Special attention was paid to the crystallinity changes with temperature observable by XRD. Light absorption properties of the Pcs films were compared with those recorded in solution (sulphonated Pcs dissolved in water).

Ftalocyaniny působí jako efektivní absorbenty ve viditelné oblasti spektra. Tyto struktury při absorpci záření v rozmezí 600 - 700 nm mohou produkovat excitované tripletní stavy. Tato vlastnost je využívána např. u sensorů nebo selektivních lékařských diagnostických metod. Práce se zabývá přípravou tenkých vrstev Al a Zn ftalocyaninů metodou vakuové sublimace. Vrstvy jsou srovnávány z hledoiska jejich fazikálních vlastností.
Permanent Link: http://hdl.handle.net/11104/0178681