Layered silicate films with photochemically active porphyrin cations

0340224 - ÚACH 2010 RIV US eng J - Journal Article
Čeklovský, A. - Czímerová, A. - Lang, Kamil - Bujdák, J.
Layered silicate films with photochemically active porphyrin cations.
Pure and Applied Chemistry. Roč. 81, č. 8 (2009), s. 1385-1396. ISSN 0033-4545. E-ISSN 1365-3075
R&D Projects: GA AV ČR KAN100500651; GA ČR(CZ) GA203/06/1244
Grant - others:GA(SK) VEGA2/6180/27
Institutional research plan: CEZ:AV0Z40320502
Keywords : clay minerals * layer charge * smectites
Subject RIV: CA - Inorganic Chemistry
Impact factor: 2.289, year: 2009

The objective of this study was to prepare and characterize hybrid films based on layered silicates with a tetracationic porphyrin dye 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin (TMPyP) intercalated in the inorganic matrix. The properties of the TMPyP cations in the materials were compared with those of other systems (solutions, colloids) characterized mainly by absorption and fluorescence spectroscopies. Linearly polarized absorption spectroscopy, X-ray diffraction (XRD), and fluorescence microscopy were used as well. Using appropriate layered silicate templates, applying the premodification of the inorganic component with hydrophobic alkylammonium surfactants, and selecting an appropriate method, one can prepare the materials of broadly variable spectral properties of the dye. The spectral variation takes place while preserving the photochemical activity of TMPyp.
Permanent Link: http://hdl.handle.net/11104/0183511