Porphyrins intercalated in Zn/Al and Mg/Al layered double hydroxides: properties and structural arrangement

0346803 - ÚACH 2011 RIV US eng J - Journal Article
Káfuňková, Eva - Taviot-Guého, Ch. - Bezdička, Petr - Klementová, Mariana - Kovář, P. - Kubát, Pavel - Mosinger, Jiří - Pospíšil, M. - Lang, Kamil
Porphyrins intercalated in Zn/Al and Mg/Al layered double hydroxides: properties and structural arrangement.
Chemistry of Materials. Roč. 22, č. 8 (2010), s. 2481-2490. ISSN 0897-4756. E-ISSN 1520-5002
R&D Projects: GA ČR GA203/07/1424; GA ČR GAP207/10/1447
Institutional research plan: CEZ:AV0Z40320502; CEZ:AV0Z40400503
Keywords : hydrotalcite-like compounds * molecular-dynamic simulations * photophysical properties
Subject RIV: CA - Inorganic Chemistry
Impact factor: 6.400, year: 2010

The arrangement of porphyrin molecules in the interlayer space of layered double hydroxides (LDH) has been studied by a combination of experimental techniques and molecular dynamics simulations. Intercalation of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrins (TPPS) into ZnRAl and MgRAl LDH hosts led to a gallery height of about 15.5 angstrom that is comparable with the size of the porphyrin molecules. The porphyrin sulfonate groups arc located at about 4 angstrom from the center of the hydroxide layers that is consistent with hydrogen bonding interactions between the sulfonate groups and OH groups of the layers. The aromatic ring system in the middle of the gallery is rather disordered A large number of in-plane diffraction lines suggests that the rigidity of the porphyrin framework has a beneficial effect on the layer ordering.
Permanent Link: http://hdl.handle.net/11104/0187729