Počet záznamů: 1

Charge transfer in porphyrin–calixarene complexes: ultrafast kinetics, cyclic voltammetry, and DFT calculations

  1. 1.
    0358798 - UFCH-W 2012 RIV GB eng J - Článek v odborném periodiku
    Kubát, Pavel - Šebera, Jakub - Záliš, Stanislav - Langmaier, Jan - Fuciman, M. - Polívka, T. - Lang, Kamil
    Charge transfer in porphyrin–calixarene complexes: ultrafast kinetics, cyclic voltammetry, and DFT calculations.
    Physical Chemistry Chemical Physics. Roč. 13, č. 15 (2011), s. 6947-6954 ISSN 1463-9076
    Grant CEP: GA ČR GAP208/10/1678; GA ČR GA203/09/0691
    Výzkumný záměr: CEZ:AV0Z40400503; CEZ:AV0Z40320502
    Klíčová slova: porphyrin-calixarene complexes * voltammetry * DFT calculations
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie; CA - Anorganická chemie (UACH-T)
    Impakt faktor: 3.573, rok: 2011

    Transient absorption spectroscopy, cyclic voltammetry, and DFT calculations were used to describe charge transfer processes in a series of 5,10,15,20-tetrakis(N-methylpyridinium-n-yl) porphyrins (TMPyPn, n = 4,3,2) and TMPyPn/p-sulfonatocalix[m]arene (clxm, m = 4,6,8) complexes. Excitation of TMPyPn is accompanied by an increasing electron density at the methylpyridinium substituents in the order TMPyP2 < TMPyP3 < TMPyP4. The quenching of the excited singlet states of the complexes increases with the number of ionized phenolic groups of clxm and can be correlated with the partial transfer of the electron density from O− to the peripheral methylpyridinium substituents rather than to the porphyrin ring.
    Trvalý link: http://hdl.handle.net/11104/0196732