Počet záznamů: 1

Spectroscopic, Morphological, and Mechanistic Investigation of the Solvent-Promoted Aggregation of Porphyrins Modified in meso-Positions by Glucosylated Steroids

  1. 1.
    0369950 - UEB-Q 2012 RIV DE eng J - Článek v odborném periodiku
    Zelenka, K. - Trnka, T. - Tišlerová, I. - Monti, D. - Cinti, S. - Naitana, M. L. - Schiaffino, L. - Venanzi, M. - Laguzzi, G. - Luvidi, L. - Mancini, G. - Nováková, Z. - Šimák, O. - Wimmer, Zdeněk - Drašar, P.
    Spectroscopic, Morphological, and Mechanistic Investigation of the Solvent-Promoted Aggregation of Porphyrins Modified in meso-Positions by Glucosylated Steroids.
    Chemistry - A European Journal. Roč. 17, č. 49 (2011), s. 13743-13753 ISSN 0947-6539
    Grant CEP: GA MŠk 2B06024
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: aggregation * chirality * porphyrinoids
    Kód oboru RIV: CC - Organická chemie
    Impakt faktor: 5.925, rok: 2011

    Solvent-driven aggregation of a series of porphyrin derivatives was studied by UV/Vis and circular dichroism spectroscopy. The porphyrins are characterised by the presence in the meso positions of steroidal moieties further conjugated with glucosyl groups. The presence of these groups makes the investigated macrocycles amphiphilic and soluble in aqueous solvent, namely, dimethyl acetamide/water. Aggregation of the macrocycles is triggered by a change in bulk solvent composition leading to formation of large architectures that express supramolecular chirality, steered by the presence of the stereogenic centres on the periphery of the macrocycles. The aggregation behaviour and chiroptical features of the aggregates are strongly dependent on the number of moieties decorating the periphery of the porphyrin framework. In particular, experimental evidence indicates that the structure of the steroid linker dictates the overall chirality of the supramolecular architectures.
    Trvalý link: http://hdl.handle.net/11104/0203890
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