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Degradation of Supramolecular Complexes Photoinduced by Iron(III): The Influence of the Host on the Reactivity of the Guest
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SYSNO ASEP 0181627 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Degradation of Supramolecular Complexes Photoinduced by Iron(III): The Influence of the Host on the Reactivity of the Guest Tvůrce(i) Hykrdová, Lenka (UFCH-W) RID, ORCID
Jirkovský, Jaromír (UFCH-W) RID
Grabner, G. (AT)
Mailhot, G. (FR)
Bolte, M. (FR)Zdroj.dok. Photochemical & Photobiological Sciences - ISSN 1474-905X
Roč. 2, č. 2 (2003), s. 163-170Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova aqueous solution ; molecular recognition ; alkyl radicals Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP ME 396 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA203/99/0763 GA ČR - Grantová agentura ČR GP203/01/D145 GA ČR - Grantová agentura ČR GA203/02/0983 GA ČR - Grantová agentura ČR CEZ AV0Z4040901 - UFCH-W Anotace Fe(III)-photoinduced degradation of two different supramolecular host-guest complexes, naphthalene with alpha-cyclodextrin and 4-chloroaniline with p-sulfonic-calix[4]arene; was studied in aqueous solution. The stoichiometries, equilibrium constants and conformations of these complexes were characterized. In both cases, the degradation of the guest could not be accounted for by simple competition kinetics of OH radical attack on the guest and host molecules, respectively. This observation was explained by the occurrence of subsequent radical reactions of transients resulting from an OH attack onto the host molecule, which are assumed to be able to induce additional degradation reactions of the guest. An inhibiting influence of the calix[4]arene host on the abundance of oligomeric degradation intermediates of 4-chloroaniline was observed. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2004
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