Efficient Anion Binding to Cerium(IV) Bis(porphyrinate) Double Decker Utilizing Positive Homotropic Allosterism

Efficient Anion Binding to Cerium(IV) Bis(porphyrinate) Double Decker Utilizing Positive Homotropic Allosterism

New cerium(IV) bis(porphyrinate) double decker bearing two pairs of anion binding sites was synthesized. This anion receptor can bind dianionic tartarate guest according to positive homotropic allosterism. Analysis using the Hill equation afforded log K (association constant) = 9.33 [(mol dm−3)−2] a...

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Veröffentlicht in:Chemistry letters 2001-06, Vol.30 (6), p.520-521
Hauptverfasser: Yamamoto, Masashi, Sugasaki, Atsushi, Ikeda, Masato, Takeuchi, Masayuki, Frimat, Karine, James, Tony D, Shinkai, Seiji
Format: Artikel
Sprache:eng
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Zusammenfassung:New cerium(IV) bis(porphyrinate) double decker bearing two pairs of anion binding sites was synthesized. This anion receptor can bind dianionic tartarate guest according to positive homotropic allosterism. Analysis using the Hill equation afforded log K (association constant) = 9.33 [(mol dm−3)−2] and n (Hill coefficient) = 2.1 (± 0.1). This is the first example where “static” anion binding has been combined with the “dynamic” allosteric system.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2001.520