Heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin a pH=7.0 aqueous solution binds meso-tetrakis(4-carboxyphenyl) porphyrin and its zinc complex to yield 2:1 complexes with exceptionally high binding constants. The made of binding, involving the inclusion of two opposite aryl groups in the cyclodextrin cavity, is clearly defined by a detailed NMR analysis.
Very strong binding and mode of complexation of water-soluble porphyrins with a permethylated beta-cyclodextrin
CAROFIGLIO, TOMMASO;FORNASIER, ROBERTO;TONELLATO, UMBERTO
1996
Abstract
Heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin a pH=7.0 aqueous solution binds meso-tetrakis(4-carboxyphenyl) porphyrin and its zinc complex to yield 2:1 complexes with exceptionally high binding constants. The made of binding, involving the inclusion of two opposite aryl groups in the cyclodextrin cavity, is clearly defined by a detailed NMR analysis.
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