Cooperative C 60 Binding to a Porphyrin Tetramer Arranged around a p -Terphenyl Axis in 1:2 Host−Guest Stoichiometry
2002; American Chemical Society; Volume: 4; Issue: 6 Linguagem: Inglês
10.1021/ol017299q
ISSN1523-7060
AutoresYohei Kubo, Atsushi Sugasaki, Masato Ikeda, Kazunori Sugiyasu, Kenshi Sonoda, Atsushi Ikeda, Masayuki Takeuchi, Seiji Shinkai,
Tópico(s)Synthesis and Properties of Aromatic Compounds
Resumo[structure: see text] Porphyrin tetramer 1 was newly designed and synthesized to construct a novel cooperative [60]fullerene (C(60)) binding system. Compound 1 has a p-terphenyl axis, which is expected to act as a scaffold for a guest-binding information transducer. In toluene, 1 can bind 2 equiv of C(60) to produce a 1:2 1/C(60) complex with association constants of 5800 M(-1) (K(1)) and 2000 M(-1) (K(2)). These values are significantly greater than those for control porphyrin dimers such as 2 and 3.
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