Cooperative C60 Binding to a Porphyrin Tetramer Arranged around a p-Terphenyl Axis in 1:2 Host−Guest Stoichiometry
- 22 February 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 4 (6) , 925-928
- https://doi.org/10.1021/ol017299q
Abstract
Porphyrin tetramer 1 was newly designed and synthesized to construct a novel cooperative [60]fullerene (C60) 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 C60 to produce a 1:2 1/C60 complex with association constants of 5800 M-1 (K1) and 2000 M-1 (K2). These values are significantly greater than those for control porphyrin dimers such as 2 and 3.Keywords
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