Encapsulation of small molecules by a cavitand porphyrin self-assembled via quadruple hydrogen bonds.
A new and stable quadruple hydrogen-bonded capsule, tetracarboxylcavitand.meso-tetra(2-pyridyl)porphyrin (1 x 2) has been synthesized and spectroscopically characterized. 1 x 2 can encapsulate small molecules of various size from methane to cyclopentane. The guest and host exchange rates were evaluated by EXSY.
Nakazawa
Jun
J
Institute for Materials Chemistry and Engineering, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan.
Mizuki
Maki
M
Shimazaki
Yuichi
Y
Tani
Fumito
F
Naruta
Yoshinori
Y