Acid/base controllable molecular switch based on a neutral phenanthroline guest penetrated pseudorotaxane.
A ditopic macrocycle with a bisamide and a half dibenzo-crown ether component has been newly synthesized and its complexation behavior toward neutral phenanthroline derivatives is reported. The macrocycle can bind phenanthroline derivatives very strongly by hydrogen bonding and pi-electron interaction, yielding pseudorotaxane structures. The inclusion complexes show a pH controllable reversible threading-dethreading molecular switching system.
Muraoka
Masahiro
M
Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, Ohmiya, Asahi-ku, Osaka 535-8585, Japan. muraoka@chem.oit.ac.jp
Irie
Hiromitsu
H
Nakatsuji
Yohji
Y