COMPLEXATION OF FULLERENEADDUCTSOF PYRIDINE OR IMIDAZOLE BY WATER-SOLUBLE ZINC PORPHYRINSIN THE LANGMUIR AND LANGMUIR-BLODGETT FILMS

摘要

Langmuir films of the C60-pyridine, Copy, and Coo-imidazole, C6oim, adducts were formed on surfaces of aqueous subphases, like pure water or water solution of tetrakis (N-methylpyridinium)porphyrin cation, Zn(TMPyP), or zinc tetrakis (4-sulfonatophenyl)porphyrin anion, Zn(TPPS). The C60 adducts (acceptors) self-assembled in the films, due to axial ligation of Zn porphyrins (donors), to form donor-acceptor dyads. The Langmuir films were characterized by compression isotherms and in situ Brewster angle microscopy. Aggregated "expanded liquid" Langmuir films were formed for all the dyad systems examined. The Langmuir-Blodgett (LB) films of the dyads were relatively stable. The UV-vis spectroscopy measurements revealed that the water-soluble Zn porphyrins were transferred together with the C60 adducts in the LB films. The LB transfer efficiency increased in the order: C6opy-Zn(TPPS)