Chemistry Reference
In-Depth Information
Fig. 10 Molecular structures of (a)2C
60
-2Zn porphyrins and (b) perylene covalently linked with
aC
60
derivative
fullerene/P
3
HT/ODA/aluminum, where ODA layers were used as insulator.
According to the proposed model, the lateral charge diffusion in the donor cation
and acceptor anion sublayers prolonged the charge recombination time of more
than 9 orders of magnitude (from hundreds of picoseconds to hundreds of
milliseconds), if compared with the compounds in solution.
Multicomponent organic molecular films with oriented porphyrin-fullerene
dyad and polymers and molecules such as phthalocyanines and imides were used
by Lemmetyinen and his research group in order to promote both energy and
electron transfer toward the porphyrin moieties of the fullerene-porphyrin dyads
or as final electron acceptor from C
60
radical anion [
30
-
32
]. The presence of these
intermediates causes an increase of the lifetime and of the efficiency of the charge
