Photoinduced charge transfer and electrochemical properties of triphenylamine I(h)-Sc3N@C80 donor-acceptor conjugates.

ABSTRACT: Two isomeric [5,6]-pyrrolidine-I(h)-Sc(3)N@C(80) electron donor-acceptor conjugates containing triphenylamine (TPA) as the donor system were synthesized. Electrochemical and photophysical studies of the novel conjugates were made and compared with those of their C(60) analogues, in order to determine (i) the effect of the linkage position (N-substituted versus 2-substituted pyrrolidine) of the donor system in the formation of photoinduced charge separated states, (ii) the thermal stability toward the retro-cycloaddition reaction, and (iii) the effect of changing C(60) for I(h)-Sc(3)N@C(80) as the electron acceptor. It was found that when the donor is connected to the pyrrolidine nitrogen atom, the resulting dyad produces a significantly longer lived radical pair than the corresponding 2-su

SUBMITTER: Pinzon JR 

PROVIDER: S-EPMC2757325 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature