TY - JOUR
T1 - Porphyrin-fullerene dyad with a long linker
T2 - Formation of charge transfer conformer in Langmuir-Blodgett film
AU - Tkachenko, Nikolai V.
AU - Vehmanen, Visa
AU - Nikkanen, Juha Pekka
AU - Yamada, Hiroko
AU - Imahori, Hiroshi
AU - Fukuzumi, Shunichi
AU - Lemmetyinen, Helge
N1 - Funding Information:
This work was supported by the Academy of Finland, the National Technology Agency of Finland and Grant-in-Aids (No. 11740352 to H.I., Nos. 11555230 and 11694079 to S.F.) and the Development of Innovative Technology (No. 12310) from Ministry of Education, Science, Sports and Culture, Japan. H.I. thanks the Nagase Foundation for financial support.
PY - 2002/12/10
Y1 - 2002/12/10
N2 - A porphyrin-fullerene covalently linked dyad is studied in solutions and Langmuir-Blodgett (LB) films. The dyad is characterized by a relatively long linker. In benzonitrile, it performs a relatively slow photo-induced electron transfer (ET), kET ≈ 5 × 108 s-1. Being incorporated in an LB film the dyad forms a compact conformer, which takes the smallest surface area. For this conformer the donor-acceptor separation is much shorter as compared with that in liquid phases and the molecule perform a fast photo-induced ET, kET ≈ 8 × 109 s-1. The LB films were studied using time-resolved measurements of fluorescence, absorption, and Maxwell displacement charge.
AB - A porphyrin-fullerene covalently linked dyad is studied in solutions and Langmuir-Blodgett (LB) films. The dyad is characterized by a relatively long linker. In benzonitrile, it performs a relatively slow photo-induced electron transfer (ET), kET ≈ 5 × 108 s-1. Being incorporated in an LB film the dyad forms a compact conformer, which takes the smallest surface area. For this conformer the donor-acceptor separation is much shorter as compared with that in liquid phases and the molecule perform a fast photo-induced ET, kET ≈ 8 × 109 s-1. The LB films were studied using time-resolved measurements of fluorescence, absorption, and Maxwell displacement charge.
UR - http://www.scopus.com/inward/record.url?scp=0037058691&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(02)01592-0
DO - 10.1016/S0009-2614(02)01592-0
M3 - Article
AN - SCOPUS:0037058691
SN - 0009-2614
VL - 366
SP - 245
EP - 252
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -