TY - JOUR
T1 - Near infra-red emission of charge-transfer complexes of porphyrin-fullerene films
AU - Tkachenko, Nikolay V.
AU - Guenther, Claudia
AU - Imahori, Hiroshi
AU - Tamaki, Koichi
AU - Sakata, Yoshiteru
AU - Fukuzumi, Shunichi
AU - Lemmetyinen, Helge
N1 - Funding Information:
This work was supported by the National Programme on Material and Structure Research, Academy of Finland, by the Nanotechnology Programme, Technology Development Centre of Finland, and by Grant-in-Aids for COE Research and Scientific Research on Priority Area of Electrochemistry of Ordered Interfaces and Creation of Delocalized Electronic Systems, from Ministry of Education, Science, Sports and Culture, Japan. Y.S. thanks the Mitsubishi Foundation for financial support.
PY - 2000/8/18
Y1 - 2000/8/18
N2 - Solid porphyrin-fullerene films were prepared by evaporating a mixture of porphyrin and fullerene in solution and by deposition of Langmuir-Blodgett films where the dyes were covalently linked to each other. Both types of the films exhibited an emission band shifted to the near infrared region, ca. 800 nm, where neither porphyrin nor fullerene emits alone nor mixed in solution. The emission is attributed to an emitting charge transfer (CT) state formed by porphyrin and fullerene moieties. It is characterized by a long lifetime, ca. 2 ns, and high quantum yield, 0.14%. Remarkably small total reorganization energies, less than 0.2 eV, are deduced from the CT emission spectra of the porphyrin-fullerene films.
AB - Solid porphyrin-fullerene films were prepared by evaporating a mixture of porphyrin and fullerene in solution and by deposition of Langmuir-Blodgett films where the dyes were covalently linked to each other. Both types of the films exhibited an emission band shifted to the near infrared region, ca. 800 nm, where neither porphyrin nor fullerene emits alone nor mixed in solution. The emission is attributed to an emitting charge transfer (CT) state formed by porphyrin and fullerene moieties. It is characterized by a long lifetime, ca. 2 ns, and high quantum yield, 0.14%. Remarkably small total reorganization energies, less than 0.2 eV, are deduced from the CT emission spectra of the porphyrin-fullerene films.
UR - http://www.scopus.com/inward/record.url?scp=0001680137&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(00)00765-X
DO - 10.1016/S0009-2614(00)00765-X
M3 - Article
AN - SCOPUS:0001680137
SN - 0009-2614
VL - 326
SP - 344
EP - 350
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -