Photoinduced Electron Transfer from a Conducting Polymer to Buckminsterfullerene

American Association for the Advancement of Science (AAAS) - Tập 258 Số 5087 - Trang 1474-1476 - 1992
Niyazi Serdar Sariçiftçi1, Laura Smilowitz1, A. J. Heeger1, Fred Wudl1
1Institute for Polymers and Organic Solids, University of California, Santa Barbara, CA 93105

Tóm tắt

Evidence for photoinduced electron transfer from the excited state of a conducting polymer onto buckminsterfullerene, C 60 , is reported. After photo-excitation of the conjugated polymer with light of energy greater than the π- π* gap, an electron transfer to the C 60 molecule is initiated. Photoinduced optical absorption studies demonstrate a different excitation spectrum for the composite as compared to the separate components, consistent with photo-excited charge transfer. A photoinduced electron spin resonance signal exhibits signatures of both the conducting polymer cation and the C 60 anion. Because the photoluminescence in the conducting polymer is quenched by interaction with C 60 , the data imply that charge transfer from the excited state occurs on a picosecond time scale. The charge-separated state in composite films is metastable at low temperatures.

Từ khóa


Tài liệu tham khảo

ABOGAST, J.W., J PHYS CHEM-US 95: 11 (1991).

ALLEMAND, P.M., 2 DIFFERENT FULLERENES HAVE THE SAME CYCLIC VOLTAMMETRY, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 113: 1050 (1991).

ALLEMAND, P.M., THE UNUSUAL ELECTRON-SPIN-RESONANCE OF FULLERENE C60.-, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 113: 2780 (1991).

10.1126/science.253.5017.301

Bredas J. L. Conjugated Polymeric Materials: Opportunities in Electronics Optoelectronics and Molecular Electronics (1990).

Carter F. L. Molecular Electronic Devices 1 (1982).

Carter F. L. Molecular Electronic Devices 2 (1987).

Fox M. A. Photoinduced Electron Transfer Parts A and D (1988).

GUSTAFSSON, G, FLEXIBLE LIGHT-EMITTING-DIODES MADE FROM SOLUBLE CONDUCTING POLYMERS, NATURE 357: 477 (1992).

10.1038/350320a0

Halvorson, C., Chemical Physics Letters 200: 364 (1992).

10.1038/350600a0

10.1103/RevModPhys.60.781

KRATSCHMER, W, SOLID C-60 - A NEW FORM OF CARBON, NATURE 347: 354 (1990).

KROTO, H.W., C60 - BUCKMINSTERFULLERENE, CHEMICAL REVIEWS 91: 1213 (1991).

KROTO, H.W., C-60 - BUCKMINSTERFULLERENE, NATURE 318: 162 (1985).

Lu Y. Solitons and Polarons in Conducting Polymers (1988).

MacDiarmid, A. G., Handbook of Conducting Polymers 1: 689 (1986).

Mehring, M., Electronic Properties of Conjugated Polymers III: 242 (1989).

MILLER, B, PHOTOELECTROCHEMICAL BEHAVIOR OF C60 FILMS, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 113: 6291 (1991).

MORITA, S, DOPING EFFECT OF BUCKMINSTERFULLERENE IN CONDUCTING POLYMER - CHANGE OF ABSORPTION-SPECTRUM AND QUENCHING OF LUMINESCENCE, SOLID STATE COMMUNICATIONS 82: 249 (1992).

NAARMANN, H, SYNTHETIC METALS 22: 1 (1987).

ONEIL, M.P., PICOSECOND OPTICAL SWITCHING BASED ON BIPHOTONIC EXCITATION OF AN ELECTRON DONOR-ACCEPTOR-DONOR MOLECULE, SCIENCE 257: 63 (1992).

PICHLER, T, ELECTRONIC-TRANSITIONS IN KXC60 (0 LESS-THAN-OR-EQUAL-TO X LESS-THAN-OR-EQUAL-TO 6) FROM INSITU ABSORPTION-SPECTROSCOPY, SOLID STATE COMMUNICATIONS 81: 859 (1992).

SARICIFTCI, N.S., ON THE SPIN DISTRIBUTION IN BRIDGED ANTHRACENE VIOLOGEN MOLECULES - AN ELECTRON NUCLEAR DOUBLE-RESONANCE STUDY, MOLECULAR PHYSICS 75: 1259 (1992).

SARICIFTCI N.S. unpublished data.

Skotheim T. A. Handbook of Conducting Polymers 1 (1986).

Skotheim T. A. Handbook of Conducting Polymers 2 (1986).

SMILOWITZ, L, PHOTOINDUCED ABSORPTION FROM TRIPLET EXCITATIONS IN POLY(2-METHOXY, 5-(2'-ETHYL-HEXYLOXY)-P-PHENYLENE VINYLENE) ORIENTED BY GEL-PROCESSING IN POLYETHYLENE, SYNTHETIC METALS 48: 193 (1992).

SMILOWITZ L unpublished data.

SRDANOV, V.I., ABSORPTION-SPECTRA AND ELECTRONIC-PROPERTIES OF ALKALI-METAL-DOPED C-60, CHEMICAL PHYSICS LETTERS 192: 243 (1992).

VOSS, K.F., SUBSTITUTION EFFECTS ON BIPOLARONS IN ALKOXY DERIVATIVES OF POLY(1,4-PHENYLENE-VINYLENE), PHYSICAL REVIEW B 43: 5109 (1991).

WASIELEWSKI, M.R., PHOTOINDUCED ELECTRON-TRANSFER IN MESO-TRIPHENYLTRIPTYCENYLPORPHYRIN QUINONES - RESTRICTING DONOR-ACCEPTOR DISTANCES AND ORIENTATIONS, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 106: 5043 (1984).

WASIELEWSKI, M.R., DEPENDENCE OF RATE CONSTANTS FOR PHOTOINDUCED CHARGE SEPARATION AND DARK CHARGE RECOMBINATION ON THE FREE-ENERGY OF REACTION IN RESTRICTED-DISTANCE PORPHYRIN QUINONE MOLECULES, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 107: 1080 (1985).

Wudl, F., Materials for Non-Linear Optics: Chemical Perspectives: 683 (1991).

Thông tin
Thông tin xuất bản

American Association for the Advancement of Science (AAAS)

Tập 258 Số 5087

1474-1476

Thông tin tác giả