Photoinduced electron transfer in solid C60 donor/acceptor complexes

Konarev, Dmitri V.; Zerza, G.; Scharber, Markus C.; Sariciftci, Niyazi Serdar; Lyubovskaya, R.N.

doi:10.1016/s0379-6779(00)00972-3

Cited by 18 publications

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“…The signals were not saturated until highest available microwave power (200 mW) and disappeared below 20 mW microwave power. It is known (35,36) that the ESR signal of the C Àd 60 radical anion (35,36) has g-factor of 1.996-2.000 with DH 20-50 G at room temperature and is narrowed to 4-10 G with the temperature decrease down to 77 K The LESR signals observed in 1 and 10 have the same parameters at 100 K and, therefore, can be attributed to the C Àd 60 radical anions (9). The dependencies of the LESR signal intensity on the photon energy for 1 and 10 are shown in Fig.…”

Section: Photoexcitation Of the Complexes Lesr-spectramentioning

confidence: 99%

“…, where d is close to 0(I) We studied PIET in complexes 1 and 10 by LESR spectroscopy (9). Photoexcitation of the complexes was carried out using white light (400-900 nm) at 100 K. At photoexcitation of 1 and 10, the LESR signals with g=1.9984-1.9992 and DH=3.9-4.2 G appeared (Fig.…”

Section: Photoexcitation Of the Complexes Lesr-spectramentioning

confidence: 99%

“…Unique photoacceptor properties of fullerenes allow generation of relatively long-lived charge-separated states with high quantum yields under photoexcitation of conjugated polymers and other chromophore molecules in the presence of C 60 (4)(5)(6). Molecular complexes of fullerenes with chromophore molecules of zinc tetraphenylporphyrin, (7,8) bianthrone (9) and some amines (9) in the solid state may also be promising in the study of PIET. However, PIET in the fullerene complexes with amines has been studied up to now mainly in solutions (10)(11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

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Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines

Konarev

Kovalevsky

Litvinov

et al. 2002

Journal of Solid State Chemistry

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Section: Photoexcitation Of the Complexes Lesr-spectramentioning

confidence: 99%

Section: Photoexcitation Of the Complexes Lesr-spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines

Konarev

Kovalevsky

Litvinov

et al. 2002

Journal of Solid State Chemistry

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“…The LESR signals were observed in the C 60 complexes with Leuco Crystal Violet, LCV Á C 60 Á C 6 H 5 Cl (1), N,N,N 0 ,N 0 -tetramethyl-p-phenylenediamine, TMPDA Á C 60 (2); and bianthrone, (BA) 2 C 60 (3). Preliminary data for the study of PIET in these complexes was published previously [35]. In this work we present microwave power studies for the LESR signals.…”

Section: Introductionmentioning

confidence: 72%

Photoinduced Electron Transfer in Solid C₆₀Donor/Acceptor Complexes Studied by Light-Induced Electron-Spin Resonance

Konarev

Lyubovskaya

Zerza

et al. 2005

Molecular Crystals and Liquid Crystals

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Light-induced ESR (LESR) spectroscopy was used to study photoinduced electron transfer (PIET) in the crystals of the C 60 donor=acceptor complexes. High-field LESR signals attributed to C À 60 (g ¼ 1.9984 À 1.9992 and DH ¼ 3 À 6 G at 100 K) were observed in fullerene complexes with Leuco Crystal Violet (LCVÁC 60 ÁC 6 H 5 Cl, 1), N,N,N 0 ,N 0 -tetramethyl-p-phenylenediamine (TMPDAÁC 60 , 2), and bianthrone ((BA) 2 C 60 , 3), whereas a low-field LESR signal in 2 was attributed to TMPDA . þ . Microwave power studies reveal two independent spins in 2 and show high relaxation rates for photoinduced spins on C À 60 . The LESR signals consist of a major long-lived ''persistent'' component and a minor ''prompt'' one, which disappears immediately after light is off. The maximal intensity of the LESR signals was observed for the excitation of 1-3 below 2 eV. This range of photon energy corresponds to direct intermolecular charge transfer from donor to C 60 molecules. PIET is temperature activated with E a ¼ 23, 43 and 49 meV for 1, 2, and 3, respectively. Photoinduced spin susceptibility attains the maximum at 30 K in 1 and decreases with temperature down to 4 K indicating a possible The 3=[315]antiferromagnetic interaction of spins, while in 2 it increases with the temperature decrease down to 4 K.

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“… Photoconductivity spectrum of TMPDA · C 60 . The insert shows the absorption spectrum of this molecular complex 4. …”

Section: Resultsmentioning

confidence: 99%

On the photoconductivity of layered molecular complex of fullerene C₆₀ with saturated amine TMPDA

Golovin

Lopatin

Rodaev

et al. 2006

Physica Rapid Research Ltrs

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Photoinduced electron transfer in solid C60 donor/acceptor complexes

Cited by 18 publications

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Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines

Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines

Photoinduced Electron Transfer in Solid C₆₀Donor/Acceptor Complexes Studied by Light-Induced Electron-Spin Resonance

On the photoconductivity of layered molecular complex of fullerene C₆₀ with saturated amine TMPDA

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Photoinduced electron transfer in solid C60 donor/acceptor complexes

Cited by 18 publications

References 0 publications

Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines

Molecular Complexes of Fullerenes C60 and C70 with Saturated Amines