Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution

Jun ichi Fujisawa; Yasunori Ohba; Seigo Yamauchi

doi:10.1016/S0009-2614(97)01191-3

Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution

Jun ichi Fujisawa, Yasunori Ohba, Seigo Yamauchi

Division of Measurements

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Time-resolved electron paramagnetic resonance (EPR) has been used to investigate electron spin polarization transfer in triplet-triplet (T-T) energy transfer between porphyrins (MOEP and MTPP; M=H₂, Zn) and fullerene (C₆₀) in toluene solution. EPR spectra of excited triplet (T₁) states of both a donor (porphyrins) and an acceptor (C₆₀) were directly observed. The induced spin polarizations of T₁ C₆₀ were found to be the same as those of T₁ porphyrins. From the analyses of time-profiles of both triplet signals, it was shown that T₁ polarizations of porphyrins are transferred to T₁ fullerene with conservation of spin polarizations via T-T energy transfer.

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Chemical Physics Letters
Volume	282
Issue number	2
DOIs	https://doi.org/10.1016/S0009-2614(97)01191-3
Publication status	Published - 1998 Jan 9

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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title = "Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution",

abstract = "Time-resolved electron paramagnetic resonance (EPR) has been used to investigate electron spin polarization transfer in triplet-triplet (T-T) energy transfer between porphyrins (MOEP and MTPP; M=H2, Zn) and fullerene (C60) in toluene solution. EPR spectra of excited triplet (T1) states of both a donor (porphyrins) and an acceptor (C60) were directly observed. The induced spin polarizations of T1 C60 were found to be the same as those of T1 porphyrins. From the analyses of time-profiles of both triplet signals, it was shown that T1 polarizations of porphyrins are transferred to T1 fullerene with conservation of spin polarizations via T-T energy transfer.",

author = "Fujisawa, {Jun ichi} and Yasunori Ohba and Seigo Yamauchi",

note = "Funding Information: This work was supported by Grant-in-Aid for Scientific Research on Priority Area `Photoreaction Dynamics' No. 08218206 from the Ministry of Education, Science and Culture, Japan.",

year = "1998",

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doi = "10.1016/S0009-2614(97)01191-3",

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pages = "181--186",

journal = "Chemical Physics Letters",

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T1 - Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution

AU - Fujisawa, Jun ichi

AU - Ohba, Yasunori

AU - Yamauchi, Seigo

N1 - Funding Information: This work was supported by Grant-in-Aid for Scientific Research on Priority Area `Photoreaction Dynamics' No. 08218206 from the Ministry of Education, Science and Culture, Japan.

PY - 1998/1/9

Y1 - 1998/1/9

N2 - Time-resolved electron paramagnetic resonance (EPR) has been used to investigate electron spin polarization transfer in triplet-triplet (T-T) energy transfer between porphyrins (MOEP and MTPP; M=H2, Zn) and fullerene (C60) in toluene solution. EPR spectra of excited triplet (T1) states of both a donor (porphyrins) and an acceptor (C60) were directly observed. The induced spin polarizations of T1 C60 were found to be the same as those of T1 porphyrins. From the analyses of time-profiles of both triplet signals, it was shown that T1 polarizations of porphyrins are transferred to T1 fullerene with conservation of spin polarizations via T-T energy transfer.

AB - Time-resolved electron paramagnetic resonance (EPR) has been used to investigate electron spin polarization transfer in triplet-triplet (T-T) energy transfer between porphyrins (MOEP and MTPP; M=H2, Zn) and fullerene (C60) in toluene solution. EPR spectra of excited triplet (T1) states of both a donor (porphyrins) and an acceptor (C60) were directly observed. The induced spin polarizations of T1 C60 were found to be the same as those of T1 porphyrins. From the analyses of time-profiles of both triplet signals, it was shown that T1 polarizations of porphyrins are transferred to T1 fullerene with conservation of spin polarizations via T-T energy transfer.

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Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution

Abstract

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