TY - JOUR
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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U2 - 10.1016/S0009-2614(97)01191-3
DO - 10.1016/S0009-2614(97)01191-3
M3 - Article
AN - SCOPUS:0032497987
VL - 282
SP - 181
EP - 186
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 2
ER -