TY - JOUR
T1 - The excited multiplet states of metalloporphyrins and metallophthalocyanines coordinated or linked to nitroxide radicals
AU - Ishii, Kazuyuki
AU - Kobayashi, Nagao
N1 - Funding Information:
This work was partially carried out in Advanced Instrumental Laboratory for Graduate Research of Department of Chemistry, Graduate School of Science, Tohoku University. This work was supported by Grant-in-Aid for Scientific Research on Priority Area ‘Nanoscale Magnetism and Transport’ No. 10130202 and for Encouragement of Young Scientists No. 10740300 from the Ministry of Education, Science, Sports, and Culture, Japan and the Asahi Glass Foundation.
PY - 2000
Y1 - 2000
N2 - We have reviewed several time-resolved electron paramagnetic resonance (TREPR) studies focusing on influences of nitroxide radicals on the photophysical properties of metalloporphyrins and metallophthalocyanines, which are coordinated or linked to nitroxide radicals. This paper summarizes TREPR studies on the excited multiplet states of metalloporphyrins and metallophthalocyanines coordinated by several kinds of nitroxide radicals, where the excited doublet and quartet states generated by the interaction between the excited triplet chromophore and doublet radical have been analyzed in detail. Selective population from the excited multiplet states to the triplet ground state is also discussed for phthalocyaninatosilicon covalently linked to two TEMPO radicals in terms of a new concept for controlling magnetic properties by photoexcitation.
AB - We have reviewed several time-resolved electron paramagnetic resonance (TREPR) studies focusing on influences of nitroxide radicals on the photophysical properties of metalloporphyrins and metallophthalocyanines, which are coordinated or linked to nitroxide radicals. This paper summarizes TREPR studies on the excited multiplet states of metalloporphyrins and metallophthalocyanines coordinated by several kinds of nitroxide radicals, where the excited doublet and quartet states generated by the interaction between the excited triplet chromophore and doublet radical have been analyzed in detail. Selective population from the excited multiplet states to the triplet ground state is also discussed for phthalocyaninatosilicon covalently linked to two TEMPO radicals in terms of a new concept for controlling magnetic properties by photoexcitation.
KW - Metallophthalocyanine
KW - Metalloporphyrin
KW - Nitroxide radical
KW - Time-resolved EPR
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U2 - 10.1016/S0010-8545(99)00192-7
DO - 10.1016/S0010-8545(99)00192-7
M3 - Review article
AN - SCOPUS:0033829945
VL - 198
SP - 231
EP - 250
JO - Coordination Chemistry Reviews
JF - Coordination Chemistry Reviews
SN - 0010-8545
IS - 1
ER -