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pro vyhledávání: '"Kiyohisa Nakamura"'
Autor:
Hiroyuki Furuta, Kiyohisa Nakamura, Fuyuki Ito, Shigeru Itoh, Toshihiko Nagamura, Jang Hyun Ryu, Yutaka Shibata
Publikováno v:
Chemical Physics Letters. 443:274-279
The excited-state dynamics of two expanded porphyrin derivatives which have six pyrrole rings of normal and doubly N-confused types was studied by time-resolved fluorescence and transient absorption measurements. We have found that their dynamics is
Publikováno v:
Journal of Photopolymer Science and Technology. 19:15-19
Confused hexaphyrin derivatives were excited by femtosecond pulsed laser to study transient responses. An extended ?-conjugated system showed characteristic absorption changes with relatively weak power of laser irradiation. Recovery of transient ble
Autor:
Kiyohisa Nakamura, Ildemar Mayer, Alagar Srinivasan, Hiroyuki Furuta, Koiti Araki, Henrique E. Toma
Publikováno v:
Journal of Porphyrins and Phthalocyanines. :813-820
Doubly N -confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag + (0.10 M, in CH3CN) range. Six reversible monoelectronic processes were found suggesting that the rich electroc
Autor:
Kiyohisa Nakamura, Toshihiko Nagamura, Ryuji Matsumoto, Yasuyuki Nagai, Jang Hyun Ryu, Hiroyuki Furuta
Publikováno v:
Molecular Crystals and Liquid Crystals. 445:249/[539]-257/[547]
Confused hexaphyrin derivatives, which are remarkable as the organic optical materials for information processing technology, have been synthesized. Hexaphyrin derivatives, free base type, substitu...