Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Tomohiro Miyatake"'
Autor:
Toranosuke Tomikawa, Yuichi Kitagawa, Koki Yoshioka, Kei Murata, Tomohiro Miyatake, Yasuchika Hasegawa, Kazuyuki Ishii
Publikováno v:
Journal of Materials Chemistry C. 11:2831-2835
Using zinc-chlorin, the switching of MCPL/CPL via J-aggregation has been clearly demonstrated for the first time.
Publikováno v:
Langmuir. 35:7242-7248
Controlling the supramolecular organization of pigment molecules will provide innovative materials that exhibit variable optical properties. In nature, photosynthetic systems employ chlorophyllous supramolecules in which each pigment molecule is suit
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 353:612-617
Green photosynthetic bacteria have extramembranous light-harvesting complexes called chlorosomes. Light-energy captured by bacteriochlorophyll (BChl) self-aggregates inside chlorosomes is transferred to BChl a -peptide complexes called baseplates on
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 353:654-660
Self-aggregates of zinc 31-hydroxy-chlorins were prepared in a polydimethylsiloxane (PDMS) oil. The artificial self-aggregates provided a similar chlorophyllous aggregate found in light-harvesting antennas of green photosynthetic bacteria. The zinc c
Autor:
Juan Du, Yuxin Leng, Takayoshi Kobayashi, Hitoshi Tamiaki, Tomohiro Miyatake, Xin Xing, Wei Yuan
Publikováno v:
Chemical Physics Letters. 683:154-159
By real-time vibrational spectroscopy using 6.8 fs pulses, real-time vibronic coupling in stair-like zinc chlorin aggregates was studied. Besides the observed fast excitonic relaxation, amplitudes of coherent molecular vibrations are found to be line
Publikováno v:
Chemical Physics Letters. 674:38-41
A system for measuring magneto-chiral dichroism (MChD) under strong magnetic fields using a pulsed electromagnet was constructed. We succeeded in observing a relatively intense MChD signal for chiral J-aggregates of a zinc chlorin at 5 T using this m
Publikováno v:
Tetrahedron. 73:313-321
Chlorophyll- a was chemically modified to methyl pyropheophorbides- a possessing 3,8-diethyl, 3-vinyl-8-ethyl, 3-ethyl-8-vinyl, and 3,8-divinyl groups. Analogous 3-ethyl-7-vinyl- and 3,7-divinyl-chlorins were prepared by derivatization of chlorophyll
Publikováno v:
Tetrahedron. 72:4368-4376
Regioisomeric 3- and 8-vinylchlorins as well as 7- and 12-vinylchlorins were prepared by modifying naturally occurring chlorophylls-a and/or b. The corresponding formylchlorins were synthesized by oxidation of the 3/8-vinyl, 7-hydroxymethyl or 12-met
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 26:3034-3037
Wittig reaction of methyl pyropheophorbide-d possessing the 3-formyl group gave readily methyl pyropheophorbides-a bearing a variety of 3-alkenyl groups as semi-synthetic models of chlorophyll-a. The 3-substituents rotated around the C3-C3(1) bond fr
Publikováno v:
Tetrahedron. 72:3477-3489
Methyl 3-acyl-pyropheophorbides-a were prepared by modification of naturally occurring chlorophyll-a through Grignard or Barbier reactions of the 3-formyl group and successive Ley–Griffith or Dess–Martin oxidations of the resulting secondary alco