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Laser flash photolysis studies on radical formation by H-atom abstraction of triplet vitamin K3 and by H-atom transfer via the triplet exciplex between triplet methyldihydroxynaphthalene and benzophenone

Autor: Iwao Amada, Haruo Shizuka, Minoru Yamaji, Masami Sase

Publikováno v: Research on Chemical Intermediates. 23:121-134

Nanosecond laser photolysis techniques were incorporated to obtain (1) the absorption spectra and coefficients of triplet vitamin K3 (2-methyl-1,4-naphthoquinone, MNQ) and its ketyl radical (2-methylnaphthosemiquinone, 2MNQH*) in acetonitrile (ACN) a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a56760a80e3b737ce867d4401b886bfe
https://doi.org/10.1163/156856797x00277

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Laser photolysis studies of electron transfer between triplet naphthoquinones and amines

Autor: Minoru Yamaji, Haruo Shizuka, Shin'ichi Tsunoda, Iwao Amada

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 95:27-32

Electron transfer between triplet naphthoquinones ( 3 Nap ∗ ; 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone and 2,3-dimethyl-1,4-naphthoquinone in the triplet state) and N , N -dimethylaniline (DMA) or triethylamine (TEA) in acetonitrile (MeCN) a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::738284eae53659b33dd628a4a4486aee
https://doi.org/10.1016/1010-6030(95)04235-0

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Laser flash photolysis studies on hydrogen atom abstraction from phenol by triplet naphthoquinones in acetonitrile

Autor: Minoru Yamaji, Haruo Shizuka, Iwao Amada, Masami Sase

Publikováno v: Journal of the Chemical Society, Faraday Transactions. 91:2751

By means of ns laser flash photolysis, the absorption spectra and molar absorption coefficients (Iµ) of the 1,4-naphthosemiquinone radical (NQH˙) and 2,3-dimethyl-1,4-naphthosemiquinone radical (DMNQH˙) have been determined to be 8200 dm3 mol–1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53a11cc3b1a957755ede4811a16500af
https://doi.org/10.1039/ft9959102751

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Inclusion complex of cinnarizine with?-cyclodextrin in aqueous solution and in solid state

Autor: Tadakazu Tokumura, Iwao Amada, Yoshiharu Machida, Masayoshi Kasai, Yuki Tsushima, Haruhisa Ueda, Masanori Kayano, Tsuneji Nagai

Publikováno v: Journal of Inclusion Phenomena. 2:511-521

Inclusion complex formation of cinnarizine (CN) with β-cyclodextrin (β-CD) in aqueous solution and in solid state was confirmed by the solubility method, powder X-ray diffractometry, differential scanning calorimetry (DSC) and proton nuclear magnet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3174ef247416c1a54fa2654b21da786f
https://doi.org/10.1007/bf00662217

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Effect of wavelength on the photoisomerization of vitamin K2

Autor: Seishi Nakano, Ichino Tomio, Takahashi Kazumasa, Yukio Narabu, Takeshi Udagawa, Kazutaka Murakami, Takeyasu Amano, Kusaba Yoshio, Kazuo Guro, Akio Imai, Muramatsu Takehiko, Iwao Amada, Masayuki Konishi, Shin-ichi Tanioka

Publikováno v: NIPPON KAGAKU KAISHI. :1571-1575

波長可変レーザー装置を用いてcis-ビタミンK2(cis-VK2)→trans-ビタミンK2(trans-VK2)の光異性化反応を試みた。cis-VK2またはtrans-VK2の溶液に紫外から可視領域のレーザー光を照射し,それぞれの異�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8ca26ed7c125688eca1e8fdc99ce15b
https://doi.org/10.1246/nikkashi.1989.1571

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Inclusion complexes of cinnarizine with .BETA.-cyclodextrin in aqueous solution and in the solid state

Autor: Haruhisa Ueda, Tadakazu Tokumura, Iwao Amada, Masanori Kayano, Tsuneji Nagai, Yuki Tsushima, Masayoshi Kasai

Publikováno v: Chemical and Pharmaceutical Bulletin. 32:4179-4184

Inclusion complex formation of cinnarizine with β-cyclodextrin in aqueous solution and in the solid state was confirmed by the solubility method, powder X-ray diffractometry, differential scanning calorimetry (DSC) and proton nuclear magnetic resona

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4a1b4c49bea7f97046bbb9963fbe11d
https://doi.org/10.1248/cpb.32.4179

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Inclusion Complex of Cinnarizine with β-Cyclodextrin in Aqueous Solution and in Solid State

Autor: H. Ueda, Tsuneji Nagai, Yoshiharu Machida, Masanori Kayano, Tadakazu Tokumura, Iwao Amada, Yuki Tsushima, Masayoshi Kasai

Publikováno v: Clathrate Compounds, Molecular Inclusion Phenomena, and Cyclodextrins ISBN: 9789401088725

Inclusion complex formation of cinnarizine(CN) with s-cyclodextrin (s-CD) in aqueous solution and in solid state was confirmed by the solubility method, powder X-ray diffractometry, differential scanning calorimetry(DSC) and proton nuclear magnetic r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39061c316905d949541edf2c53adac55
https://doi.org/10.1007/978-94-009-5376-5_55

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Hydrogen atom abstraction and electron transfer of triplet 2,3-dihalo-1,4-naphthoquinones studied by the CIDEP technique and laser flash photolysis

Autor: Masami Sase, Takuji Shimokage, Minoru Yamaji, Shozo Tero-Kubota, Iwao Amada, Haruo Shizuka

Publikováno v: Scopus-Elsevier

Investigations using CIDEP techniques showed that an H-atom abstraction from phenol and the electron transfer from 1,2,4,5-tetramethoxybenzene to photoexcited 2,3-dibromo-1,4-naphthoquinone (DBNQ) and 2,3-dichloro-1,4-naphthoquinone (DCNQ) in the pol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebe0f33c12c71f440e624be1447ec78a
http://www.scopus.com/inward/record.url?eid=2-s2.0-0001934804&partnerID=MN8TOARS

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