Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Nobuo Takamiya"'
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 34:2059-2065
Photoluminescent characteristics of polysiloxane containing pendant mesogenic 4-cyanobiphenyl (CB) [Si(Me)(R)O] x [Si(Me)(R')O] y (R= (CH 2 ) 3 COOH, R'= (CH 2 ) 3 COOPhPhCN) and its monomeric analogues were studied in THF solution. An excimer format
Publikováno v:
Macromolecular Chemistry and Physics. 197:2983-2999
A new water-insoluble polysiloxane containing pendant Ru(bpy) 3 2+ (bpy = 2,2'-bipyridine) was studied with respect to the photoluminescence and its quenching by dioxygen. The emission was quenched by O 2 in water more efficiently than in gas phase,
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 92:47-51
Electron transfer quenching of photoexcited Ru(bpy) 3 2+ (bpy, bipyridine) by three kinds of hole transport material, phenothiazine (PTZ) and 10-methylphenothiazine (MPTZ) was studied in acetonitrile solution and a polymer film. The quenching rate co
Publikováno v:
Macromolecular Chemistry and Physics. 196:2237-2249
Side-chain functionalized polysiloxanes were prepared via polymer-analogous esterification of poly[(3-chloroformylpropyl)methylsiloxane] with 4-(4-hydroxyphenylazo)nitrobenzene (P1), 4-[4-(ω-hydroxyalkyloxy)phenylazo]nitrobenzene (P2-P4), 4-(4-[N-(2
Publikováno v:
Macromolecular Chemistry and Physics. 196:1241-1250
The photoluminescent Ru(bpy) 3 2+ complex was dispersed in a polysiloxane film containing 2,2'-bipyridine (bpy) pendant groups. The unusually long photoluminescence lifetime of the Ru(bpy) 3 2+ (1,94 μs at 25 o C) and the blue-shifted photoluminesce
Publikováno v:
The Journal of Physical Chemistry. 99:6648-6651
Autor:
Yu Nagase, Yasuo Shirai, Makoto Hasegawa, Jiro Abe, Nobukatsu Nemoto, Hiroshi Matsushima, Nobuo Takamiya
Publikováno v:
Macromolecules. 28:2938-2943
The behavior of the electric field induced dipolar alignment of mesogenic chromophores for a thin film of a side-chain liquid crystalline polysiloxane containing mesogenic NLO-active azo chromophores is investigated by UV-visible, polarized FTIR-ATR,
Publikováno v:
Journal of Inorganic and Organometallic Polymers. 4:391-401
Photoluminescent Ru(bpy) 3 2+ complex was covalently anchored on a polysiloxane chain, and photoluminescence of the film was studied. The emission yield becomes lower with higher probe concentration indicating concentration quenching. The intermolecu
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 84:271-277
Photoluminescent tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy) 3 2+ ) was dispersed in a polysiloxane film by mixture casting from an ethanol solution. The distance distribution of the dispersed molecules and the distance-dependent concentrations que
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 32:2457-2467
The oxidation of hydroquinone catalyzed by pyridine-Cu(II) complexes attached to polyorganosiloxane was investigated in the mixed solvent of methanol/water (vol. ratio 2/1). The catalytic oxidation followed Michaelis-Menten-like kinetics. The large k