Evaluation of structural, spectral, thermal and optical properties of an efficient centrosymmetric organic single crystal 2-[2-(4-diethylamino-phenyl)-vinyl]-1-methyl pyridinium tetrafluoroborate for nonlinear optical applications
Solid-state fluorescence of pyridinium styryl dyes
作者:Masaki Matsui、Kohtaro Ooiwa、Ayumi Okada、Yasuhiro Kubota、Kazumasa Funabiki、Hiroyasu Sato
DOI:10.1016/j.dyepig.2013.07.026
日期:2013.12
o)styryl]pyridinium salts showed fluorescence maxima at around 650 nm in the solid state depending on the alkyl group and counter anion. 1-Butyl-2-[4-(diethylamino)styryl]pyridinium bis(perfluorobutylsulfonyl)imide exhibited the fluorescence maximum at 652 nm with the highest quantum yield 0.16 in the crystalline form. The single X-ray crystallography suggests that this compound exhibits isolated dimer-type
A series of 1-methyl-2-(4-aminostyryl)pyridinium perchlorates and iodides were investigated as fluorescent probes for the monitoring of the progress of free radical polymerization. The study on the changes in the fluorescence intensity and spectroscopic shifts of studied compounds were carried out during thermally initiated polymerization of methyl methacrylate and during photoinitiated polymerization of a 2-ethyl-2-(hydroxymethyl)propane-1,3-diol triacrylate (TMPTA)–1-methylpyrrolidin-2-one (MP) mixture. The purpose of these studies was to find a relationship between the changes in the shape and intensity of probe fluorescence and degree of monomer conversion into polymer. The polymer formation was estimated gravimetrically or by the measurement of the degree of monomer double bond disappearance using FTIR spectroscopy.
Pyridinium compounds containing a cation having the formula la or lb
and a pharmaceutically acceptable cation are useful as pharmaceuticals, particularly as anti-fungal agents. In formulae la and Ib R1 is alkyl of at least 3 carbon atoms or aralkyl; R2 and R5 are hydrogen or various defined substituents; R3 and R4 are hydrogen or lower alkyl; Re and R7 are lower alkyl or aryl(lower)alkyl or R6 and R7 represent a group having formula II
(where A is -(CH2)n-, O, S or NR8 where n is 0, 1 or 2 and R8 is lower alkyl) or a mono- or di- (lower alkyl) substitution product of a group having formula II.
含有具有式 la 或 lb 的阳离子和药学上可接受的阳离子的吡啶鎓化合物可用作药物,特别是抗真菌剂。 在式 la 和 Ib 中,R1 是至少含有 3 个碳原子的烷基或芳烷基;R2 和 R5 是氢或各种定义的取代基;R3 和 R4 是氢或低级烷基;Re 和 R7 是低级烷基或芳基(低级)烷基或 R6 和 R7 代表具有式 II 的基团(其中 A 是-(CH2)n-、O、S 或 NR8,其中 n 是 0、1 或 2,R8 是低级烷基)或具有式 II 的基团的单-或双(低级烷基)取代产物。
RADIATION DOSIMETRY SOL OR GEL AND RADIATION DOSIMETER COMPRISING SAME AS MATERIAL FOR RADIATION DOSIMETRY
申请人:Riken
公开号:EP3686632A1
公开(公告)日:2020-07-29
There is provided a radiation dosimetry sol or gel, and a radiation dosimeter containing the sol or the gel as a material for radiation dosimetry.
A radiation dosimetry sol or gel characterized by comprising a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; and a silicate salt (B).
A radiation dosimetry sol or gel characterized by comprising a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; a silicate salt (B); a water-soluble organic polymer (C) having an organic acid salt structure or an organic acid anion structure; and a dispersant (D) for the silicate salt (B).
A radiation dosimeter comprising, as a material for radiation dosimetry, the above-mentioned radiation dosimetry sol or gel.
Radiation dosimetry sol or gel and radiation dosimeter comprising same as material for radiation dosimetry
申请人:RIKEN
公开号:US11150358B2
公开(公告)日:2021-10-19
A radiation dosimetry sol or gel, and a radiation dosimeter containing the sol or the gel as a material for radiation dosimetry. A radiation dosimetry sol or gel including a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; and a silicate salt (B). A radiation dosimetry sol or gel including a compound (A) having an excitation light-induced fluorescence property that is changed by a radiolysis product of water; a silicate salt (B); a water-soluble organic polymer (C) having an organic acid salt structure or an organic acid anion structure; and a dispersant (D) for the silicate salt (B). A radiation dosimeter including, as a material for radiation dosimetry, the above-mentioned radiation dosimetry sol or gel.