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9篇 您的检索式:作者名="J.J.M"
    题名 作者 年代 出处 被引量
1Xanthone isolated from Securidaca longependunculata with activity against erectile dysfunction显示文摘N.C Rakuambo J.J.M Meyer A Hussein 2004Fitoterapia2004,,5:1
2Modification of the surface chemistry of activated carbons显示文摘J.L Figueiredo M.F.R Pereira M.M.A Freitas J.J.M órf?o 1999Carbon1999,,9:1
3Synthesis and electronic properties of expanded 5-(hetero)arylthien-2-yl substituted 3-ethynyl quinoxalines with AIE characteristics显示文摘Expanded 5-(hetero)aryl-thien-2-yl substituted 3-ethynyl quinoxaline dyes with variable substitution pattern on the peripheral thiophene ring were synthesized in moderate to very good yields by Suzuki and Buchwald-Hartwig coupling of the corresponding brominated 3-ethynyl quinoxalines. Dumbbell-shaped bis(thienyl 3-ethynyl quinoxalines) are also accessible by the Suzuki protocol. The photophysical properties were investigated by UV and fluorescence spectroscopy. Most of the obtained compounds display fluorescence in solution and some of them also in the solid state. Additionally, tuning of the emission color of the quinoxaline based chromophores can be conveniently accomplished by the remote substituent group. The determined absorption and emission maximum as well as the Stokes shifts strongly correlate with Hammett σp+parameters. Besides,photophysical properties of selected derivatives in the solid state, biphasic solutions, and PMMA films, along with their relationships, are comparatively investigated. Moreover, two 5-(hetero)aryl-thien-2-yl substituted 3-ethynyl quinoxaline dyes are aggregation induced emission(AIE) chromophores indicated by restriction of molecular motions. A covalently restricted 3-ethynyl quinoxaline supports that the inhibition of molecular rotation is responsible for the significant enhancement of fluorescence in acetonitrile/water mixtures.Franziska K.Merkt Thomas J.J.Müller 2018Science China Chemistry2018,61,8:1
4Modification of the surface chemistry of activated carbons显示文摘J.L Figueiredo M.F.R Pereira M.M.A Freitas J.J.M órf?o 1999Carbon1999,,9:1
5CrossSetor Supervision which Model显示文摘Kremers J.J.M Schoenmaker D Witerts P.J 0,,06:1
6Modification of the surface chemistry of activated carbons显示文摘J.L Figueiredo M.F.R Pereira M.M.A Freitas J.J.M órf?o 1999Carbon1999,,9:1
7Modification of the surface chemistry of activated carbons显示文摘J.L Figueiredo M.F.R Pereira M.M.A Freitas J.J.M órf?o 1999Carbon1999,,9:1
8Efficient photodiodes from interpenetrating polymer networks显示文摘Halls J.J.M Walsh C.A Greenham N.C 0,,6540:1
9Antibacterial activity of linoleic and oleic acids isolated from Helichrysum pedunculatum : a plant used during circumcision rites显示文摘F Dilika P.D Bremner J.J.M Meyer 2000Fitoterapia2000,,4:1
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