- Poly(ferrocenylsilane-block-methacrylates) via Sequential Anionic and Atom Transfer Radical Polymerization
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A route to 2-bromoisobutyryl end-functionalized poly(ferrocenyldimethylsilane), allowing essentially quantitative end-capping was discussed. Following the formation of the organometallic block by anionic polymerization, a ruthenium-mediated controlled radical polymerization of methyl methacrylate was employed to grow the second block. Well-defined PFS-b-PMMA block copolymers with low polydispersities and controlled compositions were obtained. The use of atom transfer radical polymerization (ATRP) to form the second block implies that a wide variety of (meth)acrylic and other vinyl monomers can be used, which opens the way to novel hybrid organic-organometallic block copolymers and amphiphilic organometallic block copolymers.
- Korczagin, Igor,Hempenius, Mark A.,Vancso, G. Julius
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- Room-Temperature Gold-Catalysed Arylation of Heteroarenes: Complementarity to Palladium Catalysis
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Tailoring of the pre-catalyst, the oxidant and the arylsilane enables the first room-temperature, gold-catalysed, innate C?H arylation of heteroarenes. Regioselectivity is consistently high and, in some cases, distinct from that reported with palladium ca
- Cresswell, Alexander J.,Lloyd-Jones, Guy C.
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supporting information
p. 12641 - 12645
(2016/08/30)
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- FUNCTIONALIZED SILANES AND ELECTROLYTE COMPOSITIONS AND ELECTROCHEMICAL DEVICES CONTAINING THEM
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Described are compounds of the structure R4-a-Si-(Sp-Y)a-Zb, wherein "a" is integer from 1 to 4; "b" is an integer from 0 to (3 x a); "Z," which is absent when "b "R" or formula (II), wherein each "R" is halogen, C1-6 linear or branched alkyl, alkenyl, or alkynyl or C1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl; each "Sp" C1-15 linear or branched alkylenyl or CMS linear or branched halo-alkylenyl; and each "Y" an organic polar group. Also described are electrolyte compositions containing one or more of these compounds.
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Page/Page column 28
(2016/04/26)
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- Immobilization of biomolecules via ruthenium-catalyzed functionalization of the surface of silica with a vinylsilane
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A new ruthenium complex catalyzed procedure for the efficient O-silylation of an SiO-H group on the silica surface of glass beads with controlled pores (CPG) using 1-trimethylsiloxy-3-dimethylvinylsilylpropane leading to Si-O-Si bond formation with the evolution of ethylene is described. The formed linker contains alkyl hydroxyl groups which can be reacted with a nucleoside phosphoramidite unit. The CPG support containing alkyl hydroxyl groups is successfully applied in automatic chemical synthesis of DNA fragments.
- Hreczycho, Grzegorz,Chmielewski, Marcin K.,MacIejewski, Hieronim,Ratajczak, Tomasz,Marciniec, Bogdan
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p. 3605 - 3608
(2013/07/05)
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