ROMP from ROMP: A New Approach to Graft Copolymer Synthesis
نویسندگان
چکیده
منابع مشابه
ROMP from ROMP: A New Approach to Graft Copolymer Synthesis.
A new strategy is presented for the synthesis of graft copolymers using only the ring-opening metathesis polymerization (ROMP). From a ROMP-derived main chain, pendant maleimide functional groups are converted into norbornene moieties via a Diels-Alder reaction with cyclopentadiene. The norbornene groups serve as sites of initiation, and subsequent ROMP from the main chain yields graft copolyme...
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We report on the block copolymerization of two structurally different norbornene monomers (±)-endo,exo-bicyclo[2.2.1]-hept-5-ene-2,3-dicarboxylic acid dimethylester (7), and (±)-endo,exo-bicyclo[2.2.1]-hept-5-ene-2,3-dicarboxylic acid bis(1-oxyl-2,2,6,6-tetramethyl-piperidin-4-yl) ester (9) using ruthenium based Grubbs' type initiators [(PCy₃)₂Cl₂Ru(benzylidene)] G1 (PCy₃ = tricyclohexylphosphi...
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Graft-through ring-opening metathesis polymerization (ROMP) using ruthenium N-heterocyclic carbene catalysts has enabled the synthesis of bottle-brush polymers with unprecedented ease and control. Here we report the first bivalent-brush polymers; these materials were prepared by graft-through ROMP of drug-loaded polyethylene-glycol (PEG) based macromonomers (MMs). Anticancer drugs doxorubicin (...
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Ileana Dragutan 1,‡, Valerian Dragutan 1,*,‡, Petru Filip 1,‡, Bogdan C. Simionescu 2,*,‡ and Albert Demonceau 3,‡ 1 Institute of Organic Chemistry, Romanian Academy, 202B Spl. Independentei, P. O. Box 35-108, Bucharest 060023, Romania; [email protected] (I.D.); [email protected] (P.F.) 2 Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, Iasi 700487, Romania; bcsimion@icm...
متن کاملSynthesis of cis,syndiotactic ROMP polymers containing alternating enantiomers.
Ring-opening metathesis polymerization (ROMP) of rac-endo,exo-5,6-dicarbomethoxynorbornene (inter alia) yields a cis,syndio,alt-polymer, one in which the sequential units in the cis,syndiotactic polymer consist of alternating enantiomers. Cis selectivity arises through addition of the monomer to produce an all-cis-metallacyclobutane intermediate, while syndioselectivity and alternating enantiom...
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ژورنال
عنوان ژورنال: Macromolecules
سال: 2009
ISSN: 0024-9297,1520-5835
DOI: 10.1021/ma900056b