Radical polymerization of styrene mediated by 9-(1-phenylethyl)-9-((1-phenylethyl)thio)-9<italic>H</italic>-thioxanthene

Nitroxide-Mediated Radical Polymerization of Styrene Initiated from the Surface of Titanium Oxide Nanoparticles

Titanium dioxide (TiO2) nanoparticles, with an average size of about 45 nm, were encapsulated by polystyrene using in situ nitroxide mediated radical polymerization   in the presence of 3-aminopropyl triethoxy silane (APTES) as a coupling agent and 2, 2, 6, 6-tetramethylpiperidinyl-1-oxy  as a initiator. First, the initiator for NMRP was covalently bonded onto the surface of Titanium dioxide na...

ABSTRACTS IN PERSIAN - Vol. 9, No. 1

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Cover vol. 9, no.1, February 2012

SYNTHESIS OF 1,4,8 - TRIHYDROXY- 9 (1 0 H) - ANTHRACENONE

The title compound has been synthesized starting from 2-methoxybenzdiethylarnide (1).

Controlled Radical Polymerization of methyl methacrylate and styrene mediated by a cobalt(II)-based initiatior system

The role of cobalt(II) complexes containing 2-formylpyrrolyl chelating ligands and phosphine ligands combined with a bromo-alkyl ester, an alkyl bromide or an azo compound in the formation of suitable initiator systems for vinyl monomer controlled radical polymerization was studied. The formation of syndiotactic-rich (Pr>0.7) poly(methyl methacrylate) (PMMA) and atactic (Pr=0.49) poly(styrene) ...