402828-41-5Relevant articles and documents
Directing self-assembly of nanoparticles at water/oil interfaces
Duan, Hongwei,Wang, Dayang,Kurth, Dirk G.,Moehwald, Helmuth
, p. 5639 - 5642 (2004)
Finding the right angle: The contact angle of nanoparticles at the water/oil interface can be engineered close to 90° by capping with ligands containing carboxylic ester terminal groups. This drives the nanoparticles to self-assemble into close-packed films (see picture), and thus provides the opportunity to create two- or three-dimensional homo- or heterogeneous nanostructures for electronic, optoelectrical, and magnetic applications.
Efficient two-step synthesis of 11,11′-dithiobis[1-(2-bromo-2- methylpropionyloxy)undecane], a conventional initiator for grafting polymer brushes from gold surfaces via ATRP
Belegrinou, Serena,Malinova, Violeta,Masciadri, Raffaello,Meier, Wolfgang
experimental part, p. 3000 - 3007 (2010/11/05)
11,11′-Dithiobis[1-(2-bromo-2-methylpropionyloxy)undecane], a conventional initiator for grafting polymers from gold surfaces, was synthesized in two steps from 11-mercapto-1-undecanol in 88-92% overall yield. Oxidative dimerization of 11-mercapto-1-undecanol with a catalytic amount of sodium iodide and 30% hydrogen peroxide in ethyl acetate proceeded in 96% yield. Esterification with 2-bromoisobutyryl bromide in dichloromethane was clean and almost quantitative (92% yield) with pyridine used as base, whereas triethylamine gave a messy reaction (64% yield). Alternatively, esterification with 2-bromo-2-methyl-propanoic acid in dichloromethane occurred readily under Steglich′s conditions with N,N′-dicyclohexylcarbodiimide (DCC) and a catalytic amount of dimethylaminopyridine (DMAP; 88% yield). Copyright Taylor & Francis Group, LLC.
