A General Strategy for Highly Efficient Nanoparticle Dispersing Agents Based on Hybrid Dendritic Linear Block Copolymers
2009 (English)In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 47, no 5, 1237-1258 p.Article in journal (Refereed) Published
A modular approach to the synthesis of a library of hybrid dendriticlinear copolymers was developed based on RAFT polymerization from monodisperse dendritic macroRAFT agents. By accurately controlling the molecular weight of the linear block, generation number of the dendrimer and the nature of the dendritic chains ends, the performance of these hybrid block copolymers as dispersing agents was optimized for a range of nanoparticles. For titanium dioxide nanoparticles, dispersion in a poly(methyl methacrylate) matrix was maximized with a second generation dendrimer containing four carboxylic acid end groups, and the quality of dispersion was observed to be superior to commercial dispersing agents for TiO2. This approach also allowed novel hybrid dendritic-linear dispersing agents to be prepared for the dispersion of Au and CdSe nanoparticles based on disulphide and phosphine oxide end groups, respectively.
Place, publisher, year, edition, pages
2009. Vol. 47, no 5, 1237-1258 p.
block copolymers, dendrimers, dispersions, surfaces, chain transfer polymerization, stabilized gold nanoparticles, high, refractive-index, raft polymerization, diblock copolymers, molecular-weight, click chemistry, high-density, dendrimers, nanocomposites
IdentifiersURN: urn:nbn:se:kth:diva-18197DOI: 10.1002/pola.23186ISI: 000263618100001OAI: oai:DiVA.org:kth-18197DiVA: diva2:336243
QC 201005252010-08-052010-08-052011-01-25Bibliographically approved