CdS-containing nano-assemblies of double hydrophilic block copolymers in water

0360799 - ÚMCH 2012 RIV DE eng J - Journal Article
Uchman, M. - Procházka, K. - Gatsouli, K. - Pispas, S. - Špírková, Milena
CdS-containing nano-assemblies of double hydrophilic block copolymers in water.
Colloid and Polymer Science. Roč. 289, č. 9 (2011), s. 1045-1053. ISSN 0303-402X. E-ISSN 1435-1536
R&D Projects: GA ČR GCP205/11/J043; GA ČR GAP208/10/0353
Institutional research plan: CEZ:AV0Z40500505
Keywords : double hydrophilic block copolymers * polymer self-assembly * light scattering
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 2.331, year: 2011

Two samples of poly(sodium(sulfamate-carboxylate) isoprene)-block-poly(ethylene oxide) copolymer (SCIEO-1 and SCIEO-2) differing in molecular weight and relative length of polyelectrolyte blocks have been used as templates for the synthesis of cadmium sulfide (CdS) nanoparticles in aqueous media. The double-hydrophilic copolymer SCIEO has very high 1D charge density, and its polymer chain structure mimics that of polysaccharide heparin. It is soluble in aqueous media, but the addition of cadmium acetate (Cd(Ac)2) to its aqueous solution causes the formation of micellar aggregates with Cd2+containing insoluble cores above the threshold Cd2+ concentration. The trapped Cd2+ ions can be chemically transformed to CdS nanoparticles. The stability of hybrid SCIEO/CdS micelles depends on the ratio of PEO-to-SCI lengths.
Permanent Link: http://hdl.handle.net/11104/0198265