Well-Organized CdS/C(60) in Block Copolymer Micellar Cores

Abstract

CdS nanoparticles of 4.5 nm diameter were synthesized in poly(2-vinylpyridine) micellar cores which were obtained by solvating a polystyrene-block-poly(2-vinylpyridine) block copolymer in polystyrene-selective toluene. Then, a C(60) -toluene solution was dispersed into the CdS micelle solution with stirring. This led to the well-defined organization of two different nanoparticles; specifically: a CdS NP decorated by several/dozens of C(60) molecules, because C(60) molecules were strongly coordinated with pyridine molecules in the micellar cores by charge-transfer complexation C 60δ--P2VP(δ+) . A harmoniously organized CdS/C(60) micellar structure was clearly verified by transmission electron microscopy. Fluorescent quenching of CdS nanoparticles, which was strongly affected by neighboring C(60) molecules, was observed.