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Well‐Organized CdS/C 60 in Block Copolymer Micellar Cores
Author(s) -
Koh HaengDeog,
Lee JungPil,
Lee JaeSuk
Publication year - 2009
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200900036
Subject(s) - copolymer , micelle , toluene , polystyrene , molecule , materials science , nanoparticle , micellar solutions , transmission electron microscopy , pyridine , polymer chemistry , quenching (fluorescence) , fluorescence , chemical engineering , chemistry , nanotechnology , polymer , organic chemistry , aqueous solution , physics , quantum mechanics , engineering , composite material
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 60 δ− –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.