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Highly Ordered Hexagonal Arrays of Hybridized Micelles from Bimodal Self‐Assemblies of Diblock Copolymer Micelles
Author(s) -
Yoo Seong Il,
Yun Sang Hyun,
Kim Hyeong Ki,
Sohn ByeongHyeok
Publication year - 2010
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.200900790
Subject(s) - micelle , copolymer , materials science , polystyrene , solvent , chemical engineering , tetrahydrofuran , polymer chemistry , self assembly , nanotechnology , organic chemistry , chemistry , polymer , composite material , aqueous solution , engineering
We demonstrate the formation of highly ordered hexagonal arrays of hybridized polystyrene–poly(4‐vinyl pyridine), PS–PVP, micelles with controllable size by solvent annealing techniques. Because the formation of hybridized micelles was prohibited in the mixture solutions of two different‐sized PS–PVP micelles, single‐layered films with bimodal self‐assemblies of small and large micelles were fabricated from the mixture solutions by adjusting their mixing ratios. When the single‐layered films were solvent annealed by saturated vapor of tetrahydrofuran (THF), on the other hand, small and large PS–PVP micelles in the bimodal self‐assemblies merged together to form hybridized micelles. In addition, the hybridized micelles arranged themselves in a highly ordered hexagonal array, the diameter and center‐to‐center distance of which were precisely adjusted by varying the mixing ratio of small to large micelles in the bimodal assemblies.