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Transforming the Self‐Assembled Structures of Diblock Copolymer/POSS Nanoparticle Composites Through Complementary Multiple Hydrogen Bonding Interactions
Author(s) -
Wu YuRong,
Wu YiChen,
Kuo ShiaoWei
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300251
Subject(s) - copolymer , silsesquioxane , materials science , lamellar structure , nanocomposite , hydrogen bond , polymer chemistry , nanoparticle , self assembly , chemical engineering , composite material , polymer , molecule , chemistry , nanotechnology , organic chemistry , engineering
Well‐defined self‐assembled structures are obtained in the form of block copolymer (BCP) nanocomposites, prepared by blending octuply adenine (A)‐functionalized polyhedral oligomeric silsesquioxane (OBA‐POSS) nanoparticles (NPs) with a thymine (T)‐containing BCP (PS‐ b ‐PVBT); these nanocomposites are stabilized through complementary multiple hydrogen bonding interactions between the A and T units. A transition from one ordered morphology to another occurs upon increasing the content of OBA‐POSS NPs in the PS‐ b ‐PVBT diblock copolymer, namely lamellar structures at relatively low OBA‐POSS NP contents (<25 wt%) and cylindrical structures at higher OBA‐POSS NP contents (>25 wt%), with concomitant variations in the effective interaction parameter and the overall volume fractions of the two microphase‐separated domains.