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Self-organization of stack-up block copolymers into polymeric supramolecules

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Author(s): Yuan Yong | Choi Ka-Wai | Wong Herbert

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 2;
Issue: 2;
Start page: 104;
Date: 2007;
Original page

Keywords: Self-assembly | Block co-polymer | NMR

ABSTRACT
AbstractPolyethylene oxide –b– polypropylene oxide -b- polyethylene oxide (EO106PO70EO106) block copolymer self-organizes into polymeric supramolecules, characterized by NMR as phase transition from the isotropic stack-up block structure to the ordered cubic polymeric supramolecular structure. Its dependence on both temperature and copolymer concentration is clearly shown by the changes in line shape and chemical shift of the PO70blockβ,γresonances.

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