Supramolecular Self-Assembly of Conjugated Diblock Copolymers

This paper describes the synthesis and characterization of a novel series of copolymers with different lengths of oligo(phenylene vinylene) (OPV) as the rod block, and poly(propylene oxide) as the coil block. Detailed characterization by means of transmission electron microscopy (TEM), atomic force...

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Bibliographic Details
Published in:Chemistry : a European journal 2004-02, Vol.10 (4), p.986-993
Main Authors: Wang, Hengbin, You, Wei, Jiang, Ping, Yu, Luping, Wang, H. Hau
Format: Article
Language:English
Subjects:
conjugation
diblock copolymers
micelles
oligo(phenylene vinylene)
self-assembly
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Summary:This paper describes the synthesis and characterization of a novel series of copolymers with different lengths of oligo(phenylene vinylene) (OPV) as the rod block, and poly(propylene oxide) as the coil block. Detailed characterization by means of transmission electron microscopy (TEM), atomic force microscopy (AFM), and small‐angle neutron scattering (SANS) revealed the strong tendency of these copolymers to self‐assemble into cylindrical micelles in solution and as‐casted films on a nanometer scale. These micelles have a cylindrical OPV core surrounded by a poly(propylene glycol) (PPG) corona and readily align with each other to form parallel packed structures when mica is used as the substrate. A packing model has been proposed for these cylindrical micelles. A novel series of copolymers with different lengths of oligo(phenylene vinylene) as the rod block and poly(propylene oxide) as the coil block have been synthesized. They self‐assemble into cylindrical micelles in solution, which readily align with each other to form parallel packed structures when mica is used as the substrate (see picture).
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.200305554