Self-Assembled Aggregates of Rod-Coil Block Copolymers and Their Solubilization and Encapsulation of Fullerenes
- 20 March 1998
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 279 (5358) , 1903-1907
- https://doi.org/10.1126/science.279.5358.1903
Abstract
Amphiphilic poly(phenylquinoline)- block -polystyrene rod-coil diblock copolymers were observed to self-organize into robust, micrometer-scale, spherical, vesicular, cylindrical, and lamellar aggregates from solution. These diverse aggregate morphologies were seen at each composition, but their size scale decreased with a decreasing fraction of the rigid-rod block. Compared to coil-coil block copolymer micelles, the present aggregates are larger by about two orders of magnitude and have aggregation numbers of over 10 8 . The spherical and cylindrical aggregates have large hollow cavities. Only spherical aggregates with aggregation numbers in excess of 10 9 were formed in the presence of fullerenes (C 60 , C 70 ) in solution, resulting in the solubilization and encapsulation of over 10 10 fullerene molecules per aggregate.Keywords
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