Cornucopian cylindrical aggregate morphologies from self-assembly of amphiphilic triblock copolymer in selective media.

Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, People's Republic of China.
The Journal of Physical Chemistry B (Impact Factor: 3.38). 12/2005; 109(46):21549-55. DOI: 10.1021/jp052420m
Source: PubMed

ABSTRACT We have investigated, both experimentally and theoretically, the aggregation of ABA amphiphilic triblock copolymers in dilute solution. We observed a number of complex architectures having toroidal and network structures, including some novel ones. The computational analyses of these systems offer some insight into the origins of the self-assembly of these amphiphiles. The results we obtained using real-space self-consistent field theory reveal that the formation of network and toroidal structures from the block copolymers occurs as the result of the breaking of "inhomogeneous vesicles"; the observed polymorphism results from the existence of multiple metastable states.

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