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Stereochemical Sequence Dictates Unimolecular Diblock Copolymer Assembly.


ABSTRACT: Deciphering the significance of length, sequence, and stereochemistry in block copolymer self-assembly remains an ongoing challenge. A dearth of methods to access uniform block co-oligomers/polymers with precise stereochemical sequences has precluded such studies. Here, we develop iterative exponential growth methods for the synthesis of a small library of unimolecular stereoisomeric diblock 32-mers. X-ray scattering reveals that stereochemistry modulates the phase behavior of these polymers, which we rationalize based on simulations carried out on a theoretical model system. This work demonstrates that stereochemical sequence can play a crucial role in unimolecular polymer self-assembly.

SUBMITTER: Golder MR 

PROVIDER: S-EPMC5803323 | BioStudies | 2018-01-01

REPOSITORIES: biostudies

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