Journal
MACROMOLECULES
Volume 49, Issue 17, Pages 6268-6276Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.6b01268
Keywords
-
Categories
Funding
- U.S. National Science Foundation Nanoscale Science and Engineering Center at UW-Madison [DMR-0832760]
- NSF [DMR-0832760, DMR-1121288, CHE-1048642]
- U.S. Department of Energy (DOE) Office of Science User Facility [DE-AC02-06CH11357]
- Natural Sciences Engineering Research Council of Canada
Ask authors/readers for more resources
We report a reactive polymer platform for the rapid discovery of strongly segregated diblock polymers that microphase separate into well-defined morphologies with sub-5 nm features. Our strategy employs reactive poly(styrene-block-2-vinyl-4,4-dimethylazlactone) (SV) polymers with low degrees of polymerization (N), in which the V blocks undergo selective and quantitative reactions with functional primary amines, to identify new poly(acrylamides) that are highly immiscible with poly(styrene) and induce block polymer self-assembly. Using a combination of optical birefringence and small-angle X-ray scattering (SAXS), we characterize a library of 17 block polymers produced by amine functionalization of four parent SV diblocks synthesized by sequential RAFT polymerizations. We demonstrate that V block functionalization with hydroxy- and methoxy-functional amines yields diblocks that order into lamellar mesophases with half-pitches as small as 3.8 nm. Thus, this azlactone-based reactive molecular platform enables combinatorial generation of polymer libraries with diverse side chain structures that may be rapidly screened to identify new high chi/low N systems for self-assembly at ever decreasing length scales.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available