Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 38, Pages 11117-11121Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504838
Keywords
hydrogen bonding; nanoporous membranes; RAFT agents; supramolecular diblock copolymers
Categories
Funding
- Agence Nationale de la Recherche (Programme Blanc) [JCJC NAMASTE ANR-12-JS08-0011]
- MRSEC program of the National Science Foundation [DMR 1121053]
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We designed efficient precursors that combine complementary associative groups with exceptional binding affinities and thiocarbonylthio moieties enabling precise RAFT polymerization. Well defined PS and PMMA supramolecular polymers with molecular weights up to 30 kgmol(-1) are synthesized and shown to form highly stable supramolecular diblock copolymers (BCPs) when mixed, in non-polar solvents or in the bulk. Hierarchical self-assembly of such supramolecular BCPs by thermal annealing affords morphologies with excellent lateral order, comparable to features expected from covalent diblock copolymer analogues. Simple washing of the resulting materials with protic solvents disrupts the supramolecular association and selectively dissolves one polymer, affording a straightforward process for preparing well-ordered nanoporous materials without resorting to cross-linking or invasive chemical degradations.
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