- Highly Ordered Nanoporous Films from Supramolecular Diblock Copolymers with Hydrogen-Bonding Junctions
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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 kg mol?1are 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 crosslinking or invasive chemical degradations.
- Montarnal, Damien,Delbosc, Nicolas,Chamignon, Cécile,Virolleaud, Marie-Alice,Luo, Yingdong,Hawker, Craig J.,Drockenmuller, Eric,Bernard, Julien
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p. 11117 - 11121
(2016/07/06)
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- Oligoamide duplexes as organogelators
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Oligoamide duplexes carrying multiple alkyl side chains were found to serve as gelators for aromatic solvents. The double-stranded backbone was essential for the hierarchical self-assembly of the molecular duplex into fibers of high aspect ratios. The demonstrated gelating abilities may be extended to a large family of analogous H-bonded duplexes having different H-bonding sequences, leading to a unique platform for developing a diverse variety of potential gelators based on a supramolecular and/or a dynamic covalent approach.
- Cao, Ruikai,Zhou, Jingjing,Wang, Wei,Feng, Wen,Li, Xianghui,Zhang, Penghui,Deng, Pengchi,Yuan, Lihua,Gong, Bing
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supporting information; experimental part
p. 2958 - 2961
(2010/09/15)
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- A highly stable, six-hydrogen-bonded molecular duplex
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This paper describes the design, synthesis, and characterization of a hydrogen-bonded molecular duplex (3·4). Two oligoamide molecular strands, 3 and 4, with the complementary hydrogen-bonding sequences ADAADA and DADDAD, respectively, were found to form
- Zeng, Huaqiang,Miller, Rebecca S.,Flowers II, Robert A.,Gong, Bing
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p. 2635 - 2644
(2007/10/03)
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