Orthogonally Self-Assembled Multifunctional Block Copolymers

Autor:	Kamlesh P. Nair, Ashootosh V. Ambade, Caroline Burd, Marcus Weck, Mary Nell Higley
Rok vydání:	2009
Předmět:	Models Molecular Organic Chemistry Molecular Conformation Supramolecular chemistry Hydrogen Bonding General Chemistry ROMP Catalysis Cyclooctanes chemistry.chemical_compound Molecular recognition chemistry Polymerization Metals Polymer chemistry Copolymer Moiety Self-assembly Plastics Norbornene
Zdroj:	Chemistry - A European Journal. 15:11904-11911
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.200801647
Popis:	We report the synthesis of telechelic poly(norbornene) and poly(cyclooctene) homopolymers by ring-opening metathesis polymerization (ROMP) and their subsequent functionalization and block copolymer formation based on noncovalent interactions. Whereas all the poly(norbornene)s contain either a metal complex or a hydrogen-bonding moiety along the polymer side-chains, together with a single hydrogen-bonding-based molecular recognition moiety at one terminal end of the polymer chain. These homopolymers allow for the formation of side-chain-functionalized AB and ABA block copolymers through self-assembly. The orthogonal natures of all side- and main-chain self-assembly events were demonstrated by (1)H NMR spectroscopy and isothermal titration calorimetry. The resulting fully functionalized block copolymers are the first copolymers combining both side- and main-chain self-assembly, thereby providing a high degree of control over copolymer functionalization and architecture and bringing synthetic materials one step closer to the dynamic self-assembly structures found in nature.
Databáze:	OpenAIRE
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