Abstract
A novel route to cross-linked and functionalized random copolymers using a rapid, one-step, and orthogonal copolymer cross-linking/functionalization strategy has been developed. Random terpolymers possessing high concentrations of pendant alkyl chains and either (1) palladated-pincer complexes and diaminopyridine moieties (DAD hydrogen-bonding entities) or (2) palladated-pincer complexes and cyanuric wedges (ADAADA hydrogen-bonding entities) have been synthesized using ring-opening metathesis polymerization. Non-covalent cross-linking of the resultant copolymers using a directed functionalization strategy leads to dramatic increases in solution viscosities for cross-linked polymers via metal-coordination while only minor changes in viscosity were observed when hydrogen-bonding motifs were employed for cross-linking. The cross-linked materials could be further functionalized via self-assembly by employing the second recognition motif along the polymeric backbones giving rise to highly functionalized materials with tailored cross-links. This novel non-covalent polymer cross-linking/functionalization strategy allows for rapid and tunable materials synthesis by overcoming many difficulties inherent to the preparation of covalently cross-linked polymers.
Original language | English (US) |
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Pages (from-to) | 7205-7215 |
Number of pages | 11 |
Journal | Tetrahedron |
Volume | 60 |
Issue number | 34 |
DOIs | |
State | Published - Aug 16 2004 |
Keywords
- Cross-linking
- Metathesis
- Polymers
- Self-assembly
ASJC Scopus subject areas
- Biochemistry
- Drug Discovery
- Organic Chemistry