Synthesis of terpyridine-containing polycarbonates with post polymerization providing water-soluble and micellar polymers and their metal complexes
| Autor: | Ahmed Z. Rashad, Donald J. Darensbourg, Gulzar A. Bhat |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Polymer Chemistry. 11:4699-4705 |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/d0py00850h |
| Popis: | Carbon dioxide based polymers synthesized from the metal-catalyzed copolymeriation of epoxides and CO2 containing the terpyridine ligand as an end group are reported. The strategy used was to carry out the polymerization in the presence of a carboxylic acid derivative of terpyridine, 4′-(4-carboxyphenyl)-2,2′:6′,2′′-terpyridine (HL), as a chain transfer agent. The epoxide monomer possessing a vinyl substituent, allyl glycidyl ether (AGE), was copolymerized with CO2 employing a (salen)Co(III) catalyst to afford a polycarbonate which upon the addition of mercaptoacetic acid across the double bond, followed by deprotonation, yielded a water soluble polymer. In a similar manner, the sequential formation of a diblock terpolymer produced from propylene oxide, AGE, and CO2 provided a amphiphilic polycarbonate which self-assembled upon addition to water to form micelle nanostructures. The molecular weights of these CO2-derived polycarbonates were shown to be easily controlled by the quantity of chain transfer agent used. These polymeric ligands were demonstrated to provide a modular design for synthesizing a wide variety of metal complexes as illustrated herein for zinc and platinum derivatives. |
| Databáze: | OpenAIRE |
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