期刊
MACROMOLECULES
卷 49, 期 4, 页码 1242-1251出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.5b02654
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资金
- MST [2015CB654702]
- NSFC [2136114037, 21374112, 21304088]
Living polymerization of 3-methylenehepta-1,6-diene (MHD) catalyzed by bis(phosphino)carbazoleide-ligated yttrium alkyl complex afforded a new product bearing pendant terminal vinyl groups with high stereotacticity (cis-1,4-selectivity up to 98.5%), proved by the NMR (H-1, C-13, and 1D ROESY) spectroscopic analyses, which demonstrates overwhelmingly favorable chemoselectivity toward conjugated diene over alpha-olefin moieties. High cis-1,4 random copolymers of MHD and isoprene could also be obtained with pendant vinyl groups ranging from 10% to 90%. These vinyl groups in every chain unit can be cleanly and quantitatively converted into various functionalities via light-mediated thiol-ene reaction, resulting in homo- and copolymers of various functional butadiene derivatives, which display versatile thermal properties.
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