Affiliation:
1. Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.
Abstract
The right hand lines up vinyl ethers
Well-optimized catalysts produce vast quantities of isotactic polypropylene, in which the side chains all face the same way. Add an oxygen into the monomer, though, and that degree of uniformity becomes harder to enforce. Teator and Leibfarth report a general protocol to polymerize a variety of such vinyl ethers isotactically (see the Perspective by Foster and O'Reilly). They rely on a chiral phosphoric acid in combination with a titanium Lewis acid to bias the monomer orientation during cationic polymerization. The resulting polymers show promising adhesive properties.
Science
, this issue p.
1439
; see also p.
1394
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
97 articles.
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