Polymerizations of 2-(Trimethylsilyl)ethanesulfonyl-activated aziridines
Journal Article
·
· European Polymer Journal
- University of Alabama, Tuscaloosa, AL (United States); OSTI
- University of Alabama, Tuscaloosa, AL (United States)
A novel N-sulfonyl aziridine, N-((2-(trimethylsilyl)ethyl)sulfonyl)-2-methyl-aziridine (SES-MeAz) was synthesized, and its controlled anionic ring-opening polymerization to form poly(SES-MeAz) studied. The desulfonylation of poly(SES-MeAz)s can be achieved under mild conditions, with tetrabutylammonium fluoride (TBAF) to form polypropylene imine (PPI), although purification of the PPI was not completely successful. The block copolymer p(pTs-MeAz)-b-p(SES-MeAz), (pTs-MeAz = N-para-tosyl-2-methyl-aziridine) was prepared by a sequential polymerization. The desulfonylation of the block copolymer is the first example of the selective removal of a sulfonyl protecting group from a poly(sulfonylazirdine) block copolymer and this is the first formation of a polysufonylaziridine-block-polypropylene imine copolymer. Three-armed star-shaped poly(SES-MeAz)s were also successfully synthesized and exhibited improved solubility compared with linear poly(SES-MeAz)s.
- Research Organization:
- University of Alabama, Tuscaloosa, AL (United States); University of South Alabama, Mobile, AL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC); University of Alabama
- Grant/Contract Number:
- SC0020282
- OSTI ID:
- 1977120
- Journal Information:
- European Polymer Journal, Journal Name: European Polymer Journal Journal Issue: C Vol. 169; ISSN 0014-3057
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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