期刊
ACS MACRO LETTERS
卷 6, 期 10, 页码 1071-1077出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.7b00572
关键词
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资金
- Chateaubriand Fellowship Program
- National Science Foundation [DMR-1606410, DGE-1315138]
- French Ministry of Research
- French National Research Agency [ANR-15-CE08-0019]
- Agence Nationale de la Recherche (ANR) [ANR-15-CE08-0019] Funding Source: Agence Nationale de la Recherche (ANR)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1606410] Funding Source: National Science Foundation
Radical copolymerization of donor acceptor (D-A) monomer pairs has served as a versatile platform for the development of alternating copolymers. However, due to the use of conventional radical polymerization, the resulting copolymers have generally been limited to nondegradable vinyl polymers. By combining radical D-A copolymerization with radical ring-opening polymerization (rROP), we have synthesized an alternating copolymer with a high incorporation of degradable backbone units. Copolymerization of N-ethyl maleimide (NEtMI) with the cyclic ketene acetal (CKA) 2-methylene4-phenyl-1,3-dioxolane (MPDL) was demonstrated to proceed in an alternating fashion, and controlled polymerization was achieved using reversible addition fragmentation chain transfer (RAFT) polymerization. Spontaneous copolymerization, in the absence of an exogenous initiating source, occurred when the mixture of monomers was heated, presumably due to the large electron disparity between the comonomers. Chain-extension with styrene afforded well-defined P(MPDL-alt-NEtMI)-b-polystyrene copolymers, and degradation of the homopolymers and block copolymers showed complete breakdown of the alternating copolymer.
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