The Control of Living Anionic Polymerization by Metalloporphyrins
- 1 May 1995
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 68 (5) , 1239-1246
- https://doi.org/10.1246/bcsj.68.1239
Abstract
The living polymerization of methacrylic esters initiated with aluminium porphyrins was found to be dramatically accelerated upon the addition of organoaluminium or organoboron compounds as a Lewis acidic monomer activator (high-speed living polymerization). Under appropriate conditions, high-molecular-weight poly(methyl methacrylates) (Mn > 500000) having a narrow molecular-weight distribution (Mw/Mn = 1.1—1.2) were synthesized. The key concept of the high-speed living polymerization is the coexistence of nucleophilic growing species and a Lewis acid without a degradative direct reaction.Keywords
This publication has 13 references indexed in Scilit:
- Lewis acid-promoted living anionic polymerization of alkyl methacrylates initiated with aluminum porphyrins. Importance of steric balance between a nucleophile and a Lewis acidMacromolecules, 1994
- High-Speed "Immortal" Polymerization of Epoxides Initiated with Aluminum Porphyrin. Acceleration of Propagation and Chain-Transfer Reactions by a Lewis AcidMacromolecules, 1994
- Organoboron compounds as Lewis acid accelerators for the aluminum porphyrin-mediated living anionic polymerization of methyl methacrylateMacromolecules, 1993
- High-speed living anionic polymerization of methacrylic esters with aluminum porphyrin initiators. Organoaluminum compounds as Lewis acid acceleratorsMacromolecules, 1993
- Aluminum thiolate complexes of porphyrin as excellent initiators for Lewis acid-assisted high-speed living polymerization of methyl methacrylateMacromolecules, 1993
- Controlled synthesis of high molecular weight poly(methyl methacrylate) based on Lewis acid-assisted high-speed living polymerization initiated with aluminum porphyrinMacromolecules, 1992
- Controlled synthesis of poly(acrylic esters) by aluminum porphyrin initiatorsMacromolecules, 1991
- Ring-opening polymerizations of lactone and epoxide initiated with aluminum complexes of substituted tetraphenylporphyrins. Molecular design of highly active initiatorsMacromolecules, 1990
- Novel photoinduced carbon-carbon bond formation via metal-alkyl and -enolate porphyrins-visible light-mediated polymerization of alkyl methacrylate catalyzed by aluminum porphyrinJournal of the American Chemical Society, 1987
- Synthesis of polyester-polyether block copolymer with controlled chain length from β-lactone and epoxide by aluminum porphyrin catalystMacromolecules, 1984