Author
Tsuyoshi Ando
Other affiliations: Nara Institute of Science and Technology
Bio: Tsuyoshi Ando is an academic researcher from Kyoto University. The author has contributed to research in topics: Radical polymerization & Polymerization. The author has an hindex of 26, co-authored 36 publications receiving 5788 citations. Previous affiliations of Tsuyoshi Ando include Nara Institute of Science and Technology.
Papers
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3,096 citations
TL;DR: In this article, it was shown that the Fe(II) complex is effective in the homolytic and reversible cleavage of the carbon−halogen terminal originating from the halide initiators into a transient radical growing species to induce living MMA polymerization.
Abstract: Iron(II) bis(triphenylphosphine)dichloride [FeCl2(PPh3)2] induced living radical polymerization of methyl methacrylate (MMA) in conjunction with organic halides as initiators [R−X: CCl4, CHCl2COPh, (CH3)2CBrCO2C2H5, and CH3CBr(CO2C2H5)2] in the absence or presence of Al(OiPr)3 in toluene at 80 °C. The added aluminum compounds were not needed for the Fe(II)-mediated living polymerization unlike the RuCl2(PPh3)3-based counterpart. With CH3CBr(CO2C2H5)2 as initiator, the number-average molecular weights of polymers increased in direct proportion to monomer conversion, and the MWDs were narrow throughout the reactions (Mw/Mn = 1.1−1.3). The polymers possessed one initiator moiety at the α-end per one polymer chain. The tacticity was similar to that prepared by AIBN. These results indicate that the Fe(II) complex is effective in the homolytic and reversible cleavage of the carbon−halogen terminal originating from the halide initiators into a transient radical growing species to induce living MMA polymerization.
427 citations
246 citations
183 citations
TL;DR: The "cation pool" of an N-acyliminium ion was found to serve as an effective initiator of cationic polymerization of vinyl ethers in a microsystem consisting of two micromixers and a microtube reactor.
Abstract: The "cation pool" of an N-acyliminium ion was found to serve as an effective initiator of cationic polymerization of vinyl ethers in a microsystem consisting of two micromixers and a microtube reactor. The polymerization led to very narrow molecular weight distribution (Mw/Mn = 1.14). The molecular weight (Mn) increased linearly with an increase in the amount of the monomer. The carbocationic polymer end was effectively trapped by allyltrimethylsilane. The present observations illustrate the potential of microsystems, in conjunction with the cation pool, to effect polymerization in a highly controlled manner without the deceleration inherent in the dynamic equilibrium between active and dormant species.
173 citations
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6,927 citations
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3,096 citations
TL;DR: In this article, a review of recent mechanistic developments in the field of controlled/living radical polymerization (CRP) is presented, with particular emphasis on structure-reactivity correlations and "rules" for catalyst selection in ATRP, for chain transfer agent selection in reversible addition-fragmentation chain transfer (RAFT) polymerization, and for the selection of an appropriate mediating agent in stable free radical polymerisation (SFRP), including organic and transition metal persistent radicals.
2,869 citations
TL;DR: The current status and future perspectives in atom transfer radical polymerization (ATRP) are presented in this paper, with a special emphasis on mechanistic understanding of ATRP, recent synthetic and process development, and new controlled polymer architectures enabled by ATRP.
Abstract: Current status and future perspectives in atom transfer radical polymerization (ATRP) are presented. Special emphasis is placed on mechanistic understanding of ATRP, recent synthetic and process development, and new controlled polymer architectures enabled by ATRP. New hybrid materials based on organic/inorganic systems and natural/synthetic polymers are presented. Some current and forthcoming applications are described.
2,188 citations