2016 Fiscal Year Final Research Report
Control and Applications of Radical Species of Heavier Main Group Elements
| Project Area | Stimuli-responsive Chemical Species for the Creation of Functional Molecules |
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| Project/Area Number |
24109005
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Research Collaborator |
NAKAMURA Yasuyuki
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| Project Period (FY) |
2012-06-28 – 2017-03-31
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| Keywords | ラジカル / リビングラジカル重合 / ラジカルカップリング反応 / 重合停止機構 / 有機テルル化合物 |
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| Outline of Final Research Achievements |
Control of concentration of carbon-centered radicals generated from organotellurium compounds was achieved. Selective switching of reaction course from living radical polymerization (by applying low intensity light) to radical coupling reaction (by applying high intensity light) was achieved by using this control. The termination mechanism of conventional radical polymerization was also unambiguously determined by using photo-activation of organotellurium compounds; a new method based on product analyses in the reaction of polymer-end radicals generated from structurally controlled organotellurium “living” polymers. The termination of acrylate polymerization is determined to be disproportionation (Disp), and the conclusion contradicts to the description in textbooks (combination [Comb]). The mechanism of styrene polymerization is completely reversed from Comb to Disp by changing the viscosity of a reaction media. This is the first example to control the termination reaction. .
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| Free Research Field |
合成化学
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