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Bielawski, Christopher W.
Synthetic Materials & Macromolecules
Research Interests
  • Synthetic chemistry, materials science, polymer chemistry, catalysis, carbon-based materials


Potentiostatically Controlled Olefin Metathesis

DC Field Value Language Ahumada, Guillermo ko Ryu, Yeonkyeong ko Bielawski, Christopher W. ko 2020-12-31T00:27:13Z - 2020-06-29 ko 2020-05 ko
dc.identifier.citation ORGANOMETALLICS, v.39, no.10, pp.1744 - 1750 ko
dc.identifier.issn 0276-7333 ko
dc.identifier.uri -
dc.description.abstract A Ru(II) complex supported by an N-heterocyclic carbene annulated to a redox-active naphthoquinone (NQ) was interrogated using a range of potentiodynamic and potentiostatic electrochemical techniques. The complex exhibited two redox processes, one of which was attributed to the Ru(II)IRu(III) couple (E-1/2 = +1.10 V vs a saturated calomel electrode) and the other to the NQJNIQ(-) couple (E-1/2 = -0.62 V). Using potentiostatic coulometry or bulk electrolysis, the application of a fixed negative potential (-0.9S V) to electrodes placed in a dichloromethane solution containing the complex resulted in a reduction reaction. The complex was quantitatively reduced within minutes, as determined by coulometry, and subsequently oxidized to its initial, neutral form through the application of a relatively positive potential (+0.34 V) over similar periods of time. The interconversion process was found to be reversible and used to modulate a series of ring-closing metathesis and ring-opening metathesis polymerization reactions. While relatively high activities were observed when the neutral form of the catalyst was employed, the reaction rates were attenuated upon in situ, potentiostatic reduction. Toggling between relatively negative or positive potentials enabled the aforementioned olefin metathesis reactions to be switched between fast and slow states. ko
dc.language 영어 ko
dc.publisher AMER CHEMICAL SOC ko
dc.title Potentiostatically Controlled Olefin Metathesis ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85084673217 ko
dc.identifier.wosid 000537685700011 ko
dc.type.rims ART ko
dc.identifier.doi 10.1021/acs.organomet.0c00052 ko
dc.identifier.url ko
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