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Kwon, Min Sang
Rational Molecular Design & Synthesis lab
Research Interests
  • Building molecular design principles for next generation organic emitters

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Highly efficient organic photocatalysts discovered via a computer-aided-design strategy for visible-light-driven atom transfer radical polymerization

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Title
Highly efficient organic photocatalysts discovered via a computer-aided-design strategy for visible-light-driven atom transfer radical polymerization
Author
Singh, Varun KumarYu, ChanghoonBadgujar, SachinKim, YoungmuKwon, YonghwaKim, DoyonLee, JunhyeokAkhter, ToheedThangavel, GurunathanPark, Lee SoonLee, JiseokNandajan, Paramjyothi C.Wannermacher, ReinholdMilián-Medina, BegoñaLüer, LarryKim, Kwang S.Gierschner, JohannesKwon, Min Sang
Issue Date
201810
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE CATALYSIS, v.1, no.10, pp.794 - 804
Abstract
Organocatalysed photoredox-mediated atom transfer radical polymerization (O-ATRP) is a very promising polymerization method as it eliminates concerns associated with transition-metal contamination of polymer products. However, reducing the amount of catalyst and expanding the monomer scope remain major challenges in O-ATRP. Herein, we report a systematic computer-aided-design strategy to identify powerful visible-light photoredox catalysts for O-ATRP. One of our discovered organic photoredox catalysts controls the polymerization of methyl methacrylate at sub-ppm catalyst loadings (0.5 ppm—a very meaningful amount enabling the direct use of polymers without a catalyst removal process); that is, 100–1,000 times lower loadings than other organic photoredox catalysts reported so far. Another organic photoredox catalyst with supra-reducing power in an excited state and high redox stability facilitates the challenging polymerization of the non-acrylic monomer styrene, which is not successful using existing photoredox catalysts. This work provides access to diverse challenging organic/polymer syntheses and makes O-ATRP viable for many industrial and biomedical applications.
URI
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DOI
http://dx.doi.org/10.1038/s41929-018-0156-8
ISSN
2520-1158
Appears in Collections:
SNS_Journal Papers
MSE_Journal Papers
ECHE_Journal Papers

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