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dc.contributor.authorWang, Chen-Gangen_US
dc.contributor.authorChong, Amerlyn Ming Liingen_US
dc.contributor.authorGoto, Atsushien_US
dc.identifier.citationWang, C., Chong, A. M. L. & Goto, A. (2021). One reagent with two functions : simultaneous living radical polymerization and chain-end substitution for tailoring polymer dispersity. ACS Macro Letters, 10(5), 584-590.
dc.description.abstractMolecular weight distribution of polymer, termed dispersity (Đ), is a fundamental parameter that determines polymer properties. Sodium azide (NaN3) functions as a catalyst in organocatalyzed living radical polymerization when the reaction medium is non-polar. In contrast, NaN3 can act as a nucleophile when the reaction medium is polar. In this paper, we report an efficient approach to dispersity control by exploiting the dual functions of NaN3 under the varied solvent polarity. Simultaneous polymerization and chain-end substitution allowed us to tune the Đ values of various polymethacrylates and poly(butyl acrylate). Notably, the Đ value could be tuned to a wide range approximately from 1.2 to 2.0 for polymethacrylates and to 3.8 for poly(butyl acrylate). This approach afforded polymer brushes on surfaces with tailored Đ values. An interesting finding was that the polymer brushes exhibited a unique interaction with external molecules, depending on the Đ value.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofACS Macro Lettersen_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Macro Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
dc.subjectScience::Chemistry::Organic chemistry::Polymersen_US
dc.titleOne reagent with two functions : simultaneous living radical polymerization and chain-end substitution for tailoring polymer dispersityen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.departmentDivision of Chemistry and Biological Chemistryen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsOrganic Compoundsen_US
dc.description.acknowledgementThis work was supported by National Research Foundation (NRF) Investigatorship in Singapore (NRF-NRFI05-2019-0001).en_US
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