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dc.contributor.author이영복-
dc.date.accessioned2018-03-09T05:24:50Z-
dc.date.available2018-03-09T05:24:50Z-
dc.date.issued2013-03-
dc.identifier.citationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 권: 135 호: 12, 페이지: 4636-4639en_US
dc.identifier.issn0002-7863-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/ja4001008-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/44168-
dc.description.abstractIntermediates during the anionic polymerization of styrene were observed using hyperpolarized NMR. Dissolution dynamic nuclear polarization (DNP) of monomers provides a sufficient signal-to-noise ratio for detection of C-13 NMR signals in real time as the reaction progresses. Because of its large chemical shift dispersion, C-13 is well-suited to distinguish and characterize the chemical species that arise during the reaction. At the same time, incorporation of hyperpolarized small-molecule monomers is a unique way to generate polymers that exhibit a transient signal enhancement at the active site. This strategy is applicable despite the decay of the hyperpolarization of the polymer due to rapid spin lattice relaxation. Real-time measurements on polymerization reactions provide both mechanistic and kinetic information without the need for stable isotope labeling of the molecules of interest. These capabilities are orthogonal to currently established methods that separate synthesis and analysis into two steps, making dissolution DNP an attractive method to study polymerization reactions.en_US
dc.description.sponsorshipThe authors thank Dr. Yohannes Rezenom for assistance with the mass spectra. Y.L., HZ., and C.H. thank the American Chemical Society Petroleum Research Fund (501813-ND7) and the National Science Foundation (CHE-0840464) for support. G.S.H. and K.L.W. thank the Welch Foundation for partial support through the W. T. Doherty-Welch Chair (A-0001).en_US
dc.language.isoenen_US
dc.publisherACS AMERICAN CHEMICAL SOCIETYen_US
dc.subjectDYNAMIC NUCLEAR-POLARIZATIONen_US
dc.subjectSTYRENE POLYMERIZATIONen_US
dc.subjectMAGNETIC-RESONANCEen_US
dc.subjectELECTRON-TRANSFERen_US
dc.subjectENHANCED NMRen_US
dc.subjectC-13 NMRen_US
dc.subjectPOLYMERSen_US
dc.subjectSPECTROSCOPYen_US
dc.subjectPOLYSTYRENEen_US
dc.subjectINITIATIONen_US
dc.titleDetection of Living Anionic Species in Polymerization Reactions Using Hyperpolarized NMRen_US
dc.typeArticleen_US
dc.relation.no12-
dc.relation.volume135-
dc.identifier.doi10.1021/ja4001008-
dc.relation.page4636-4639-
dc.relation.journalJOURNAL OF THE AMERICAN CHEMICAL SOCIETY-
dc.contributor.googleauthorLee, Youngbok-
dc.contributor.googleauthorHeo, GyuSeong-
dc.contributor.googleauthorZeng, Haifeng-
dc.contributor.googleauthorWooley, Karen L-
dc.contributor.googleauthorHilty, Christian-
dc.relation.code2013011017-
dc.sector.campusS-
dc.sector.daehakGRADUATE SCHOOL[S]-
dc.sector.departmentDEPARTMENT OF BIONANOTECHNOLOGY-
dc.identifier.pidyblee-
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GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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