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dc.contributor.author이상욱-
dc.date.accessioned2022-11-28T00:53:05Z-
dc.date.available2022-11-28T00:53:05Z-
dc.date.issued2018-04-
dc.identifier.citationSmall, v. 14.0, NO. 16, article no. 1800026, Page. 1-10-
dc.identifier.issn1613-6810;1613-6829-
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1002/smll.201800026en_US
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/177517-
dc.description.abstractThere is an increasing demand for control over the dimensions and functions of transition metal dichalcogenides (TMDs) in aqueous solution toward biological and medical applications. Herein, an approach for the exfoliation and functionalization of TMDs in water via modulation of the hydrophobic interaction between poly(epsilon-caprolactone)-b-poly(ethylene glycol) (PCL-b-PEG) and the basal planes of TMDs is reported. Decreasing the hydrophobic PCL length of PCL-b-PEG from 5000 g mol(-1) (PCL5000) to 460 g mol(-1) (PCL460) significantly increases the exfoliation efficiency of TMD nanosheets because the polymer-TMD hydrophobic interaction becomes dominant over the polymer-polymer interaction. The TMD nanosheets exfoliated by PCL460-b-PEG(5000) (460-WS2, 460-WSe2, 460-MoS2, and 460-MoSe2) show excellent and prolonged scavenging activity for reactive oxygen species (ROS), but each type of TMD displays a different scavenging tendency against hydroxyl, superoxide, and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radicals. A mechanistic study based on electron paramagnetic resonance spectroscopy and density functional theory simulations suggests that radical-mediated oxidation of TMDs and hydrogen transfer from the oxidized TMDs to radicals are crucial steps for ROS scavenging by TMD nanosheets. As-prepared 460-TMDs are able to effectively scavenge ROS in HaCaT human keratinocytes, and also exhibit excellent biocompatibility.-
dc.description.sponsorshipD.Y. and J.E.K. contributed equally to this work. This work was supported by Amore-Pacific R&D Center and the Basic Science Research Program (NRF-2017R1A2B2008455, NRF-2016R1A2B2016148, NRF-2015R1C1A1A02036670, and 2008-0061891) and the Creative Materials Discovery Program on Creative Multilevel Research Center (2015M3D1A1068062) grants through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT. This work was also supported by the Supercomputing Center/Korea Institute of Science and Technology Information with supercomputing resources including technical support (KSC-2017-C3-0032).-
dc.languageen-
dc.publisherWiley - V C H Verlag GmbbH & Co.-
dc.subjectantioxidant effects-
dc.subjectaqueous exfoliation-
dc.subjectradical oxygen species-
dc.subjectROS scavenging-
dc.subjecttransition metal dichalcogenides-
dc.titleAdjustable Intermolecular Interactions Allowing 2D Transition Metal Dichalcogenides with Prolonged Scavenging Activity for Reactive Oxygen Species-
dc.typeArticle-
dc.relation.no16-
dc.relation.volume14.0-
dc.identifier.doi10.1002/smll.201800026-
dc.relation.page1-10-
dc.relation.journalSmall-
dc.contributor.googleauthorYim, DaBin-
dc.contributor.googleauthorKim, Ji Eun-
dc.contributor.googleauthorKim, Hye-In-
dc.contributor.googleauthorYang, Jin-Kyoung-
dc.contributor.googleauthorKang, Tae-Woog-
dc.contributor.googleauthorNam, Jin-
dc.contributor.googleauthorHan, Sang Hoon-
dc.contributor.googleauthorJun, Byeongsun-
dc.contributor.googleauthorLee, Chi Ho-
dc.contributor.googleauthorLee, Sang Uck-
dc.contributor.googleauthorKim, Jin Woong-
dc.contributor.googleauthorKim, Jong-Ho-
dc.sector.campusE-
dc.sector.daehak과학기술융합대학-
dc.sector.department화학분자공학과-
dc.identifier.pidsulee-
dc.identifier.article1800026-


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