Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김우재 | * |
dc.date.accessioned | 2019-07-29T16:30:22Z | - |
dc.date.available | 2019-07-29T16:30:22Z | - |
dc.date.issued | 2018 | * |
dc.identifier.issn | 0169-4332 | * |
dc.identifier.issn | 1873-5584 | * |
dc.identifier.other | OAK-25111 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/250234 | - |
dc.description.abstract | Single-walled carbon nanotubes (SWCNTs) can be either metallic or semiconducting, making their separation critical for applications in nanoelectronics, biomedical materials, and solar cells. Herein, we investigate a novel solution-phase separation method based on click chemistry (azide-alkyne Huisgen cycloaddition) and determine its efficiency and scalability. In this method, metallic SWCNTs in metallic/semiconducting SWCNT mixtures are selectively functionalized with alkyne groups by being reacted with 4-propargyloxybenezenediazonium tetrafluoroborate. Subsequently, silica nanoparticles are functionalized with azide groups and reacted with alkyne-bearing metallic SWCNTs in the SWCNT mixture in the presence of a Cu catalyst. As a result, metallic SWCNTs are anchored on silica powder, whereas non-functionalized semiconducting SWCNTs remain in solution. Low-speed centrifugation effectively removes the silica powder with attached metallic SWCNTs, furnishing a solution of highly pure semiconducting SWCNTs, as confirmed by Raman and UV-vis/near-infrared absorption measurements. This novel separation scheme exhibits the advantage of simultaneously separating both metallic and semiconducting SWCNTs from their mixtures, being cost-effective and therefore applicable at an industrial scale. (C) 2017 Elsevier B.V. All rights reserved. | * |
dc.language | English | * |
dc.publisher | ELSEVIER SCIENCE BV | * |
dc.subject | SWCNT separation | * |
dc.subject | sc-SWCNT | * |
dc.subject | m-SWCNT | * |
dc.subject | Click chemistry | * |
dc.subject | Copper catalyst | * |
dc.subject | 1,3 dipolar cycloaddition | * |
dc.title | Large-scale separation of single-walled carbon nanotubes by electronic type using click chemistry | * |
dc.type | Article | * |
dc.relation.volume | 429 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 278 | * |
dc.relation.lastpage | 283 | * |
dc.relation.journaltitle | APPLIED SURFACE SCIENCE | * |
dc.identifier.doi | 10.1016/j.apsusc.2017.06.002 | * |
dc.identifier.wosid | WOS:000415228700042 | * |
dc.author.google | Um, Jo-Eun | * |
dc.author.google | Song, Sun Gu | * |
dc.author.google | Yoo, Pil J. | * |
dc.author.google | Song, Changsik | * |
dc.author.google | Kim, Woo-Jae | * |
dc.contributor.scopusid | 김우재(34770324900) | * |
dc.date.modifydate | 20240322131035 | * |