Sensitive optical bio-sensing of p-type WSe2 hybridized with fluorescent dye attached DNA by doping and de-doping effects
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Kyu Hyun | - |
dc.contributor.author | Kim, Jun Young | - |
dc.contributor.author | Jo, Seong Gi | - |
dc.contributor.author | Seo, Changwon | - |
dc.contributor.author | Kim, Jeongyong | - |
dc.contributor.author | Joo, Jinsoo | - |
dc.date.accessioned | 2021-09-03T00:01:31Z | - |
dc.date.available | 2021-09-03T00:01:31Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2017-10-27 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/81857 | - |
dc.description.abstract | Layered transition metal dichalcogenides, such as MoS2, WSe2 and WS2, are exciting twodimensional (2D) materials because they possess tunable optical and electrical properties that depend on the number of layers. In this study, the nanoscale photoluminescence (PL) characteristics of the p-type WSe2 monolayer, and WSe2 layers hybridized with the fluorescent dye Cy3 attached to probe-DNA (Cy3/p-DNA), have been investigated as a function of the concentration of Cy3/DNA by using high-resolution laser confocal microscopy. With increasing concentration of Cy3/p-DNA, the measured PL intensity decreases and its peak is red-shifted, suggesting that the WSe2 layer has been p-type doped with Cy3/p-DNA. Then, the PL intensity of the WSe2/Cy3/p-DNA hybrid system increases and the peak is blue-shifted through hybridization with relatively small amounts of target-DNA (t-DNA) (50-100 nM). This effect originates from charge and energy transfer from the Cy3/DNA to the WSe2. For t-DNA detection, our systems using p-type WSe2 have the merit in terms of the increase of PL intensity. The p-type WSe2 monolayers can be a promising nanoscale 2D material for sensitive optical biosensing based on the doping and de-doping responses to biomaterials. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | CHARGE-TRANSFER | - |
dc.subject | MONOLAYER MOS2 | - |
dc.subject | WS2 NANOSHEET | - |
dc.subject | QUANTUM DOTS | - |
dc.subject | PHOTOLUMINESCENCE | - |
dc.subject | EMISSION | - |
dc.subject | SURFACE | - |
dc.subject | CY5 | - |
dc.title | Sensitive optical bio-sensing of p-type WSe2 hybridized with fluorescent dye attached DNA by doping and de-doping effects | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Joo, Jinsoo | - |
dc.identifier.doi | 10.1088/1361-6528/aa8889 | - |
dc.identifier.scopusid | 2-s2.0-85031125771 | - |
dc.identifier.wosid | 000411821300001 | - |
dc.identifier.bibliographicCitation | NANOTECHNOLOGY, v.28, no.43 | - |
dc.relation.isPartOf | NANOTECHNOLOGY | - |
dc.citation.title | NANOTECHNOLOGY | - |
dc.citation.volume | 28 | - |
dc.citation.number | 43 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | CHARGE-TRANSFER | - |
dc.subject.keywordPlus | MONOLAYER MOS2 | - |
dc.subject.keywordPlus | WS2 NANOSHEET | - |
dc.subject.keywordPlus | QUANTUM DOTS | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | CY5 | - |
dc.subject.keywordAuthor | transition metal dichalcogenide | - |
dc.subject.keywordAuthor | WSe2 | - |
dc.subject.keywordAuthor | photoluminescence | - |
dc.subject.keywordAuthor | bio-sensing | - |
dc.subject.keywordAuthor | doping | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.