Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박원일 | - |
dc.date.accessioned | 2019-11-24T17:15:06Z | - |
dc.date.available | 2019-11-24T17:15:06Z | - |
dc.date.issued | 2017-04 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v. 9, no. 16, page. 14216-14221 | en_US |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsami.7b00848 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/113761 | - |
dc.description.abstract | We report the role of defects in enzymatic graphene field-effect transistor sensors by introducing engineered defects in graphene channels. Compared with conventional graphene sensors (Gr sensors), graphene mesh sensors (GM sensors), with an array of circular holes, initially exhibited a higher irreversible response to glucose, involving strong chemisorption to edge defects. However, after immobilization of glucose oxidase, the irreversibility of the responses was substantially diminished, without any reduction in the sensitivity of the GM sensors (i.e., -0.53 mV/mM for the GM sensor vs -0.37 mV/mM for Gr sensor). Furthermore, multiple cycle operation led to rapid sensing and improved the reversibility of GM sensors. In addition, control tests with sensors containing a linker showed that sensitivity was increased in Gr sensors but decreased in GM sensors. Our findings indicate that edge defects can be used to replace linkers for immobilization of glucose oxidase and improve charge transfer across glucose oxidase graphene interfaces. | en_US |
dc.description.sponsorship | This work was supported by the National Research Foundation of Korea (NRF), funded by the Korea government (MSIP) (Nos. 201SR1A2A2A11001426, 2016K1A4A3914691, 2016K1A3A1A32913360). S.N. acknowledges support from the Air Force Office of Scientific Research/Asian Office of Aerospace Research Development (AFOSR/AOARD) through the Nano Bio Info Technology (NBIT) Phase III Program (AOARD-13-4125). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | graphene | en_US |
dc.subject | graphene mesh | en_US |
dc.subject | enzymatic sensor | en_US |
dc.subject | edge functionalization | en_US |
dc.subject | multiple cycle operation | en_US |
dc.title | Defect-Mediated Molecular Interaction and Charge Transfer in Graphene Mesh Glucose Sensors | en_US |
dc.type | Article | en_US |
dc.relation.no | 16 | - |
dc.relation.volume | 9 | - |
dc.identifier.doi | 10.1021/acsami.7b00848 | - |
dc.relation.page | 14216-14221 | - |
dc.relation.journal | ACS APPLIED MATERIALS & INTERFACES | - |
dc.contributor.googleauthor | Kwon, Sun Sang | - |
dc.contributor.googleauthor | Shin, Jae Hyeok | - |
dc.contributor.googleauthor | Choi, Jonghyun | - |
dc.contributor.googleauthor | Nam, SungWoo | - |
dc.contributor.googleauthor | Park, Won Il | - |
dc.relation.code | 2017001478 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | wipark | - |
dc.identifier.researcherID | A-8362-2013 | - |
dc.identifier.orcid | http://orcid.org/0000-0001-8312-4815 | - |
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