DC Field | Value | Language |
---|---|---|
dc.contributor.author | Paek, Kwanyeul | ko |
dc.contributor.author | Yang, Hyun Seung | ko |
dc.contributor.author | Lee, Junhyuk | ko |
dc.contributor.author | Park, Junwoo | ko |
dc.contributor.author | Kim, Bumjoon | ko |
dc.date.accessioned | 2014-09-01T07:42:05Z | - |
dc.date.available | 2014-09-01T07:42:05Z | - |
dc.date.created | 2014-05-13 | - |
dc.date.created | 2014-05-13 | - |
dc.date.issued | 2014-03 | - |
dc.identifier.citation | ACS NANO, v.8, no.3, pp.2848 - 2856 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/10203/189319 | - |
dc.description.abstract | In this paper, we report the development of a versatile platform for a highly efficient and stable graphene oxide (GO)-based optical sensor that exhibits distinctive ratiometric color responses. To demonstrate the applicability of the platform, we fabricated a colorimetric, GO-based pH sensor that responds to a wide range of pH changes. Our sensing system is based on responsive polymer and quantum dot (QD) hybrids integrated on a single GO sheet (MQD-GO), with the GO providing an excellent signal-to-noise ratio and high dispersion stability in water. The photoluminescence emissions of the blue and orange color-emitting QDs (BQDs and OQDs) in MOD-GO can be controlled independently by different pH-responsive linkers of poly(acrylic acid) (PAA) (pK(a) = 4.5) and poly(2-vinylpyridine) (P2VP) (pK(a) = 3.0) that can tune the efficiencies of Forster resonance energy transfer from the BQDs to the GO and from the OQDs to the GO, respectively. As a result, the color of MOD-GO changes from orange to near-white to blue over a wide range of pH values. The detailed mechanism of the pH-dependent response of the MQD-GO sensor was elucidated by measurements of time-resolved fluorescence and dynamic light scattering. Furthermore, the MOD-GO sensor showed excellent reversibility and high dispersion stability in pure water, indicating that our system is an ideal platform for biological and environmental applications. Our colorimetric GO-based optical sensor can be expanded easily to various other multifunctional, GO-based sensors by using alternate stimuli-responsive polymers. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | RESONANCE ENERGY-TRANSFER | - |
dc.subject | RAFT POLYMERIZATION | - |
dc.subject | DRUG-DELIVERY | - |
dc.subject | FLUORESCENCE | - |
dc.subject | WATER | - |
dc.subject | NANOPARTICLES | - |
dc.subject | NANOCRYSTALS | - |
dc.subject | TEMPERATURE | - |
dc.subject | MICELLES | - |
dc.subject | DESIGN | - |
dc.title | Efficient Colorimetric pH Sensor Based on Responsive Polymer–Quantum Dot Integrated Graphene Oxide | - |
dc.type | Article | - |
dc.identifier.wosid | 000333539400102 | - |
dc.identifier.scopusid | 2-s2.0-84896999250 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 2848 | - |
dc.citation.endingpage | 2856 | - |
dc.citation.publicationname | ACS NANO | - |
dc.identifier.doi | 10.1021/nn406657b | - |
dc.contributor.localauthor | Kim, Bumjoon | - |
dc.contributor.nonIdAuthor | Lee, Junhyuk | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | colorimetric sensor | - |
dc.subject.keywordAuthor | pH sensor | - |
dc.subject.keywordAuthor | graphene oxide | - |
dc.subject.keywordAuthor | responsive polymer | - |
dc.subject.keywordAuthor | quantum dot | - |
dc.subject.keywordPlus | RESONANCE ENERGY-TRANSFER | - |
dc.subject.keywordPlus | RAFT POLYMERIZATION | - |
dc.subject.keywordPlus | DRUG-DELIVERY | - |
dc.subject.keywordPlus | FLUORESCENCE | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | MICELLES | - |
dc.subject.keywordPlus | DESIGN | - |
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