Enzyme-conjugated CdSe/ZnS quantum dot biosensors for glucose detection
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, G.-I. | - |
dc.contributor.author | Sung, Y.-M. | - |
dc.date.accessioned | 2021-09-09T00:26:31Z | - |
dc.date.available | 2021-09-09T00:26:31Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2009 | - |
dc.identifier.issn | 1225-0562 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/121898 | - |
dc.description.abstract | Conjugated nanocrystals using CdSe/ZnS core/shell nanocrystal quantum dots modified by organic linkers and glucose oxidase (GOx) were prepared for use as biosensors. The trioctylphophine oxide (TOPO)-capped QDs were first modified to give them water-solubility by terminal carboxyl groups that were bonded to the amino groups of GOx through an EDC/NHS coupling reaction. As the glucose concentration increased, the photoluminescence intensity was enhanced linearly due to the electron transfer during the enzymatic reaction. The UV-visible spectra of the as-prepared QDs are identical to that of QDs-MAA. This shows that these QDs do not become agglomerated during ligand exchanges. A photoluminescence (PL) spectroscopic study showed that the PL intensity of the QDs-GOx bioconjugates was increased in the presence of glucose. These glucose sensors showed linearity up to approximately 15 mM and became gradually saturated above 15 mM because the excess glucose did not affect the enzymatic oxidation reaction past that amount. These biosensors show highly sensitive variation in terms of their photoluminescence depending on the glucose concentration. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.subject | Amino group | - |
dc.subject | Bioconjugates | - |
dc.subject | Carboxyl groups | - |
dc.subject | CdSe/ZnS | - |
dc.subject | CdSe/ZnS core/shell | - |
dc.subject | CdSe/ZnS quantum dots | - |
dc.subject | Coupling reaction | - |
dc.subject | Electron transfer | - |
dc.subject | Enzymatic oxidations | - |
dc.subject | Enzymatic reaction | - |
dc.subject | Glucose concentration | - |
dc.subject | Glucose detection | - |
dc.subject | Highly sensitive | - |
dc.subject | Ligand exchange | - |
dc.subject | Ligand exchanges | - |
dc.subject | Organic linkers | - |
dc.subject | Photoluminescence intensities | - |
dc.subject | Photoluminescense(PL) | - |
dc.subject | PL intensity | - |
dc.subject | Quantum Dot | - |
dc.subject | Spectroscopic studies | - |
dc.subject | UV-Visible spectra | - |
dc.subject | Water solubilities | - |
dc.subject | Amines | - |
dc.subject | Biosensors | - |
dc.subject | Glucose | - |
dc.subject | Glucose oxidase | - |
dc.subject | Glucose sensors | - |
dc.subject | Ligands | - |
dc.subject | Nanocrystals | - |
dc.subject | Optical waveguides | - |
dc.subject | Photoluminescence | - |
dc.subject | Signal transduction | - |
dc.subject | Spectroscopic analysis | - |
dc.subject | Semiconductor quantum dots | - |
dc.title | Enzyme-conjugated CdSe/ZnS quantum dot biosensors for glucose detection | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Sung, Y.-M. | - |
dc.identifier.doi | 10.3740/MRSK.2009.19.1.044 | - |
dc.identifier.scopusid | 2-s2.0-68649099014 | - |
dc.identifier.bibliographicCitation | Korean Journal of Materials Research, v.19, no.1, pp.44 - 49 | - |
dc.relation.isPartOf | Korean Journal of Materials Research | - |
dc.citation.title | Korean Journal of Materials Research | - |
dc.citation.volume | 19 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 44 | - |
dc.citation.endPage | 49 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART001313268 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.subject.keywordPlus | Amino group | - |
dc.subject.keywordPlus | Bioconjugates | - |
dc.subject.keywordPlus | Carboxyl groups | - |
dc.subject.keywordPlus | CdSe/ZnS | - |
dc.subject.keywordPlus | CdSe/ZnS core/shell | - |
dc.subject.keywordPlus | CdSe/ZnS quantum dots | - |
dc.subject.keywordPlus | Coupling reaction | - |
dc.subject.keywordPlus | Electron transfer | - |
dc.subject.keywordPlus | Enzymatic oxidations | - |
dc.subject.keywordPlus | Enzymatic reaction | - |
dc.subject.keywordPlus | Glucose concentration | - |
dc.subject.keywordPlus | Glucose detection | - |
dc.subject.keywordPlus | Highly sensitive | - |
dc.subject.keywordPlus | Ligand exchange | - |
dc.subject.keywordPlus | Ligand exchanges | - |
dc.subject.keywordPlus | Organic linkers | - |
dc.subject.keywordPlus | Photoluminescence intensities | - |
dc.subject.keywordPlus | Photoluminescense(PL) | - |
dc.subject.keywordPlus | PL intensity | - |
dc.subject.keywordPlus | Quantum Dot | - |
dc.subject.keywordPlus | Spectroscopic studies | - |
dc.subject.keywordPlus | UV-Visible spectra | - |
dc.subject.keywordPlus | Water solubilities | - |
dc.subject.keywordPlus | Amines | - |
dc.subject.keywordPlus | Biosensors | - |
dc.subject.keywordPlus | Glucose | - |
dc.subject.keywordPlus | Glucose oxidase | - |
dc.subject.keywordPlus | Glucose sensors | - |
dc.subject.keywordPlus | Ligands | - |
dc.subject.keywordPlus | Nanocrystals | - |
dc.subject.keywordPlus | Optical waveguides | - |
dc.subject.keywordPlus | Photoluminescence | - |
dc.subject.keywordPlus | Signal transduction | - |
dc.subject.keywordPlus | Spectroscopic analysis | - |
dc.subject.keywordPlus | Semiconductor quantum dots | - |
dc.subject.keywordAuthor | CdSe/ZnS quantum dots | - |
dc.subject.keywordAuthor | Glucose oxidase(GOx) | - |
dc.subject.keywordAuthor | Ligand exchange | - |
dc.subject.keywordAuthor | Photoluminescense(PL) | - |
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