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dc.contributor.authorPark, Wooyoung-
dc.contributor.authorJang, Ho Seong-
dc.contributor.authorLee, Kwangyeol-
dc.contributor.authorWoo, Kyoungja-
dc.date.accessioned2024-01-20T10:34:36Z-
dc.date.available2024-01-20T10:34:36Z-
dc.date.created2021-09-05-
dc.date.issued2014-01-
dc.identifier.issn1574-1443-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/127265-
dc.description.abstractMultifunctional silica colloidal composites with enhanced photoluminescence (PL) and superparamagnetism are reported. Enhanced PL and superparamagnetism were achieved by encapsulating a mixture layer of quantum dots (QDs) and superparamagnetic iron oxide nanoparticles (SPIONs) within a silica sphere, wherein QDs and SPIONs were capped by 3-mercaptopropionic acid (MPA) and 2-carboxy ethyl phosphonic acid (CEPA), respectively. The silica composites encapsulating a mixture layer of QDs and SPIONs, i.e., S(Q,M)S core(layer)shell architectures with various diameters (80, 360, and 900 nm) were successfully prepared by utilizing electrostatic interaction between positively charged amine-functionalized silica (S) and negatively charged mixture of QD-MPA (Q) and SPION-CEPA (M) and then, by forming a silica shell of 10-20 nm. The S(Q,M)S showed more than twice higher PL intensity than MPA-capped QD with the same QD concentration. Increasing the molar ratio of M/Q from 0.02 to 0.05 in the S(Q,M)S increased the saturation magnetization value from 0.15 to 0.62 emu/g. The S(Q,M)S composites with enhanced PL intensity and superparamagnetism are expected to be a plausible probe material for bioimaing and sensing application. Also, the current synthetic strategy for S(Q,M)S composites is expected to be extendible to include other functional nanoparticles.-
dc.languageEnglish-
dc.publisherSPRINGER-
dc.subjectIRON-OXIDE NANOPARTICLES-
dc.subjectLUMINESCENT NANOCOMPOSITES-
dc.subjectMICROSPHERES-
dc.subjectNANOCRYSTALS-
dc.subjectSPHERES-
dc.subjectSURFACE-
dc.titleSynthesis of Multifunctional Silica Composites Encapsulating a Mixture Layer of Quantum Dots and Magnetic Nanoparticles-
dc.typeArticle-
dc.identifier.doi10.1007/s10904-013-9988-5-
dc.description.journalClass1-
dc.identifier.bibliographicCitationJOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, v.24, no.1, pp.78 - 86-
dc.citation.titleJOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS-
dc.citation.volume24-
dc.citation.number1-
dc.citation.startPage78-
dc.citation.endPage86-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000330856900008-
dc.identifier.scopusid2-s2.0-84927645750-
dc.relation.journalWebOfScienceCategoryPolymer Science-
dc.relation.journalResearchAreaPolymer Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusIRON-OXIDE NANOPARTICLES-
dc.subject.keywordPlusLUMINESCENT NANOCOMPOSITES-
dc.subject.keywordPlusMICROSPHERES-
dc.subject.keywordPlusNANOCRYSTALS-
dc.subject.keywordPlusSPHERES-
dc.subject.keywordPlusSURFACE-
dc.subject.keywordAuthorMultifunctional silica composite-
dc.subject.keywordAuthorQuantum dot (QD)-
dc.subject.keywordAuthorSPION-
dc.subject.keywordAuthorEnhanced photoluminescence-
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