Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Park, Wooyoung | - |
dc.contributor.author | Jang, Ho Seong | - |
dc.contributor.author | Lee, Kwangyeol | - |
dc.contributor.author | Woo, Kyoungja | - |
dc.date.accessioned | 2024-01-20T10:34:36Z | - |
dc.date.available | 2024-01-20T10:34:36Z | - |
dc.date.created | 2021-09-05 | - |
dc.date.issued | 2014-01 | - |
dc.identifier.issn | 1574-1443 | - |
dc.identifier.uri | https://pubs.kist.re.kr/handle/201004/127265 | - |
dc.description.abstract | Multifunctional 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.language | English | - |
dc.publisher | SPRINGER | - |
dc.subject | IRON-OXIDE NANOPARTICLES | - |
dc.subject | LUMINESCENT NANOCOMPOSITES | - |
dc.subject | MICROSPHERES | - |
dc.subject | NANOCRYSTALS | - |
dc.subject | SPHERES | - |
dc.subject | SURFACE | - |
dc.title | Synthesis of Multifunctional Silica Composites Encapsulating a Mixture Layer of Quantum Dots and Magnetic Nanoparticles | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s10904-013-9988-5 | - |
dc.description.journalClass | 1 | - |
dc.identifier.bibliographicCitation | JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, v.24, no.1, pp.78 - 86 | - |
dc.citation.title | JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | - |
dc.citation.volume | 24 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 78 | - |
dc.citation.endPage | 86 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.wosid | 000330856900008 | - |
dc.identifier.scopusid | 2-s2.0-84927645750 | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | IRON-OXIDE NANOPARTICLES | - |
dc.subject.keywordPlus | LUMINESCENT NANOCOMPOSITES | - |
dc.subject.keywordPlus | MICROSPHERES | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | SPHERES | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordAuthor | Multifunctional silica composite | - |
dc.subject.keywordAuthor | Quantum dot (QD) | - |
dc.subject.keywordAuthor | SPION | - |
dc.subject.keywordAuthor | Enhanced photoluminescence | - |
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