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Son, Jae Sung
Nanomaterials Science and Engineering Lab (NSE)
Research Interests
  • Nanoparticle, 3D printing, Thermoelectrics, Electronics

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Simple and Generalized Synthesis of Oxide-Metal Heterostructured Nanoparticles and their Applications in Multimodal Biomedical Probes

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Title
Simple and Generalized Synthesis of Oxide-Metal Heterostructured Nanoparticles and their Applications in Multimodal Biomedical Probes
Author
Choi, Sang-HyunNa, Hyon BinPark, Yong IlAn, KwangjinKwon, Soon GuJang, YoungjinPark, Mi-hyunMoon, JaewonSon, Jae SungSong, In ChanMoon, Woo KyungHyeon, Taeghwan
Issue Date
2008-11
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.130, no.46, pp.15573 - 15580
Abstract
Heterostructured nanoparticles composed of metals and Fe3O 4 or MnO were synthesized by thermal decomposition of mixtures of metal-oleate complexes (for the oxide component) and metal-oleylamine complexes (for the metal component). The products included flowerlike-shaped nanoparticles of Pt-Fe3O4 and Ni-Fe3O4 and snowmanlike-shaped nanoparticles of Ag-MnO and Au-MnO. Powder X-ray diffraction patterns showed that these nanoparticles were composed of face-centered cubic (fcc)-structured Fe3O4 or MnO and fcc-structured metals. The relaxivity values of the Au-MnO and Au-Fe3O4 nanoparticles were similar to those of the MnO and Fe3O4 nanoparticles, respectively. Au-Fe3O4 heterostructured nanoparticles conjugated with two kinds of 12-base oligonucleotide sequences were able to sense a complementary 24-mer sequence, causing nanoparticle aggregation. This hybridization-mediated aggregation was detected by the overall size increase indicated by dynamic light scattering data, the red shift of the surface plasmon band of the Au component, and the enhancement of the signal intensity of the Fe3O4 component in T2-weighted magnetic resonance imaging.
URI
https://scholarworks.unist.ac.kr/handle/201301/9732
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=56449098843
DOI
10.1021/ja805311x
ISSN
0002-7863
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ECHE_Journal Papers
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