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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Selective formation of Ag domains on MnO nanooctapods for potential dual imaging probes

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Title
Selective formation of Ag domains on MnO nanooctapods for potential dual imaging probes
Author(s)
Dongwoo Shin; Youngchan Park; Hyein Ryu; Won Seok Seo; Hyunjoon Song
Publication Date
2016-06
Journal
CRYSTENGCOMM, v.18, no.22, pp.4188 - 4195
Publisher
ROYAL SOC CHEMISTRY
Abstract
In the present study, the growth of Ag domains on the surface of MnO octapods yielded a uniform MnO octapod-Ag heterodimer structure by a phase-transfer protocol in toluene. The Ag domains were selectively formed on one of the high index surfaces of the MnO octapods. The resulting MnO-Ag heterodimers have basically two independent domains. On this basis, multiple functions are expected, including plasmon light scattering from the Ag domains and magnetic resonance from the MnO domains. Notably, the heterodimers strongly scattered visible light at 420 nm, and even a single particle signal could be detected in a dark-field spectroscopy image. The scattering peak was extended to the near-IR range by the formation of MnO octapod-AgAu hollow heterodimers via a galvanic replacement reaction. The heterodimers also showed weak ferromagnetism at low temperature, and exhibited a positive T1 signal in magnetic resonance imaging. These properties demonstrate that the MnO-Ag heterodimers can potentially serve as dual imaging probes for biological systems. © 2016 The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/3148
ISSN
1466-8033
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
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