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Phase controlled one-pot synthesis of heterostructured FePt-Fe3O4 nanocubes with excellent biocompatibility

Title
Phase controlled one-pot synthesis of heterostructured FePt-Fe3O4 nanocubes with excellent biocompatibility
Authors
Eom, YunjiKang, YuminKasturi, SatishTorati, Sri RamuluKim, CheolGi
DGIST Authors
Eom, Yunji; Kang, Yumin; Kasturi, Satish; Torati, Sri Ramulu; Kim, CheolGi
Issue Date
2020-12
Citation
RSC Advances, 10(71), 43480-43488
Type
Article
Article Type
Article
Keywords
IMMUNOASSAYFE3O4MAGNETIC NANOPARTICLESFEPT
ISSN
2046-2069
Abstract
We demonstrated a simple one-pot synthesis approach for the controlled composition of homogeneous FePt and phase-controlled heterostructured FePt/Fe3O4 nanocubes (NCs) utilizing 1,2-hexadecanediol and 1-octadecene as the reducing agents, respectively. When the Fe:Pt precursor ratio was varied from 1:1 to 4:1 and 1,2-hexadecanediol was utilized as the reducing agent, homogeneous FePt NCs were formed, whereas the heterostructures of FePt/Fe3O4 NCs were obtained when utilizing 1-octadecene as the reducing agent at Fe:Pt ratio of 4:1. The initial domination of nucleation of Pt-rich species and the subsequent deposition of Fe atoms leads to the formation of homogeneous FePt NCs. Heterostructured FePt/Fe3O4 NCs were obtained by the initial FePt seed formation, which was then followed by the heterogeneous growth of Fe3O4. The heterostructured FePt/Fe3O4 NCs exhibited two phases, i.e., FePt phase with a (111) facet of the fcc and Fe3O4 phase with an inverse cubic spinel structure. Moreover, both the FePt and the FePt/Fe3O4 NCs demonstrated almost negligible coercivity, which confirmed a typical superparamagnetic behavior. Furthermore, the cell viability tests of the FePt and FePt/Fe3O4 NCs demonstrated excellent biocompatibilities. Hence, the NCs could be useful for various biomedical applications, including MRI contrast agents, hyperthermia, and as a label in magnetic biochips. © 2020 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/12724
DOI
10.1039/d0ra06911f
Publisher
Royal Society of Chemistry
Related Researcher
  • Author Kim, CheolGi Lab for NanoBio-MatErials & SpinTronics(nBEST)
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
Files:
Collection:
Department of Physics and ChemistryLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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