Substituent effect of Fe(β-diketonate)3on the control of self-assembly FePt-based nanoparticles

K. Chokprasombat; P. Harding; C. Sirisathitkul; W. Tangwatanakul; S. Pinitsoontorn; P. Muneesawang

doi:10.1007/s11051-014-2436-9

Substituent effect of Fe(β-diketonate)₃on the control of self-assembly FePt-based nanoparticles

K. Chokprasombat
, P. Harding
, C. Sirisathitkul
, W. Tangwatanakul
, S. Pinitsoontorn
, P. Muneesawang

Walailak University
Faculty of Science, Khon Kaen University
Naresuan University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Three Fe(β-diketonate)₃ compounds namely Fe(tmhd) ₃ (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionato), Fe(hfac) ₃ (hfac = hexafluoroacetylaceto), and Fe(dbm)₃ (dbm = dibenzoylmethane) were used as substitutes to Fe(acac)₃ (acac = acetyleacetonate) in the synthesis of FePt nanoparticles. The obtained superparamagnetic nanoparticles are 4-5 nm in diameter without showing a large size variation with substituent Fe(β-diketonate)₃. The synchrotron X-ray absorption spectroscopy confirmed the energy dispersive spectroscopy that as-synthesized nanoparticles were composed of iron oxides and metallic FePt₃ alloys. By employing Fe(hfac)₃, the Fe fraction was reduced and the magnetization was modest. The use of Fe(dbm) ₃ as starting materials gave rise to densely packed FePt ₃/Fe₂O₃ heterodimers. The replacements of Fe(acac)₃ by Fe(tmhd)₃ led to the long-range order of nanoparticle assembly with the narrowest size distribution.

Original language	English
Article number	2436
Journal	Journal of Nanoparticle Research
Volume	16
Issue number	6
DOIs	https://doi.org/10.1007/s11051-014-2436-9
Publication status	Published - Jun 2014
Externally published	Yes

Keywords

EXAFS
Iron platinum
Magnetic nanoparticles
XANES

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10.1007/s11051-014-2436-9

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title = "Substituent effect of Fe(β-diketonate)3on the control of self-assembly FePt-based nanoparticles",

abstract = "Three Fe(β-diketonate)3 compounds namely Fe(tmhd) 3 (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionato), Fe(hfac) 3 (hfac = hexafluoroacetylaceto), and Fe(dbm)3 (dbm = dibenzoylmethane) were used as substitutes to Fe(acac)3 (acac = acetyleacetonate) in the synthesis of FePt nanoparticles. The obtained superparamagnetic nanoparticles are 4-5 nm in diameter without showing a large size variation with substituent Fe(β-diketonate)3. The synchrotron X-ray absorption spectroscopy confirmed the energy dispersive spectroscopy that as-synthesized nanoparticles were composed of iron oxides and metallic FePt3 alloys. By employing Fe(hfac)3, the Fe fraction was reduced and the magnetization was modest. The use of Fe(dbm) 3 as starting materials gave rise to densely packed FePt 3/Fe2O3 heterodimers. The replacements of Fe(acac)3 by Fe(tmhd)3 led to the long-range order of nanoparticle assembly with the narrowest size distribution.",

keywords = "EXAFS, Iron platinum, Magnetic nanoparticles, XANES",

author = "K. Chokprasombat and P. Harding and C. Sirisathitkul and W. Tangwatanakul and S. Pinitsoontorn and P. Muneesawang",

year = "2014",

month = jun,

doi = "10.1007/s11051-014-2436-9",

language = "English",

volume = "16",

journal = "Journal of Nanoparticle Research",

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T1 - Substituent effect of Fe(β-diketonate)3on the control of self-assembly FePt-based nanoparticles

AU - Chokprasombat, K.

AU - Harding, P.

AU - Sirisathitkul, C.

AU - Tangwatanakul, W.

AU - Pinitsoontorn, S.

AU - Muneesawang, P.

PY - 2014/6

Y1 - 2014/6

N2 - Three Fe(β-diketonate)3 compounds namely Fe(tmhd) 3 (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionato), Fe(hfac) 3 (hfac = hexafluoroacetylaceto), and Fe(dbm)3 (dbm = dibenzoylmethane) were used as substitutes to Fe(acac)3 (acac = acetyleacetonate) in the synthesis of FePt nanoparticles. The obtained superparamagnetic nanoparticles are 4-5 nm in diameter without showing a large size variation with substituent Fe(β-diketonate)3. The synchrotron X-ray absorption spectroscopy confirmed the energy dispersive spectroscopy that as-synthesized nanoparticles were composed of iron oxides and metallic FePt3 alloys. By employing Fe(hfac)3, the Fe fraction was reduced and the magnetization was modest. The use of Fe(dbm) 3 as starting materials gave rise to densely packed FePt 3/Fe2O3 heterodimers. The replacements of Fe(acac)3 by Fe(tmhd)3 led to the long-range order of nanoparticle assembly with the narrowest size distribution.

AB - Three Fe(β-diketonate)3 compounds namely Fe(tmhd) 3 (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionato), Fe(hfac) 3 (hfac = hexafluoroacetylaceto), and Fe(dbm)3 (dbm = dibenzoylmethane) were used as substitutes to Fe(acac)3 (acac = acetyleacetonate) in the synthesis of FePt nanoparticles. The obtained superparamagnetic nanoparticles are 4-5 nm in diameter without showing a large size variation with substituent Fe(β-diketonate)3. The synchrotron X-ray absorption spectroscopy confirmed the energy dispersive spectroscopy that as-synthesized nanoparticles were composed of iron oxides and metallic FePt3 alloys. By employing Fe(hfac)3, the Fe fraction was reduced and the magnetization was modest. The use of Fe(dbm) 3 as starting materials gave rise to densely packed FePt 3/Fe2O3 heterodimers. The replacements of Fe(acac)3 by Fe(tmhd)3 led to the long-range order of nanoparticle assembly with the narrowest size distribution.

KW - EXAFS

KW - Iron platinum

KW - Magnetic nanoparticles

KW - XANES

UR - https://www.scopus.com/pages/publications/84901475612

U2 - 10.1007/s11051-014-2436-9

DO - 10.1007/s11051-014-2436-9

M3 - Article

AN - SCOPUS:84901475612

SN - 1388-0764

VL - 16

JO - Journal of Nanoparticle Research

JF - Journal of Nanoparticle Research

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M1 - 2436

ER -

Substituent effect of Fe(β-diketonate)₃on the control of self-assembly FePt-based nanoparticles

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Keywords

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