New Heteroleptic Cobalt Precursors for Deposition of Cobalt-Based Thin Films

Seong Ho Han; Sheby Mary George; Ga Yeon Lee; Jeong Hwan Han; Bo Keun Park; Chang Gyoun Kim; Seung Uk Son; Myoung Soo Lah; Taek Mo Chung

doi:10.1021/acsomega.7b00800

New Heteroleptic Cobalt Precursors for Deposition of Cobalt-Based Thin Films

Seong Ho Han, Sheby Mary George, Ga Yeon Lee, Jeong Hwan Han, Bo Keun Park, Chang Gyoun Kim, Seung Uk Son, Myoung Soo Lah, Taek Mo Chung

Dept. of Materials Science & Engineering

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

11 Scopus citations

Abstract

A new series of heteroleptic complexes of cobalt were synthesized using aminoalkoxide and β-diketonate ligands. The complexes, [Co(dmamp)(acac)]₂ (3), [Co(dmamp)(tfac)]₂ (4), [Co(dmamp)(hfac)]₂ (5), [Co(dmamp)(tmhd)]₂ (6), and [Co(dmamb)(tmhd)]₂ (7), were prepared by two-step substitution reactions and studied using Fourier transform infrared spectroscopy, mass spectrometry, elemental analysis, and thermogravimetric analysis (TGA). Complexes 3-7 displayed dimeric molecular structures for all of the complexes with cobalt metal centers interconnected by μ₂-O bonding by the alkoxy oxygen atom. TGA and a thermal study of the complexes displayed high volatilities and stabilities for complexes 6 and 7, with sublimation temperatures of 120 °C/0.5 Torr and 130 °C/0.5 Torr, respectively.

Original language	English
Pages (from-to)	5486-5493
Number of pages	8
Journal	ACS Omega
Volume	2
Issue number	9
DOIs	https://doi.org/10.1021/acsomega.7b00800
State	Published - 30 Sep 2017

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title = "New Heteroleptic Cobalt Precursors for Deposition of Cobalt-Based Thin Films",

abstract = "A new series of heteroleptic complexes of cobalt were synthesized using aminoalkoxide and β-diketonate ligands. The complexes, [Co(dmamp)(acac)]2 (3), [Co(dmamp)(tfac)]2 (4), [Co(dmamp)(hfac)]2 (5), [Co(dmamp)(tmhd)]2 (6), and [Co(dmamb)(tmhd)]2 (7), were prepared by two-step substitution reactions and studied using Fourier transform infrared spectroscopy, mass spectrometry, elemental analysis, and thermogravimetric analysis (TGA). Complexes 3-7 displayed dimeric molecular structures for all of the complexes with cobalt metal centers interconnected by μ2-O bonding by the alkoxy oxygen atom. TGA and a thermal study of the complexes displayed high volatilities and stabilities for complexes 6 and 7, with sublimation temperatures of 120 °C/0.5 Torr and 130 °C/0.5 Torr, respectively.",

author = "Han, \{Seong Ho\} and George, \{Sheby Mary\} and Lee, \{Ga Yeon\} and Han, \{Jeong Hwan\} and Park, \{Bo Keun\} and Kim, \{Chang Gyoun\} and Son, \{Seung Uk\} and Lah, \{Myoung Soo\} and Chung, \{Taek Mo\}",

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doi = "10.1021/acsomega.7b00800",

language = "English",

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T1 - New Heteroleptic Cobalt Precursors for Deposition of Cobalt-Based Thin Films

AU - Han, Seong Ho

AU - George, Sheby Mary

AU - Lee, Ga Yeon

AU - Han, Jeong Hwan

AU - Park, Bo Keun

AU - Kim, Chang Gyoun

AU - Son, Seung Uk

AU - Lah, Myoung Soo

AU - Chung, Taek Mo

PY - 2017/9/30

Y1 - 2017/9/30

N2 - A new series of heteroleptic complexes of cobalt were synthesized using aminoalkoxide and β-diketonate ligands. The complexes, [Co(dmamp)(acac)]2 (3), [Co(dmamp)(tfac)]2 (4), [Co(dmamp)(hfac)]2 (5), [Co(dmamp)(tmhd)]2 (6), and [Co(dmamb)(tmhd)]2 (7), were prepared by two-step substitution reactions and studied using Fourier transform infrared spectroscopy, mass spectrometry, elemental analysis, and thermogravimetric analysis (TGA). Complexes 3-7 displayed dimeric molecular structures for all of the complexes with cobalt metal centers interconnected by μ2-O bonding by the alkoxy oxygen atom. TGA and a thermal study of the complexes displayed high volatilities and stabilities for complexes 6 and 7, with sublimation temperatures of 120 °C/0.5 Torr and 130 °C/0.5 Torr, respectively.

AB - A new series of heteroleptic complexes of cobalt were synthesized using aminoalkoxide and β-diketonate ligands. The complexes, [Co(dmamp)(acac)]2 (3), [Co(dmamp)(tfac)]2 (4), [Co(dmamp)(hfac)]2 (5), [Co(dmamp)(tmhd)]2 (6), and [Co(dmamb)(tmhd)]2 (7), were prepared by two-step substitution reactions and studied using Fourier transform infrared spectroscopy, mass spectrometry, elemental analysis, and thermogravimetric analysis (TGA). Complexes 3-7 displayed dimeric molecular structures for all of the complexes with cobalt metal centers interconnected by μ2-O bonding by the alkoxy oxygen atom. TGA and a thermal study of the complexes displayed high volatilities and stabilities for complexes 6 and 7, with sublimation temperatures of 120 °C/0.5 Torr and 130 °C/0.5 Torr, respectively.

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U2 - 10.1021/acsomega.7b00800

DO - 10.1021/acsomega.7b00800

M3 - Article

AN - SCOPUS:85046691317

SN - 2470-1343

VL - 2

SP - 5486

EP - 5493

JO - ACS Omega

JF - ACS Omega

IS - 9

ER -

New Heteroleptic Cobalt Precursors for Deposition of Cobalt-Based Thin Films

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