세자리 Schiff Base Co(Ⅱ) 착물의 합성과 전기화학적 성질

채희남,최용국,Chae, Hui Nam,Choe, Yong Guk 대한화학회 1998 대한화학회지 Vol.42 No.4

Salicyladehyde와 2-hydroxy-1-naphthaldehyde를 2-aminophenol과 2-amino-p-cresol에 반응시켜 세자리 Schiff base 리간드$(SIPH_2,\;SIPCH_2,\;HNIPH_2,\; HNIPCH_2)$들을 합성하였으며 이들 리간드를 Co(II) 이온과 반응시켜 세자리 Schiff base Co(II) 착물들을 합성하였다. 리간드와 착물들의 구조와 특성을 원소분석, $^1H$-NMR, IR, UV-vis 분광법과 열 무게 분석법으로 예측하였다. Co(II) 착물들은 Schiff base 리간드와 금속(II)의 몰비가 1:1로 결합하였으며, 3분자의 수화물이 배위된 6배위 착물 구조임을 알았다.지지 전해질로서 0.1M TBAP를 포함한 DMSO 용액에서 순환 전압전류법으로 세자리 Schiff base 리간드와 이들의 Co(II) 착물들의 전기 화학적인 산화·환원 과정을 알아보았다. 리간드들의 전기 화학적 환원은 확산 지배적이고 비가역적으로 진행되었으며 Co(II) 착물의 전기 화학적 환원과정은 2단계의 1전자 반응으로 확산 지배적이고 비가역적으로 진행되었다. Co(II) 착물들의 환원전위는 [Co(II)$(HNIPC)(H_2O)_3$]>[Co(II)$(HNIP)(H_2O)_3$]>[Co(II)$(SIPC)(H_2O)_3$]>[Co(II)$(SIP)(H_2O)_3] 순으로 약간 양전위 방향으로 이동하였으나 리간드의 영향은 크게 받지 않았다. Tridentate Schiff base ligands such as $SIPH_2,\;SIPCH_2,\;HNIPH_2,\;and\; HNIPCH_2$ were prepared by the reaction of salicylaldehyde and 2-hydroxy-l-naphthaldehyde with 2-aminophenol and 2-amino-p-cresol. The structures and properties of ligands and their Co(II) complexes were investigated by elemental analysis, $^1H$NMR, IR, UV-visible spectra, and thermogravimetric analysis. The molar ratio of Schiff base to the metal of complexes was found to be 1:1. Co(II) complexes were contemplated to be hexa-coordinated octahedral configuration containing three water molecules. The redox process of ligands and complexes in DMSO solution containing 0.1 M TBAP as a supporting electrolyte were investigated by cyclic voltammetry with glassy carbon electrode. The redox process of the tridentate Schiff base ligands was totally irreversible. The redox process of Co(II) complexes were irreversible and one electron processes by two steps in diffusion controlled reaction. The reduction potential of the Co(II) complexes was shifted to the positive direction in the order [Co(Ⅱ)$(HNIPC)(H_2O)_3$]>[Co(Ⅱ)$(HNIP)(H_2O)_3$]>[Co(II)$(SIPC)(H_2O)_3$]>[Co(Ⅱ)$(SIP)(H_2O)_3], and their dependence on ligands were not so high.

[이 가정이 사는 모습] ‘거지대장’이 꽃피운 희망의 꽃

채희남 새가정사 1997 새가정 Vol.- No.-

Cu(II) 전이금속 착물의 합성과 전기화학적 성질에 관한 연구

채희남,최용국,Chae, Hee-nam,Choi, Yong-kook 한국공업화학회 1998 공업화학 Vol.9 No.5

Salicylaldehyde와 2-hydroxy-1-naphthaldehyde를 2-aminophenol과 2-amino-p-cresol에 반응시켜 세자리 Schiff base 리간드들을 합성하였다. 이들 리간드를 Cu(II)이온과 반응시켜 세자리 Schiff base Cu(II) 착물들을 합성하였다. 리간드와 그 착물들의 구조와 특성을 원소분석, $^1H$-NMR, IR, UV-vis 분광법과 열 무게 분석법으로 알아보았다. Schiff base 리간드와 Cu(II)의 몰비는 1:1로 결합하며 Cu(II)착물들은 1 분자의 수화물이 배위된 4배위의 평면 사각형 구조임을 알았다. 지지전해질로서 0.1M TBAP를 포함한 DMSO 용액에서 순환 전압전류법과 미분 펄스 전압전류법으로 세자리 Schiff base 리간드와 이들의 Cu(II) 착물들의 전기 화학적인 산화 환원 과정을 알아보았다. 세자리 Schiff base 리간드들의 전기 화학적 환원은 확산 지배적이고 비가역적으로 진행되었다. Cu(II) 착물들의 전기화학적 환원과정은 1단계 1전자 반응으로 모두 확산 지배적이고 준가역적으로 진행되었다. Cu(II)착물들의 환원전위는 [Cu(II)(HNIPC)($H_2O$)]>[Cu(II)(HNIP)($H_2O$)]>[Cu(II)(SIP)($H_2O$)]>[Cu(II)(SIPC)($H_2O$)] 순으로 양전위 방향으로 이동하였다. Tridentate Schiff base ligands were prepared by the reactions of salicylaldehyde and 2-hydroxy-1-naphthaldehyde with 2-aminophenol and 2-amino-p-cresol. And then Cu(II) complexes of those ligands were synthesized. The structures and properties of ligands and their complexes were studied by elemental analysis, $^1H$-NMR, IR, UV-visible spectra, and thermogravimetric analysis. The mole ratio of Schiff base to the metal of complexes was found to be 1:1. Cu(II) complexes were contemplated to be four-coordinated square planar configuration containing one water molecule. The redox process of ligands and complexes in DMSO solution containing 0.1 M TBAP as a supporting electrolyte was investigated by cyclic voltammetry and differential pulse voltammetry with glassy carbon electrode. The redox process of the tridentate Schiff base ligands was totally irreversible. The redox process of Cu(II) complexes was quasi-reversible and diffusion-controlled as one electron by one step process Cu(II)/Cu(I). The reduction potentials of the Cu(II) complexes shifted in the positive direction in the order of [Cu(II)(HNIPC)($H_2O$)]>[Cu(II)(HNIP)($H_2O$)]>[Cu(II)(SIP)($H_2O$)]>[Cu(II)(SIPC)($H_2O$)].

세자리 Schiff Base의 Ni(II) 착물의 분석

채희남,최용국,Chae, Hee-Nam,Choi, Yong-Kook 한국분석과학회 1998 분석과학 Vol.11 No.5

Tridentate Schiff base ligands, $SIPH_2$, $SIPCH_2$, $HNIPH_2$, and $HNIPCH_2$ were prepared by the reactions of salicylaldehyde and 2-hydroxy-1-naphthaldehyde with 2-aminophenol and 2-amino-p-cresol. Ni(II) complexes of those ligands were synthesized. The structures and properties of ligands and their complexes were studied by elemental analysis, $^1H$-NMR, IR, UV-visible spectra, and thermogravimetric analysis. The mole ratio of Schiff base to the metal of complexes was found to be 1:1. Ni(II) complexes were contemplated to be hexa-coordinated octahedral configuration containing three water molecules. The redox process of ligands and complexes in DMSO solution containing 0.1 M TBAP as supporting electrolyte was investigated by cyclic voltammetry and differential pulse voltammetry with glassy carbon electrode. The redox process of the tridentate Schiff base ligands was totally irreversible. The redox process of Ni(II) complexes were quasi-reversible and diffusion-controlled as one electron by one step process Ni(II)/Ni(I). The reduction potentials of the Ni(II) complexes shifted in the positive direction in the order [$Ni(II)(HNIP)(H_2O)_3$]>[$Ni(II)(SIP)(H_2O)_3$]>[$Ni(II)(SIPC)(H_2O)_3$]>[$Ni(II)(HNIPC)(H_2O)_3$] and their dependence on ligands were not so high. Consequently the [$Ni(II)(HNIPC)(H_2O)_3$] complex among the synthesized Ni(II) complexes was found to be most stable in the DMSO solution. Salicylaldehyde와 2-hydroxy-1-naphthaldehyde를 2-aminophenol과 2-amino-p-cresol에 반응시켜 세자리 Schiff base 리간드($SIPH_2$, $SIPCH_2$, $HNIPH_2$, $HNIPCH_2$)들을 합성하였다. 이들 리간드를 Ni(II) 이온과 반응시켜 세자리 Schiff base Ni(II) 착물들을 합성 하였다. 이들 리간드와 그 착물들의 가상적인 구조와 특성을 원소분석, $^1H$-NMR, IR, UV-vis 분광법과 열 무게 분석법으로 알아보았다. Schiff base 리간드와 Ni(II) 착물의 몰비는 1:1로 결합하며, Ni(II)착물들은 3분자의 수화물이 배위된 6배위의 8면체 구조임을 알았다. 지지 전해질로서 0.1 M TBAP를 포함한 DMSO 용액에서 순환 전압전류법과 미분 펄스 전압전류법으로 세자리 Schiff base 리간드와 이들의 Ni(II) 착물들의 전기 화학적인 산화 환원 과정을 알아보았다. 세자리 Schiff base 리간드들의 전기 화학적 환원은 확산 지배적이고 비가역적으로 진행되었다. Ni(II) 착물의 전기화학적 환원과정은 1단계 1전자 반응으로 확산 지배적이고 준가역적으로 진행되었다. Ni(II) 착물들의 환원전위는 [$Ni(II)(HNIP)(H_2O)_3$]>[$Ni(II)(SIP)(H_2O)_3$]>[$Ni(II)(SIPC)(H_2O)_3$]>[$Ni(II)(HNIPC)(H_2O)_3$]순으로 양전위 방향으로 이동하였으며, 리간드의 영향은 크게 받지 않았다. 이들 결과로 부터 본 연구에서 합성한 Ni(II)착물은 [$Ni(II)(HNIPC)(H_2O)_3$] 착물이 DMSO용매에서 가장 안정함을 알 수 있다.

Simple a-IGZO TFT Fabrication using Advanced Imprint Lithography

채희남,김성진,김형태,조성민 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0

The imprint lithography is being researched around the world because it has the advantage of decreased process step. This study aims to fabricate a-IGZO TFT of bottom gate-type using the advanced imprint lithography. Study represents TFT fabrication process using imprint lithography. Before the imprinting, layers were deposited Al, SiNx, a-IGZO and Cr on the substrate. The surface was spin-coated with resin to make 3-D imprinted structure. Imprinting on the coated resin was performed using a pattern transferred mold from a master template with TFT of width/length=100/50μm. Multi-layers were dry etched using the process gas. An a-IGZO TFT fabricated by the above process has threshold voltage(Vth) of 1.3V, linear field effect mobility(μFE) of 3.8㎠/Vs, on/off ratio of >106, and subthreshold swing of 0.77V/ decade. This TFT fabrication process using advanced imprint lithography is expected to be applicable to roll-to-roll backplane process for rollable OLED display in the future.

Cu (2) 전이금속 착물의 합성과 전기화학적 성질에 관한 연구

채희남,최용국 ( Hee Nam Chae,Yong Kook Choi ) 한국공업화학회 1998 공업화학 Vol.9 No.5

비수용매에서 전이금속 Ni(II) 착물의 전기화학적 연구

최용국,채희남 全南大學校 觸媒硏究所 1997 觸媒硏究 論文集 Vol.19 No.-

Tridentate schiff base ligand salicylidene-2-iminophenol(SIPH₂) was prepared by the reaction of salicylaldehyde with 2-aminophenol, a its Ni(II) complex was synthesized. The structure and properties of the ligand and its complex were studied by elemental analysis, ¹H-NMR, IR, UV-visible spectroscopy, and thermogravimetric analysis. The mole ratio of Schiff base to the metal of complex was found to be 1:1. Ni(II) complex was contemplated to have hexa-coordinated octahedral configuration containing three water molecules. The redox process of ligand and complex in DMSO solution containing 0.1 M TBAP as supporting electrolyte was investigated by cyclic voltammetry and differential pulse voltammetry with glassy carbon electrode. The redox process of the tridentate Schiff base ligand was totally irreversible. The redox process of Ni(II) complex was quasi-reversible and diffusion-controlled as one electron by one step process Ni(II)/Ni(I). Therefore we conclued that the redox process of complex are as follows : ??

Transition Metal Cu(II) 착물의 합성

최용국,채희남 全南大學校 觸媒硏究所 1997 觸媒硏究 論文集 Vol.19 No.-

Tridentate Schiff base ligands, 2-hydroxy-1-naphthlidene-2-iminophenol(HNIPH₂) and 2-hydroxy-1-naphthidene-2imino-p-cresol(HNIPH₂) were prepared by the reactions of 2-hydroxy-1-naphthaldehyde with 2-aminophenol and 2-amino-p-cersol, respectively. And Cu(II) complexes of those ligands were synthesized. The structures and properties of ligands and their complexes of those ligands were synthesized. The structures and properties of ligands and their complexes were studied by elemental analysis, ¹H-NMR, IR, UV-visible spectroscopy, and themogravimetric analysis. The mole ratio of Schiff base to the Cu(II) of complexes was found to be 1:1. Cu(II) complexes were contemplated to have four-coordinated square planar config-uration containing one water molecule.

[N,N'-1,2-Phenylenebis(salicylideneiminato)] Manganese(II) 착물의 전기화학적 성질

蔡熙南,朴炳瑞 順天大學校 1994 論文集 Vol.13 No.1

□Mn(Ⅱ)(SOPD)(2H₂O) [SOPD: N,N'-1,2-phenylenebis (salicylideneimi nate)]as tetradentate Schiff base Manganese(Ⅱ)complex was synthesized. The composition of this complex identified by IR,A.A.,and UV-visible spectroscopy, thermogravimetric analysis(T.G.A.), and elemental analysis(C.H.N). It seems to be that the mole ratio of anionic ligand SOPD to the Mn(Ⅱ)is 1:1 and Mn(Ⅱ)(SOPD)(2H₂O)complex is hexa- coordinated configuration containing two water molecules. The electrochemical reduction process of the Mn(Ⅱ)(SOPD)(2H₂O) complex was investigated by cyclic voltammetry (CV) at glassy carbon electrode and differential pulse polarography (DPP)at HMDE in nonaqueous solvent containing 0.1M tetraethylammonium perchlorate (TEAP)as a supporting electrolyte. It was found that diffusion controlled reduction process of Mn(Ⅱ) (SOPD)(2H₂O) complex was one step with one electron.

[화학] 세자리 Schiff Base의 Ni(Ⅱ) 착물의 분석

채희남(Hee-Nam Chae),최용국(Yong-Kook Choi) 한국분석과학회 1998 분석과학 Vol.11 No.5