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( N-docosyl pyridinium ) - TCNQ ( 1 : 1 ) 착체의 합성과 Langmuir - Blodgett 초박막 제작
손병청,정순욱 ( Byoung Chung Sohn,Soon Wook Jeong ) 한국유화학회 1989 한국응용과학기술학회지 Vol.6 No.2
(N-docosyl pyridinium)-TCNQ(1:1) complex was synthesized by reacting N-docosyl pyridinium bromide and LiTCNQ. This complex was investigated and confirmed by elemental analysis. U.V.I.R spectra. A stability to the dispersion solvent, which is acetonitrile, dichloromethane, benzene, chloroform and acetonitrile-benzene (1:1, V/V) of (N-docosyl pyridinium)-TCNQ(1:1) complex was investigated by U.V spectrophotometer and was confirmed stabilized on acetonitrile, benzene and acetonitrile-benzene(1:1`V/V) for 7 hours. Using ultra pure water as subphase for L-B film deposition, the Y-type L-B film of (N-docosyl pyridinium)-TCNQ(1:1) complex was farbricated. The electrical conductivities on a perpendicular direction of the L-B film were measured to be 5×10exp(-5)∼5×10exp(-14) S/cm according to the number of layer.
Langmuir - Blodgett 법을 위한 ( 3-Alkyl benzimidazolium ) - TCNQ ( 1 : 1 ) 착물의 분산용매 중에서의 안정성
손병청,황교현,정순욱 ( Byoung Chung Sohn,Kyo Hyun Hwang,Soon Wook Jeong ) 한국유화학회 1994 한국응용과학기술학회지 Vol.11 No.1
A Stability to the Spreading solvents, Which is acetonitrile, dichloromethane, benzene, chloroform and acetonitrile-benzene(1:1, v/v) of (3-Alkyl benzimidazolium)-TCNQ(1:1) Complex was investigated by UV-visible Spectrometer and was confirmed stabilized on acetornitrile, acetonitrilbenzene(1:1, v/v) for five hours. Using Ultra pure water as subphase for Langmuir-Blodgett(LB) Films, it was achived successibely to fabricate the Y-type LB films of (3-Alkyl benzimidazolium)-TCNQ(1:1) Complex. For the identification of deposition of (3-Alkyl benzimidazolium) TCNQ(1:1) Complex, UV visible spectra was recorded on HP 8452A spectrometer.
손병청,황교현,정순욱 ( Byoung Chung Sohn,Kyo Hyun Hwang,Soon Wook Jeong ) 한국유화학회 1994 한국응용과학기술학회지 Vol.11 No.1
In this research, (3-alkyl benzimidazalium)-TCNQ complexes were synthesized to obtain the necessary components for Langmuir-Blodgett Technique. (3-Alkyl benzimidazolium)-TCNQ complexes were prepared by the reaction of LiTCNQ with 3-alkyl benzimidazolium bromides and the products were confirmed by elemental analysis. FT-IR, UV-Visible spectroscopies FT-IR spectra of (3-alkyl benzimidazolium)-TCNQ(1 : 2) complexes were characterized by a broad band with a maximum at about 2900cm^-1 appears and were ascribed to electronic rather than vibrational absorption.
Methylmethacrylate와 n-Butylalcohol의 에스테르 교환반응에 관한 연구
鄭舜旭,朴根浩,孫秉淸,金忠一 弘益大學校 1988 弘大論叢 Vol.20 No.2
The transesterification reaction between methylmethacrylate and n-butyl alcohol was kinetically investigated in the presence of constant quantity of inhibitor and various metal acetate catalyst at 120℃. The quantity of n-butylmethacrylate produced in the reaction flask was measured by gas-chromatography, and the reaction rate was investigated by measuring of the quantity of the product the reaction under various catalysts. The transesterification was carried out in the first order reaction kinetics with respect to the concentration of methylmethacrylate and n-buty1 alcohol, respectively. The linear relationship was show between rate constant and absolute temperatures, and the activation energy of 14.7Kcal for the reaction with zinc acetate catalyst was calculated. The maximum reaction rate was appeared at the range of 1.5 to 1.6 of electro-negativity of metal ions.
Dimethylphthalate와 Ethyleneglycol의 에스테르 交換 反應에 關한 硏究(2)
孫秉淸,鄭舜旭 弘益大學校 1985 弘大論叢 Vol.17 No.2
The transesterification reaction between dimethylphthalate and ethyleneglycol was kinetically investigated in the presence of various metal chloride catalysts at 180℃. The reaction was followed by the measurement of distilled methanol from the micro measuring cylinder. The transesterification reaction was first-order kinetics with respect to the concentration of dimethylphthalate, ethyleneglycol and catalyst. From the examination of relationship between rate constant and reciprocal absolute temperature, the activation energy has been calculated as 22.62 Kcal with cupric chloride catalyst, 32.26 Kcal with zinc chloride catalyst.+the highest reactivities were found for electronegativity values between 1.4∼1.7.
Dimethylphthalate와 Monoethanolamine의 에스테르 交換反應에 關한 硏究
孫秉淸,鄭舜旭 弘益大學校 1983 弘大論叢 Vol.15 No.2
The transesterification reaction between dimethyphthalate and monoethanolamine was kinetically investigated in the presence of various metal acetate catalyst at 110℃. The reaction was followed by the measurement of distilled methanol from the micro measuring cylinder The transeterification reaction was first-order kinetics with respect to the concentration of dimethylphthalate, monoethanolamine and catalyst. From the examination of relationship between rate constant and reciprocal absolute temperature, the activation energy has been caculated as 9.843 Kcal with cadmium acetate catalyst, 12.30 Kcal without catalyst. The highest reactives were found for electronegativity values between 1.4~1.7.
金榮燦,鄭舜旭,孫秉淸 弘益大學校 科學技術硏究所 1995 科學技術硏究論文集 Vol.6 No.-
In this paper, cyan coupler was prepared by the reaction of 2-amino-4.6-dichloro-5-me-thylphenol with 2,4-ditirtiarypentyl-phenoxy-butyroyl chloride in the presence of pyridine. The product was identified by using various analytical tools such as melting point. Elemental analyzer. IR spectrophotometer. UV-Vis spectrophotometer Mass Spectrometer. The reaction of cyan coupler with CD-3(color development agent) was shown cyan color.
Dimethylphthalate 와 1 , 4-butanediol 의 에스테르 교환반응에 관한 연구
손병청,정순욱 한국유화학회 1992 한국응용과학기술학회지 Vol.9 No.1
The transesterification of dimethylphthalate by 1, 4-butanediol was kinetically investigated in the presence of various metal acetate catalysts at 180℃. The quantity of dimethylphthalate reacted in the reaction flask was measured by gas chromatography. The transesterification was assumed to obey first-order kinetics with respect to dimethylphthalate and 1, 4-butanediol, and a rate equation was derived. The linear relationship was shown between apparent rate constant and reciprocal absolute temperature, the activation energy has been calculated as 7.4kcal with lead acetate. The maximum reaction rate was appeared at the range of 1.5~1.6 of electronegativity of metal ions.