• 대한화학회지
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• 제34권4호
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• pp.345-351
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• 1990

역상 고성능 액체 크로마토그래피에 Cu (Ⅱ)-L-Proline 킬레이트를 이동상에 첨가하여 답실아미노산(DABS-AA)을 광학분리했다. DABS-아미노산에 관한 머무름거동을 이동상으로 아세토니트릴, 착물 및 완충용액의 농도와 pH에 따라 연구 검토했다. DABS-아미노산의 광학분리선택성은 이동상의 pH와 킬레이트의 농도가 증가하면 증가하나 유기용매의 농도에 따라 감소한다. 완충액의 농도에는 무관하다. DABS-아미노산과 구리 착물간의 리간드 교환반응의 입체효과에 따른 시스-트란스 생성으로 분리메카니즘을 설명할 수 있다.

• 한국환경보건학회지
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• 제1권1호
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• pp.21-27
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• 1974

This work was carried out to investigate the chemical properties of the chelate compounds which were produced with 2-methoxy-5-nitrophenol(MNG) and metal salt such as copper nitrate and manganese nitrate. And obtained results were as in the followings. 1) The binding ratio of the chelate compounds formation were determined by using the molar ratio concentration method and their chemical structures were identified by IR-spectrum. 2) In the absorbance measuring, 2-methoxy-5-nitrophenol coordinated with manganese and copper showed the maximum absorbance at $430 m\mu$ and $410 m\mu$ respectively. 3) The binding ratio of chelated compounds were measured by molar ratio method and continuous variation method with spectrophotometer, which was identified as 1:2. 4) The conditional formation constant(log Kn value) of manganese and copper chelate compounds were 6.70, 6.75, respectively according to the equation of $log\frac{A-AM\circ n MNG}{AMm MNG-A}=n log (M\circ)+log Kn$ 5) The dissociations degree of manganese and copper chelate compound were $2, 300{\times} 10^{-7}$, $2, 346{\times} 10^{-7}$ respectively according to the molar calculation method.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1018-1023
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• 2006

The metal chelate complex of aluminum 8-hydroxyquinolines $(Alq_3)$ is an important electro-luminescent (EL) material used in fabricating organic light emitting (OLEDs). In this work, diodes / displays using in house synthesized $Alq_3$ and simple structure have been fabricated. It is demonstrated that luminance of $12460\;cd/m^2$ and efficiency of 3.1 cd/A are achievable in these fluorescent devices. Possible degradation effects are analyzed.

• 약학회지
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• 제13권2_3호
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• pp.80-83
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• 1969

Acetylsalicylic acid gives a water-insoluble violet complex with $<\alpha>$-Picolin-Cu(II) reagent. The Complex is extractable well with a mixture of $<\alpha>$-Picolin-tetrachloromethane solution. The Complex salt dissolved in the mixed solution shows a maximum absorption at 620 m$<\mu>$. It has a melting point at $171^{\circ}C-$173^{\circ}C and molar ratio of Acetylsalicylic acid: Cu(II): $<\alpha>$-Picolin was estimated as 2:1:2 by continuous variation method and chelate titration method.

• Bulletin of the Korean Chemical Society
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• 제25권4호
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• pp.545-548
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• 2004

A sensitive, selective and rapid method for the determination of nickel based on the rapid reaction of nickel(II) with QADMAA and the solid phase extraction of the Ni(II)-QADMAA chelate with $C_{18}$ membrane disks has been developed. In the presence of pH 6.0 buffer solution and sodium dodecyl sulfonate (SDS) medium, QADMAA reacts with nickel to form a violet complex of a molar ratio of 1 : 2 (nickel to QADMAA). This chelate was enriched by solid phase extraction with $C_{18}$ membrane disks. An enrichment factor of 50 was obtained by elution of the chelates form the disks with the minimal amount of isopentyl alcohol. The molar absorptivity of the chelate was $1.32{\times}10^5L\;mol^{-1}cm^{- 1}$ at 590 nm in the measured solution. Beer's law was obeyed in the range of 0.01-0.6 ${\mu}$g/mL. This method was applied to the determination of nickel in water and biological samples with good results.

• 청정기술
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• 제20권4호
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• pp.367-374
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• 2014

0.1~1 M의 철킬레이트 화합물을 이용한 화학흡수반응에 의한 바이오가스내 황화수소제거를 위한 실험이 수행되었다. 철킬레이트 화합물을 이용한 황화수소제거는 철킬레이트의 최적산화반응을 통해 이루어진다. 바이오가스에 존재하는 황화수소는 킬레이트농도 및 pH 등의 공정조건에 따라 효과적으로 제거될 뿐만 아니라 철킬레이트 산화반응에 의해 황화수소내 존재하는 황성분을 생성시킨다. Fe-EDTA의 농도가 증가하면 철킬레이트 화합물의 착물이 안정되어 황생성의 전환이 증가하였다. 또한 철킬레이트화합물의 안정도는 pH에 따라 변하는 중요한 인자이고 pH 9에서 최적반응을 나타냈다.

• Bulletin of the Korean Chemical Society
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• 제29권1호
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• pp.217-220
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• 2008

• 약학회지
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• 제13권2_3호
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• pp.97-100
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• 1969

As a part of an effort to find a relationship between metal chelation and its chemotherapeutic activity change for sulfa drugs, Sulfadimethoxine, Sulfamerazine Sulfamethoxy-pyridazine-Cu(II) complex compounds were studied through IR spectra.

• Bulletin of the Korean Chemical Society
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• 제16권5호
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• pp.406-409
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• 1995

The complex formation from Cu(Ⅱ) ion and 2,2-bis(hydroxymethyl)-2,2',2"-nitrilotriethanol (Bistris) in aqueous solution has been studied potentiometrically and spectrophotometrically. Bistris (L) coordinates to Cu(Ⅱ) as tridentate. The complex CuL2+ undergoes deprotonation in neutral and basic media. The deprotonated complexes involve metal-alcoholate coordinate bond in stable chelate structures.

• 대한화학회지
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• 제34권1호
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• pp.76-84
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• 1990

키랄이동상 첨가법으로 단실아미노산의 광학이성질체들을 분리했다. 두 가지의 xylenyl-L-proline 이성질체를 합성하고 이것을 구리(Ⅱ)킬레이트로 만들어 이동상에 첨가하여 단실아미노산의 광학 이성질체를 분리했다. 이 아미노산에 대한 용리거동은 benzyl-L-proline의 구리착물을 사용했을 때와 유사했다. 이동상에서 유기용매의 조성, 완충용액의 농도 및 pH에 대한 효과도 조사 검토했다. 분리메카니즘은 리간드 교환반응의 시스-트란스 효과의 삼성분착물과 정지상간의 소수성 상호작용으로 설명할 수 있었다.