• 대한화학회지
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• 제35권2호
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• pp.142-150
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• 1991

N,N'-oxalylbis(salicylaldehyde hydrazone), N,N'-malonylbis(salicylaldehyde hydrazone), 그리고 N,N'-succinylbis(salicylaldehyde hydrazone)과 Cd(II) 이온과의 착물형성에 따르는 안정도상수를 DMSO 용액에서 폴라로그래피법으로 측정하였다. 안정도상수의 크기는 OBSH < MBSH < SBSH의 순서로 증가하였으며, Cd(II) 이언은 이들 리간드와 매우 안정한 착물을 형성하였다. 안정도 상수를 여러 온도에서 측정하여 엔탈피 및 엔트로피 변화를 측정한 결과, 착물형성에 기여를 하고 있음을 알았다.

• 분석과학
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• 제11권2호
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• pp.145-149
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• 1998

Stability constants for the complexes of multidentate N,O-Schiff base ligands (bis-(salicylaldehyde)ethylendiamine(SED), bis-(salicylaldehyde)propylendiamine(SPD), bis-(salicylaldehyde)diethylenetriamine(SDT), bis-(salicylaldehyde)triethylenetetraamine(STT), and bis-(salicylaldehyde)tetraethylenepentaamine(STP) with Co(II) and Zn(II) were determined by a potentiometric method in a 70% dioxane-30% water mixture and ethanol, respectively. Stability constants for the complexes increased in the order of SPD

• 대한화학회지
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• 제35권2호
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• pp.135-141
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• 1991

N,N'-oxalylbis(salicylaldehyde hydrazone) (OBSH)과 Zn (II), Cd (II) 및 Pb(II) 이온들과의 착물 형성에 따르는 안정도상수를 DMSO 용액에서 폴라로그래피법으로 측정하였다. 안정도상수의 크기는 Cd(II) < Zn(II) < pb(II) 이온의 순서로 증가하였으며, 모든 중금속이온들의 OBSH 리간드와 매우 안정한 착물을 형성하였다. 안정도상수를 여러 온도에서 측정하여 엔탈피 및 엔트로피 변화를 구한 결과, 착물의 안정도에 많은 기여를 하고 있음을 알았다.

• 한국균학회지
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• 제8권2호
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• pp.85-88
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• 1980

The antifungal activity of salicylaldehyde-o-phenylenediimine, a derivative of Schiff base, was studied in vitro against various species of fungi, especially, dermatophytes. The antifungal tests were performed according to the tube-dilution method, and all subcultures were incubated at room temperature for 14 days. Salicylaldehyde-o-phenylenediimine was effective against fungi such as Trichophyton mentagrophytes, Trichophyton rubrum, Microsporum canis and Fonsecaea compacta. Trichophyton mentagrophytes was inhibited at $20{\mu}g$ per ml, Trichophyton rubrum at $40{\mu}g$ per ml, Microsporum canis at $6{\mu}g$ per ml, and Fonsecaea compacta at $2{\mu}g$ per ml.

• Bulletin of the Korean Chemical Society
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• 제17권3호
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• pp.223-227
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• 1996

Catalytic effects of transition metal (Co2+, Ni2+) complexes of N,N-bis(salicylaldehyde)-o-phenylenediimine (SOPD), N,N-bis(salicylaldehyde)-m-phenylenediimine (SMPD), and N,N-bis(salicylaldehyde)-p-phenylenediimine (SPPD), on the reduction of thionyl chloride at glassy carbon electrode, are evaluated by determining the kinetic parameters with cyclic voltammetric technique. The charge transfer process for the reduction of thionyl chloride is strongly affected by the concentration of the catalysts. Some quadridentate Schiff base-M(Ⅱ) complexes show sizable catalytic activities for the reduction of thionyl chloride. Catalytic effects of [M(Ⅱ)(SOPD)] complexes are slightly larger compared to [M(Ⅱ)2(SMPD)2] and [M(Ⅱ)2(SPPD)2] complexes. On those electrodes deposited with the catalysts, the observed exchange rate constants (ko) are in the range of 0.89-2.28 × 10-7 cm/s, while it is 1.24 × 10-7 cm/s on the bare glassy carbon electrode.

• 대한화학회지
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• 제21권1호
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• pp.3-15
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• 1977

Salicylaldehyde-4-morpholinothiosemicarbazone, $C_{12}H_{15}O_2N_3S$, 결정은 직각비등축정계에 속하며 공간군은 $Pna2_1$이다. 단위세포에는 4개의 분자가 포함되면 세포 길이는 a = 11.85(5), b = 15.45(5), c = 7.18(3)${\AA}$이다. 농도는 multiple-film equi-inclination Weissenberg 사진으로부터 3차원적 농도 데이타를 얻어 목측법에 의하여 측정하였다. 결정구조는 Patterson 및 Fourier법으로 해명하였으며 구조의 정밀화는 block-diagonal 최소자승법으로 하였으며 R값은 1064개의 반사에 대하여 0.11이었다. 몰포린 고리는 의자형이며 1분자내의 몰포린 고리와 황원자를 제외한 원자들은 대략 한 평면을 이룬다. 수산화기의 산소원자는 질소원자와 2.67${\AA}$의 거리로 $O-H{\cdot}{\cdot}{\cdot}N$형 수소결합을 하고 있고 분자간에는 van der Waals 접촉으로 연결되어 있다.

• 대한화학회지
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• 제36권1호
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• pp.95-99
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• 1992

N,N'-Oxalylbis(salicylaldehyde hydrazone)을 발색시약으로 하여 분광광도법에 의한 구리의 정량법을 개발하였다. 정량은 60% dimethylformamide 수용액(pH2)에서의 구리착물의 흡광도를 422nm의 파장에서 측정함으로써 수행되었다. 구리의 농도가 0.4${\sim}$1.8 ${\mu}$g/ml인 범위에서 정량이 가능하였으며 이 방법을 합성시료 및 합금시료의 분석에 적용하였다.

• 한국환경농학회지
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• 제33권3호
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• pp.213-219
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• 2014

BACKGROUND: In an environment-friendly agriculture, plant extracts have been perceived as alternatives of synthetic pesticides. The Environment-friendly Agriculture Promotion Act of Korea has approved cinnamon extract as a matter for the production of commercial biopesticides. Thirteen commercial biopesticides containing cinnamon extract have been marketed locally. However, the analytical method for the quality control of these biopesticides containing cinnamon extract has not been studied. METHODS AND RESULTS: Cartridge clean-up method for the determination of cinnamaldehyde, cinnamylalcohol and salicylaldehyde in biopesticides containing cinnamon extract was developed and validated by gas chromatography (GC). The clean-up method was optimized with HLB SPE cartridges for the bioactive substance in biopesticides containing cinnamon extract, and the eluate was analyzed by GC. The developed method was validated, and the LOQ and recovery rates of cinnamaldehyde, cinnamylalcohol and salicylaldehyde were 0.139, 0.067 and $0.062mgL^{-1}$ and 84.2, 86.5 and 82.1%, respectively. The contents of cinnamaldehyde, cinnamylalcohol and salicylaldehyde were analyzed using the developed method in the 13 commercial biopesticides. Results showed 0.06-17.37%,

• BMB Reports
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• 제33권1호
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• pp.69-74
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• 2000

The Arabidopsis thaliana S-Adenosylmethionine decarboxylase (AdoMetDC) cDNA ($GenBank^{TM}$ U63633) was cloned, then the AdoMetDC protein was expressed and purified. The purified AdoMetDC was inactivated by salicylaldehyde in a pseudo first- order kinetics. The secondorder rate constant for inactivation was 126 $M^{-1}min^{-1}$ with the slope of n=0.73, suggesting that inactivation is the result of the reaction of one lysine residue in the active site of AdoMetDC. Site-specific mutagenesis was performed on the AdoMetDC to introduce mutations in conserved $lysine^{81}$ residues. These were chosen by examination of the conserved sequence and proved to be involved in enzymatic activity by chemical modification. Changing $Lys^{81}$ to alanine showed an altered optimal pH. The substrate also provided protection against inactivation by salicylaldehyde. Considering these results, we suggest that the $lysine^{81}$ residue may be involved in catalytic activity.

• 분석과학
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• 제10권4호
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• pp.246-255
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• 1997

산소-질소계를 포함하는 여러 자리 시프염기 리간드인 비스-살리실알데히드-에틸렌디아민(SED), 비스-살리실알데히드-프로필렌디아민(SPD), 비스-살리실알데히드-디에틸렌트리아민(SDT) 및 비스-살리실알데히드-트리에틸렌테트라아민(STT)들과 니켈(II) 착물을 합성하여 원소분석법, 적외선분광법, 자외-가시흡광분광법 및 질량분석법을 이용하여 확인하였다. 이들 리간드를 70% 디옥산-30% 물 혼합 용매 및 에탄올 용매에서 전위차법으로 니켈(II)-시프염기 착물들의 안정도상수값을 각각 구하였다. 안정도상수값의 크기는 Ni(II)-SPD