• 한국환경과학회지
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• 제16권4호
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• pp.393-397
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• 2007

The sonolytic decomposition of NHCs(Nitrogen Heterocyclic Compounds), such as atrazine[6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine], simazine(6-chloro-N,N'-diethyl-1,3,5-triazine-2,4-diamine), trietazine(6-chloro-N,N,N'-triethyl-1,3, 5-triazine-2,4-diamine), in water was investigated at a ultrasound frequency of 200kHz with an acoustic intensity of 200W under argon and air atmospheres. The concentration of NHCs decreased with irradiation, indicating pseudo-first-order kinetics. The rates were in the range $1.06{\sim}2.07({\times}10^{-2}min^{-1})$ under air and $1.30{\sim}2.59({\times}10^{-2}min^{-1})$ under argon at a concentration of $200{\mu}M$ of NHCs. The rate of hydroxyl radicals(${\bullet}{OH}$) formation from water is $19.8{\mu}M\;min^{-1}$ under argon and $14.7{\mu}M\;min^{-1}$ under air in the same sonolysis conditions. The sonolysis of NHCs is effectively inhibited, but not completely, by the addition of t-BuOH(2-methyl-2-propanol), which is known to be an efficient ${\bullet}{OH}$ radical scavenger in aqueous sonolysis. This suggests that the main decomposition of NHCs proceeds via reaction with ${\bullet}{OH}$ radical; a thermal reaction also occurs, although its contribution is small. The addition of appropriate amounts of Fenton's reagent $[Fe^{2+}]$ accelerates the decomposition. This is probably due to the regeneration of ${\bullet}{OH}$ radicals from hydrogen peroxide, which would be formed from recombination of ${\bullet}{OH}$ radicals and which may contribute a little to the decomposition.

• 대한화학회지
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• 제27권1호
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• pp.53-57
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• 1983

Triethylgermyldiphenylphosphine과 phenylisocyanate를 1:10 mole 비로 ampoule 속에서 혼합하여 여러 온도에서 반응시켰다. 그 결과 $0^{\circ}C$에서는 phenylisocyanate의 고리화 2합체인 N, N-diphenyluretidine-2,4-dione만이, $20^{\circ}C$에서는 phenylisocyanate의 고리화 3합체인 triphenylisocyanurate가 함께 생성되었으며, $50^{\circ}C$에서는 위의 생성물 이외에 diphenylcarbodiimide가 생성되었다. 또한 $100^{\circ}C$이상에서는 2합체는 생성되지 않고, diphenylcarbodiimide와 1,3,5-triphenyl-2,4,6-tris(phenylimino) hexahydro-1,3,5-triazine이 주로 생성되었다. 그리고 Triethylgermyldiphenylphosphine은 상기 고리 화합물들의 생성에 촉매로 작용하였다.

• 정보학연구
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• 제9권1호
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• pp.1-7
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• 2006

In this paper, we describe a study on the relationship between photographic emulsion manufacture and hardening test of films. The hardeners were prepared by condensation of equimolar amounts of trichlorotriazine with benzene- or naphthalene-based amino or oxy acids at 0 to 5$^{\circ}C$ and at pH 7, and used as hardening agents for gelatin. The hardening test of photographic emulsion was studied at pH 5.5. For example I(R=ONa) had strong hardening properties, I substituted with an aminobenzosulfonate moiety (R=$NHC_6H_4-p-SO_3Me$ where Me = K, Na) was a much weaker gelatin hardener, and when substituted with amino- or oxynaphthalene derivative (II, III) did not harden gelatin at all. Compound with 2 dichlorotriazine groups as IV exhibited strong hardening properties. The hardener can be used in photographic emulsion of film and showed very good hardening effect.

• 한국잡초학회지
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• 제13권2호
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• pp.89-95
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• 1993

광합성 전자전달저해제의 탐색을 위한 biorational screening 방법으로 광합성 박테리아의 일종인 cyanobacteria의 표준형(wild type)과 $D_1$ 단백질의 구성 아미노산이 변환된 변이주 Di-1, G-264. Di-22 등 4종을 사용하여 신규합성 화합물에 대한 광합성 전자전달저해활성을 조사하여 구조-활성간의 특성을 검토하였고, 이들의 thermoluminescence band를 이용하여 결합부위를 비교하였다. 1. Phenol 화합물(E-series)들은 cyanobacteria를 이용한 광합성 전자전달 저해활성의 양상을 볼 때 diuron보다는 dinoseb과 비슷하였다. 2. 합성한 Phenol화합물에서 나타난 구조활성간의 특정으로는 치환기의 phenyl ring에 C1이 치환되지 않은 경우 Hill반응 저해활성이 나타나지 않았고, 화합물에 있는 두개의 ring을 연결하는 bridge의 길이가 길어질수록 Hill반응 저해활성은 약하게 나타났다. 3. Triazine 화합물(T-series)의 경우 T-27, T-28화합물은 대조약제 atrazine보다 각각 10, 30배 강한 저해활성을 나타내었고, 변이주 G-264에 대 한 저항성 비율이 atrazine보다 더욱 크게 나타나 이들 화합물들의 결합부위가 $D_1$ 단백질의 264번 위치와 깊은 관계가 있을 것으로 생각되었다. 4. Triazine 화합물에 있어서 치환기 -C-NH-는 전자전달계에 중요한 작용기로 생각되었다. 5. Thermoluninescence band를 이용하여 결합부위를 비교할 수는 있었지만, 명료하게 구분되지 않았다.

• Bulletin of the Korean Chemical Society
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• 제29권3호
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• pp.697-700
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• 2008

• 농약과학회지
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• 제5권2호
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• pp.33-36
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• 2001

2-Chloromethyl-1,3-dioxolane기가 치환된 새로운 thiophene sulfonylurea계 유도체들을 합성하였고, 신규 합성된 화합물을 발아전 토양처리와 발아후 경엽처리를 통하여 문제잡초 9종의 제초활성을 규명하였으며, 답작 조건의 이앙벼 및 주요 잡초에 대한 제초활성도 시험하였다. 이 화합물들의 제초활성은 헤테로고리의 치환기에 따라 매우 다르게 나타났는데, 4, 6 위치에 각각 dimethoxy, 혹은 methyl, methoxy가 치환된 pyrimidine, 혹은 triazine이 붙어있는 sulfonylurea들이 활성이 좋았다. 그러나 이들은 2-fluoromethyl-1,3-dioxolane기가 치환된 thiophene sulfonylurea계 유도체보다 일반적으로 제초활성이 약하게 나타났다.

• 한국응용과학기술학회지
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• 제17권2호
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• pp.120-125
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• 2000

The tfTZ(4,4',4''-trifluoro-triazine) was used as a hole blocking material for the electroluminescent devices(ELDs) in this study. In general, the holes are outnumbered the electrons in hole transport and emitting layers because the hole transport is more efficient in most organic ELDs. The hole blocking layer are expected to control the excess holes to increase the recombination of holes and electrons and to decrease current density. The former study using the 2,4,6-triphenyl-1,3,5-triazine(TTA) as hole blocking layer showed that the TTA did not form stable films with vapor deposition technique. The tfTZ can generate stable evaporated films, moreover the fluorine group can lower the highest occupied molecular orbital(HOMO) level, which produces the energy barrier for the holes. The tfTZ has high electron affinities according to the data by the Cyclic-Voltammety(CV) method, which is developed for the measurement of HOMO and lowest occupied molecular orbital(LUMO) level of organic thin films. The lowered HOMO level is made the tfTZ to be applied for a hole blocking layer in ELDs. We fabricated multilayer ELDs with a structure of ITO/hole blocking layer(HBL)/hole transporting layer(HTL)/emitting layer/electrode. The hole blocking properties of this devices is confirmed from the lowered current density values compared with that without hole blocking layer.

• 한국응용과학기술학회지
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• 제15권3호
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• pp.33-37
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• 1998

The hardening test of gelatin with 2,4-dichloro-6-hydroxy-1,3,5-triazine mono sodium salt was studied at pH 5, 7, 8 and about increasing temperature, respectively. The hardener was prepared by the reaction of cyanuric chloride with sodium hydroxide, disodium hydrogenphosphate-12-water and trisodium phosphate-12-water in the presence of water. The product was identified by elemental analyzer. IR spectrophotometer. Novel hardener can be used in photographic emulsion and showed very good hardening effect.

• 분석과학
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• 제21권2호
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• pp.129-134
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• 2008

순환전압전류법과 벗김전압 전류법을 사용한 폭발물(hexahydro-1,3,5-trinitro-1,3,5-triazine, RDX)의 흔적량 분석을 위하여 double-stranded ds calf thymus (DNA)와 카본 나노튜브 혼합 전극을 사용하였으며. 최적 분석 조건을 시험한 결과 0.2 V vs. Ag/AgCl 전위에서 봉우리 전류를 발견하였다, 이 전위를 사용하여 선형분석 농도 범위: 50-75 ug/의 순환전압전류법과, 5-80 ng/L의 벗김 전압 전류법에 도달하였으며, 10 ug/L의 농도에서15번 반복 측정한 상대 표준편차는 0.086% 이었다. 또한 300초의 벗김 분석 조건에서 0.65 ng/L ($2.92{\times}10^{-12}M$) (S/N=3)의 검출 한계에 도달 하였으며, 이 조건에서 폭약에 오염된 토양중의 RDX 흔적량을 분석 응용하였다.

• Journal of Industrial and Engineering Chemistry
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• 제67권
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• pp.373-379
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• 2018

A transparent, freestanding Porous Aromatic Framework-97 (PAF-97) membrane was successfully synthesized via a one-step acid-catalyzed reaction. Due to the introduction of ether groups, the obtained PAF-97 membrane possesses enhanced structural flexibility, thus increasing the flexibility of the resulting membrane. This is proofed by the fact that the feeding pressure of the membrane reaches as high as 5.5 bar during the separation of gas mixtures. The Young's moduli of the membrane were 6.615 GPa and 11.11 GPa, either in a dry or hydrated state respectively. To be highlighted, under a feeding pressure of 3.6 bar, the PAF-97 membrane rendered the permeance values of $2.90{\times}10^{-7}$, $1.29{\times}10^{-8}mol\;m^{-2}s^{-1}Pa^{-1}$ for $CO_2$ and $CH_4$, respectively, with a $CO_2/CH_4$ permselectivity of 22.48.