• 한국응용곤충학회지
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• 제58권1호
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• pp.31-35
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• 2019

많은 산림해충들은 목재검역에서 문제가 되고 있어 포스핀($PH_3$)을 이용하여 광릉긴나무좀, 왕녹나무좀, 노랑애나무좀의 성충에 대한 살충 활성을 조사하였다. 3종의 나무좀류에 대하여 99% 살충활성을 보이는 LCT값은 각각 3.192 (광릉긴나무좀), 0.994 (왕녹나무좀), $0.501mg{\cdot}h/L$ (노랑애나무좀) 순으로 나타났다. 포스핀을 처리한 3종의 나무좀류는 시간이 지남에 따라 살충활성도 증가하였다. 특히 광릉긴나무좀에서는 0.4 mg/L 이상의 농도에서 약제처리 7일 후에 100%의 사충률을 보였다. 이러한 결과로 볼 때 포스핀이 3종의 목재해충 성충에 대해 메칠브로마이드의 대체훈증제로 이용될 수 있을 것으로 판단된다.

• 환경생물
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• 제39권3호
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• pp.336-343
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• 2021

Fumigation of fruits and vegetables during quarantine and pre-shipment(QPS) treatment should be effective with a shorter fumigation time to minimize phytotoxicity. In this research study, a shorter fumigation time, 2 hours exposure which is shorter than that of the current commercial fumigation procedures using a lower dose of ethyl formate (EF) mixed with phosphine (PH₃) on strawberry was investigated. The reciprocal effect between EF and PH₃ against nymphs and adult Myzus persicae (Sulzer) and Tetranychus urticae (Koch) was evaluated. In addition, L(Ct)₅₀ and L(Ct)₉₉ of EF only and EF mixed with PH₃ were analyzed at 5℃ and 20℃. The synergistic ratio (SR) of L(Ct)₅₀ and L(Ct)₉₉ for the nymph and adult stages of M. persicae were >1.0, which indicated a synergistic effect between EF and PH₃. However, the SR values of L(Ct)₅₀ and L(Ct)₉₉ of the nymph and adult stages of T. urticae were ≤1.0 indicating that there was no synergistic effect between the two fumigants against T. urticae. Our results showed that the reciprocal effect between EF and PH₃ has different effects on M. persicae and T. urticae. This could be attributed to the biological and physical differences between the class Arachnida and Insecta. The synergistic effect between EF and PH₃ against M. persicae within a shorter exposure period and without phytotoxicity on fruits and vegetables will significantly benefit the horticultural industry.

• 한국식품저장유통학회지
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• 제6권3호
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• pp.297-302
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• 1999

백삼의 저장해충 방제를 위하여 사용되고 있는 phosphine gas 훈증법의 대체방안 연구의 일환으로, 살충 및 살균 효과를 지닌 5 kGy의 감마선 조사와 훈증처리가 상업적 조건으로 포장된 백삼의 수분, 사포닌, 당, 아미노산 등의 함량에 미치는 영향을 처리 직후와 2$0^{\circ}C$/70% RH 조건에서 6개월 간 저장 후에 비교되었다. 백삼의 초기수분 함량은 8.44%로 살충처리에 따라 변화되지 않았으며, 6개월 간 저장 후에도 10% 수준이 유지되어 비교적 안정한 것으로 나타났다. 주요 ginsenoside 함량은 처리 직후에는 안정하였으나 6개월 간 저장 후에는 훈증처리구와 대조구에서 다소 함량이 감소되었다. 유리당 함량은 감마선 조사에 의해 다소 감소되었고, 6개월 저장 후에는 감마선, 훈증 및 대조구의 순으로 낮은 값을 보였다. 유리아미노산 함량은 감마선과 훈증처리에 의해 약 5% 정도 감소되었으며, 6개월 저장 후에는 모든 시험구에서 15% 내외의 함량이 감소되어 생물학적 품질개선을 위한 감마선이나 훈증 처리보다는 저장조건의 영향이 큰 것으로 나타났다.

• Bulletin of the Korean Chemical Society
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• 제24권4호
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• pp.504-506
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• 2003

• Bulletin of the Korean Chemical Society
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• 제34권3호
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• pp.719-720
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• 2013

• 대한화학회지
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• 제37권9호
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• pp.806-812
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• 1993

Cu(I)(${\beta}$-diketonate) 착화합물로서 $Cu(I)(hfac)PR_3$(P는 phosphine, R은 Me, Et, Bu를 나타낸다) 착물들을 비수용매에서 유리질 탄소전극과 탄소 microelectrode를 사용하여 이들 착물들의 전기화학적 성질을 조사하였다. 아세토니트릴 용액에서 순환 전압-전류법에 의한 $Cu(I)(hfac)PR_3$ 착물들의 환원과정은 최종생성물이 Cu(0)로 가는 1전자 반응으로 진행되었다. 탄소 microelectrode를 이용한 대시간-전류법에 의해서 이들 착물들이 1전자 반응으로 진행됨을 확인하였으며, 확산계수는 $4.5{\sim}6.7{\times} 10^{-6}cm^2$/sec값으로 나타났다.

• 한국전기전자재료학회논문지
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• 제15권6호
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• pp.511-517
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• 2002

The complex 1 $([Cp*Fe(CO)_2]_2-(\mu-CH=CH-CH=CH))$ which have butadiene as a bridge were synthesized from $Cp*(CO)_2FeK$ and cis-3,4-dichlorocyclobutene. The derivatives of complex 1 where one or two carbonyl groups are replaced by phosphine ligands have been prepared by photochemical substitution. The new derivatives $([Cp*Fe(L)_2]_2-(\mu-CH=CH-CH=CH))$ where L = $(Ph_2PCH_2CH_2PPh_2)$ and $([Cp*Fe(CO)(L)]_2-(\mu-CH=CH-CH=CH))$ where L : $PPh_3$ have been characterized from $^^1H-$, $^^13C-$,$^^31P-NMR$ and elemental analysis. Obtained complexes have been studied in electrochemical experiment and UV/VIS-near-IR. The mixed-valence radical cation forms of complex 2, 3 species were found to be delocalized as the Class III. Based on the separation of the waves ($\triangle E$ : 0.470 ~ 0.605 V), the efficiency of electronic communication between two metal centers of cation species leading to stabilization relative to neutral species. The phosphine-substitute complexes (2, 3) displays two reversible oxidation waves and oxidation state of metal centers-dependent color change, electrochromism, was observed from yellow to orange and deep blue in methylene chloride.

• 공업화학
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• 제5권5호
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• pp.843-850
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• 1994

$[NP(OC_6H_5)_{1.7}(OC_6H_4P(Ph)_2$=$CHCH_2CH_2CH_3)_{0.3}]_n$과 같은 포스파젠 고분자에 부착된 Wittig 시약을 $[NP(OC_6H_5)_{1.7}(OC_6H_4Br)_{0.3}]_n$에 n-butyllithium, diphenylchlorophosphine, 그리고 n-butyl iodide 등으로 처리하여 만들었다. 고분자의 반응들은 [$NP(OC_6H_5)_5(OC_6H_4P(Ph)_2$)]와 같은 고리형 삼중체를 이용한 모델반응 조건들을 고려해 이루어졌다. 포스파젠 고분자에 부착된 Wittig 시약과 benzophenone을 반응시켜 원하는 알켄과 고분자에 부착된 phosphine oxide를 성공적으로 만들었다.

• Macromolecular Research
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• 제17권4호
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• pp.221-226
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• 2009

The present study firstly describes the synthesis of novel, thermo-latent initiators based on xanthenyl phosphonium salts with different counter anions and phosphine moieties and secondly examines their efficiency in the bulk polymerization of glycidyl phenyl ether(GPE). The polymerization was performed with phosphonium salt initiators($I_{SbF6}$, $I_{PF6}$, $I_{AsF6}$ and $I_{BF4}$) at ambient temperature to $200^{\circ}C$ for 1 h. The order of initiator activity was $I_{SbF6}>I_{PF6}>I_{AsF6}>I_{BF4}$. To examine the effect of the phosphine moiety on the initiator activity, polymerization was carried out with $I_{SbF6}(Ph_{3}P)$ and $II_{SbF6}(Bu_{3}P)$ at ambient temperature to $170^{\circ}C$ for 1 h. The order of reactivity was $I_{SbF6}>II_{SbF6}$. In general, the conversion percentage increased with increasing polymerization temperature. The thermal stability of these salts was measured by thermo gravimetric analysis(TGA). The solubility of phosphonium salts in various organic solvents and epoxy monomers was also investigated.

• Advances in environmental research
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• 제1권4호
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• pp.289-304
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• 2012

Tris (2-methyl-1-aziridinyl) phosphine oxide (MAPO) is extremely poisonous and persistent in aqueous media. An efficient UV/nano$TiO_2$ process was employed for its mineralization in a high duty falling film photo-reactor based on an experimental design scheme that considers interactions between the main variables. The influencing variables and their range were determined with preliminary studies. The results show substrate mineralization to some extent under mild conditions of: T = $30^{\circ}C$, pH = 8.5, $[MAPO]_0=60\;mg\;L^{-1}$ and $[TiO_2]=110\;mg\;L^{-1}$. The relative importance of the influencing parameters were initial pH > temperature > $[MAPO]_0$ > [$TiO_2$]; while the interdependence of all the parameters was significant. Accordingly, a reduced quadratic expression was developed. Meanwhile, mineralization kinetic studies, based on chemical oxygen demand, revealed a power law model with order of 2.6 during process time until 150 min.