• 제목/요약/키워드: Ruthenium complex

검색결과 58건 처리시간 0.029초

Ruthenium Complex-catalyzed Highly Selective Co-oligomerization of Alkenes

  • Ura, Yasuyuki;Tsujita, Hiroshi;Mitsudo, Take-Aki;Kondo, Teruyuki
    • Bulletin of the Korean Chemical Society
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    • 제28권12호
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    • pp.2139-2152
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    • 2007
  • Ruthenium complex-catalyzed reactions often require highly qualified tuning of reaction conditions with substrates to attain high yield and selectivity of the products. In this review, our strategies for achieving characteristic ruthenium complex-catalyzed co-oligomerization of different alkenes are disclosed: 1) The codimerization of 2-norbornenes with acrylic compounds by new ruthenium catalyst systems of RuCl3(tpy)/Zn [tpy = 2,2':6',2''-terpyridine] or [RuCl2(η6-C6H6)]2/Zn in alcohols, 2) A novel synthesis of 2-alkylidenetetrahydrofurans from dihydrofurans and acrylates by zerovalent ruthenium catalysts, such as Ru(η4-cod)(η6-cot) [cod = 1,5-cyclooctadiene, cot = 1,3,5-cyclooctatriene] and Ru(η6-cot)(η2-dmfm)2 [dmfm = dimethyl fumarate], 3) Regio- and stereoselective synthesis of enamides by Ru(η6-cot)(η2-dmfm)2-catalyzed codimerization of N-vinylamides with alkenes, and 4) Unusual head-to-head dimerization of styrenes and linear codimerization of styrenes with ethylene by Ru(η6-cot)(η2-dmfm)2 catalyst in the presence of primary alcohols.

피콜리닉산 리간드를 갖는 염료감응형 태양전지용 루테늄 염료 합성과 특성분석 (Synthesis and Characterization of an Organometallic Ruthenium Complex Bearing 4-Picolinic Acid Ligands for Dye-Sensitized Solar Cells (DSSCs))

  • 정혜인;안병관
    • 한국전기전자재료학회논문지
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    • 제29권3호
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    • pp.192-197
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    • 2016
  • A novel heteroleptic ruthenium(II) complex bearing a 4-picolinic acid unit as anchoring ligands (trans-dithiocyanato bis(4-picolinic acid)ruthenium(II) (trans-H1)) was synthesized and its chemical structure was identified by $^1H$-NMR, FT-IR and mass spectroscopy. The optical, thermal, electrochemical and dye adsorption properties of trans-H1 dye were investigated and compared with those of the gold standard ruthenium complex, Ru(4,4'-dicarboxy-2,2'-bipyridine)$_2cis(NCS)_2$ (N3). DSSCs based on trans-H1 dyes were examined under the illumination of AM 1.5 G, $100mWcm^{-2}$ and exhibited typical photovoltaic properties with an open-circuit voltage ($V_{OC}$) of 0.46 V, a short-circuit current ($J_{SC}$) of $4.10mA{\cdot}cm^{-2}$, a fill factor (FF) of 60.4%, and a conversion efficiency (PCE) of 1.14%.

Electrochemical Polymerization of Ruthenium(II) Complex and Application to Acetaminophen Analysis

  • Kannan, Sethuraman;Son, Jung-Ik;Yang, Jee-Eun;Shim, Yoon-Bo
    • Bulletin of the Korean Chemical Society
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    • 제32권4호
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    • pp.1341-1345
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    • 2011
  • A novel ruthenium(II) complex, [$RuCl_2(DMSO)_2$(PhenTPy)] has been synthesized by the condensation of $RuCl_2(DMSO)_4$ with (1-(1,10-phenanthrolinyl)-2,5-di(2-thienyl)-1H-pyrrole)[PhenTPy] in $CHCl_3$ solution. The [$RuCl_2(DMSO)_2$(PhenTPy)] complex modified electrode was fabricated through the electropolymerization of the monomer in a 0.1 M tetrabutylammonium perchlorate (TBAP)/$CH_2Cl_2$ solution, to take advantage of the electronic communication between metal ion center by the conjugated backbone. The UV-visible spectroscopy (UV), mass spectrometry (MS), and cyclic voltammetry (CV) were employed to characterize the [$RuCl_2(DMSO)_2$(PhenTPy)] complex and its polymer (poly-Ru(II)Phen complex). The poly-Ru(II)Phen complex modified electrode exhibited an electrocatalytic activity to the oxidation of acetaminophen and the catalytic property was used for the analysis of acetaminophen at the concentration range between 0.09 and 0.01 mM in a phosphate buffer solution (pH 7.0).

루테늄-쿠페론의 전기화학적 행동 및 응용 (Electrochemical behavior and Application of Ruthenium-Cupferron Complex)

  • 권영순;박소영
    • 분석과학
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    • 제17권6호
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    • pp.464-469
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    • 2004
  • 순환 전압전류법을 이용하여, 1 mM 인산염 완충용액에서 루테늄-쿠페론 착물의 전기화학적 행동을 살펴보았다. 루테늄 정량의 최적 조건은 1 mM 인산염 완충용액 (pH 6.0), 0.1 mM 쿠페론의 용액에서 주사속도는 100 mV/s 이었다. 이 조건에서 농도 변화에 따른 선형 주사 전압곡선의 환원 봉우리 전류변화를 이용하여 얻은 루테늄의 검출 한계 ($3{\sigma}$)는 $1.2{\times}10^{-7}M$ 이다.

염료감응 태양전지용 루테늄 금속착체 염료의 이산화티타늄 전극에 대한 동적 흡착 연구 (Adsorption Kinetic Study of Ruthenium Complex Dyes onto TiO2 Anodes for Dye-sensitized Solar Cells (DSSCs))

  • 안병관
    • 한국전기전자재료학회논문지
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    • 제24권11호
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    • pp.929-934
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    • 2011
  • The adsorption kinetic study of ruthenium complex, N3, onto nanoporous titanium dioxide ($TiO_2$) photoanodes has been carried out by measuring dye uptake in-situ. Three simplified kinetic models including a pseudo first-order equation, pseudo second-order equation and intraparticle diffusion equation were chosen to follow the adsorption process. Kinetic parameters, rate constant, equilibrium adsorption capacities and related coefficient coefficients for each kinetic model were calculated and discussed. It was shown that the adsorption kinetics of N3 dye molecules onto porous $TiO_2$ obeys pseudo second-order kinetics with chemisorption being the rate determining step. Additionally the heterogeneous surface and the pore size distribution of porous $TiO_2$ adsorbents were also discussed.

SBA-15 실리카에 고정화된 ruthenium 촉매를 사용한 Microwave하에서의 비대칭 수소 전달반응 (Microwave-mediated Asymmetric Hydrogen Transfer by SBA-15-supported Ruthenium Catalyst)

  • 진명종;전인철
    • Korean Chemical Engineering Research
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    • 제46권4호
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    • pp.752-755
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    • 2008
  • 메조포러스 SBA-15 silica와 (1R,2R)-N-(trimethoxysilylpropyl-N-sulfonyl)-1,2-cyclohaxanediamine 또는 (1R,2R)-N-(trimethoxysilylpropyl-N-sulfonyl)-1,2-diphenylethylenediamine과의반응을통하여 메조포러스 silica SBA-15-supported TsCHDA와 TsDPEN가 각각 제조되어졌다. SBA-15-supported TsCHDA로부터 얻어진 ruthenium complex들은 microwave하에서의 케톤의 비대칭 수소 전달반응에서 우수한 촉매능과 만족할 만한 거울상 입체선택도를 주었다. 이불균일상 SBA-15-supported ruthenium 촉매는 사용이 용이하게 안정할 뿐 만 아니라, 재사용 할 수 있었다. 비대칭 수소전달반응을 위한 microwave를 사용한 효율적인 공정이 개발되었다.