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Kozlova, Ekaterina A.,Panchenko, Valentina N.,Hasan, Zubair,Khan, Namzul Abedin,Timofeeva, Maria N.,Jhung, Sung Hwa Elsevier 2016 CATALYSIS TODAY - Vol.266 No.-
<P><B>Abstract</B></P> <P>The effect of metal ions and functional groups in organic ligands on the photocatalytic properties of metal-carboxylates, such as isostructural MIL-100(M) (M=Al, Fe, V, and Cr), isoreticular UiO-66-R (R=H, NH<SUB>2</SUB>, and NO<SUB>2</SUB>), MIL-47(V), and MIL-125(Ti), was investigated using the decolorization of methylene blue in aqueous solution at pH 7.0 and 20°C under UV radiation. The metal-carboxylates were characterized by diffuse reflectance UV/vis measurements. The determination of the band gap (<I>E</I> <SUB> <I>g</I> </SUB>) on the basis of DR-UV/vis measurements showed that <I>E</I> <SUB> <I>g</I> </SUB> values correlate with ionic covalent parameters, i.e., the strength of the interaction between metal and oxygen in the “M<SUP>+<I>n</I> </SUP>-O<SUP>2−</SUP> pair. According to DR-UV/vis spectroscopic and catalytic investigations, the reactivity of metal-carboxylates correlated with the band-gap value (<I>E</I> <SUB> <I>g</I> </SUB>), which could be adjusted by varying the nature of the metal ions in SBUs or functional groups in the organic ligands.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The photocatalytic decolorization of methylene blue dye in aqueous solution was studied. </LI> <LI> Isostructural MIL-100(M) (M=Al, Fe, V and Cr) materials were used as photocatalysts. </LI> <LI> Reactivity of isostructural MIL-100(M) materials depends on the type of metal ions. </LI> <LI> Isoreticular UiO-66-R (H, NH<SUB>2</SUB> and NO<SUB>2</SUB>) materials were used as photocatalysts. </LI> <LI> Reactivity of isoreticular UiO-66-R materials depends on the functional groups in organic ligands. </LI> </UL> </P>
Efficiency Management of the Enterprises Activity Based on the Principles of Innovative Development
Chernoivanova, Hanna,Kozlova, Inna,Kryvobok, Kateryna,Nemashkalo, Karina,Yermolenko, Oleksii International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.12
The article examines the economic essence and approaches to determining the efficiency of the enterprise. The author in the study considers the effectiveness and from the standpoint of qualitative analysis of the effectiveness of change and implementation of enterprise development goals. It is established that the tool for ensuring qualitative impacts on the efficiency of the enterprise is the innovative development of the economic space of the enterprise. The article considers the dominant innovations that have influenced the means and methods of production. An organizational and economic mechanism has been recommended to coordinate the costs of innovation activities in order to ensure the efficiency of enterprises. The object of management in the organizational and economic mechanism is the innovation process in the enterprise: from the design of strategic goals of innovation, search and commercialization of innovations, to building and implementing innovation potential. The efficiency of the enterprise under the condition of realization of innovative potential will be characterized by steady competitive advantages and strategically-oriented behavior in the market.
Mironov, Yuri V.,Naumov, Nikolai G.,Kozlova, Svetlana G.,Kim, Sung-Jin,Fedorov, Vladimir E. WILEY-VCH Verlag 2005 Angewandte Chemie Vol.117 No.42
<B>Graphic Abstract</B> <P>Die Cyanidcluster [Re<SUB>12</SUB>CS<SUB>17</SUB>(CN)<SUB>6</SUB>]<SUP>n−</SUP> (n=8 oder 6) könnten als Bausteine für polymere Materialien dienen. Sie entstehen aus ReS<SUB>2</SUB> in geschmolzenem KCN bei 750 °C. Die Clustereinheit umfasst zwei {Re<SUB>6</SUB>}-Oktaeder, die durch drei μ<SUB>2</SUB>-S-Brücken und ein interstitielles μ<SUB>6</SUB>-C-Atom verbunden sind (siehe Bild). <img src='wiley_img/00448249-2005-117-42-ANGE200501911-content.gif' alt='wiley_img/00448249-2005-117-42-ANGE200501911-content'> </P>
Mironov, Yuri V.,Brylev, Konstantin A.,Kim, Sung-Jin,Kozlova, Svetlana G.,Kitamura, Noboru,Fedorov, Vladimir E. Elsevier 2011 Inorganica chimica acta Vol.370 No.1
<P><B>Graphical abstract</B></P><P>New hexarhenium cyanohydroxo cluster anion [Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]<SUP>4−</SUP> was synthesized and crystallized as a salt of the composition Cs<SUB>2.75</SUB>K<SUB>1.25</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]·H<SUB>2</SUB>O (<B>1</B>). Based on this anion two other compounds, namely [Cu(NH<SUB>3</SUB>)<SUB>5</SUB>]<SUB>2</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]·8H<SUB>2</SUB>O and [{Cu(CH<SUB>3</SUB>NH<SUB>2</SUB>)<SUB>4</SUB>}<SUB>2</SUB>Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>] were synthesized. All of these three compounds were characterized by a single-crystal X-ray diffraction method. The luminescence properties of <B>1</B> were studied in both aqueous solution and solid state. In addition, the electronic structure of [Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]<SUP>4−</SUP> was elucidated by DFT calculations.<ce:figure id='f0005'></ce:figure></P><P><B>Research highlights</B></P><P>► The partial substitution of terminal OH ligands in Re<SUB>6</SUB> cluster complex leads to <I>trans</I>-[Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]<SUP>4−</SUP>. ► The complex synthesized is a new multifunctional building block. ► The compound emits above 600nm in both solid phase and an aqueous solution.</P> <P><B>Abstract</B></P><P>A hexarhenium cyanohydroxo anionic cluster complex [Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]<SUP>4−</SUP> was synthesized for the first time starting from [Re<SUB>6</SUB>Se<SUB>8</SUB>(OH)<SUB>6</SUB>]<SUP>4−</SUP>, which was crystallized as a salt of the composition Cs<SUB>2.75</SUB>K<SUB>1.25</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]·H<SUB>2</SUB>O (<B>1</B>). The reaction of the complex with Cu<SUP>2+</SUP> in an aqueous ammonia or methylamine solutions afforded [Cu(NH<SUB>3</SUB>)<SUB>5</SUB>]<SUB>2</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]·8H<SUB>2</SUB>O (<B>2</B>) or [{Cu(CH<SUB>3</SUB>NH<SUB>2</SUB>)<SUB>4</SUB>}<SUB>2</SUB>Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>] (<B>3</B>), respectively. All of these three compounds were characterized by a single-crystal X-ray diffraction method. Compound <B>1</B> is crystallized in the tetragonal space group <I>I</I>4<I>/m</I> with eight formula units per cell (<I>a</I>=<I>b</I>=17.4823(14)Å, <I>c</I>=19.430(2)Å, <I>V</I>=5938.3(10)Å<SUP>3</SUP>); compound <B>2</B> is crystallized in the monoclinic space group <I>P</I>2<SUB>1</SUB><I>/n</I> with two formula units per cell (<I>a</I>=12.1845(13)Å, <I>b</I>=8.6554(9)Å, <I>c</I>=19.2568(19)Å, <I>β</I>=91.081(2)°, <I>V</I>=2030.5(4)Å<SUP>3</SUP>); compound <B>3</B> is crystallized in the orthorhombic space group <I>Cmcm</I> with four formula units per cell (<I>a</I>=19.816(4)Å, <I>b</I>=14.611(3)Å, <I>c</I>=13.751(3)Å, <I>V</I>=3981.2(13)Å<SUP>3</SUP>). The luminescence properties of <B>1</B> were studied in both aqueous solution and solid state. In addition, the electronic structure of [Re<SUB>6</SUB>Se<SUB>8</SUB>(CN)<SUB>4</SUB>(OH)<SUB>2</SUB>]<SUP>4−</SUP> was elucidated by DFT calculations.</P>
Yarovoi, Spartak S.,Mironov, Yuri V.,Naumov, Dmitry Y.,Gatilov, Yuri V.,Kozlova, Svetlana G.,Kim, Sung-Jin,Fedorov, Vladimir E. WILEY-VCH Verlag 2005 European journal of inorganic chemistry Vol.2005 No.19
<P>Two novel rhenium cluster compounds, K<SUB>4</SUB>[Re<SUB>6</SUB>S<SUB>8</SUB>(OH)<SUB>6</SUB>]·8H<SUB>2</SUB>O (1) and K<SUB>4</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>(OH)<SUB>6</SUB>]·8H<SUB>2</SUB>O (2), containing octahedral cluster chalcogenide anionic complexes [Re<SUB>6</SUB>Q<SUB>8</SUB>(OH)<SUB>6</SUB>]<SUP>4–</SUP> with terminal hydroxo ligands have been synthesized by the reaction of Re<SUB>6</SUB>Q<SUB>8</SUB>Br<SUB>2</SUB> (Q = S, Se) with molten KOH. Two chalcohalide compounds, one known (Cs<SUB>4</SUB>[Re<SUB>6</SUB>S<SUB>8</SUB>Br<SUB>6</SUB>]·2H<SUB>2</SUB>O, 3) and another new (Cs<SUB>3</SUB>[Re<SUB>6</SUB>Se<SUB>8</SUB>Cl<SUB>6</SUB>]·2H<SUB>2</SUB>O, 4), were prepared by reactions of 1 and 2 with CsX and HX (X = Br, Cl) in an aqueous solution. Compounds 1, 2, and 4 have been characterized by the single-crystal X-ray diffraction method. Compounds 1 and 2 are crystallized in triclinic space group P<TEX>$\bar {1}$</TEX> with one formula unit in the cell of dimensions a = 8.4936(8) Å, b = 8.9101(11) Å, c = 10.5940(13) Å, α = 77.935(11)°, β = 75.933(9)°, γ = 71.244(10)°, V = 728.9(1) Å<SUP>3</SUP> (compound 1) and a = 8.613(1) Å, b = 8.996(1) Å, c = 10.057(1) Å, α = 78.587(2)°, β = 77.811(2)°, γ = 71.728(2)°, V = 715.9(2) Å<SUP>3</SUP> (compound 2). Compound 4 crystallizes in the monoclinic space group P2<SUB>1</SUB>/n with two formula units in the cell of dimensions a = 9.819(3) Å, b = 12.925(4) Å, c = 11.756(4) Å, β = 113.38(3)°, V = 1369.6(8) Å<SUP>3</SUP>. Compounds 1 and 2 display luminescent properties. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)</P> <B>Graphic Abstract</B> <P> <img src='wiley_img/14341948-2005-2005-19-EJIC200500284-fig000.gif' alt='wiley_img/14341948-2005-2005-19-EJIC200500284-fig000'> </P>
Toward compact and ultra-intense laser-based soft x-ray lasers
Sebban, S,Depresseux, A,Oliva, E,Gautier, J,Tissandier, F,Nejdl, J,Kozlova, M,Maynard, G,Goddet, J P,Tafzi, A,Lifschitz, A,Kim, H T,Jacquemot, S,Rousseau, P,Zeitoun, P,Rousse, A IOP 2018 Plasma physics and controlled fusion Vol.60 No.1
<P>We report here recent work on an optical field ionized (OFI), high-order harmonic-seeded EUV laser. The amplifying medium is a plasma of nickel-like krypton obtained by OFI when focusing a 1 J, 30 fs, circularly-polarized, infrared pulse into a krypton-filled gas cell or krypton gas jet. The lasing transition is the 3d<SUP>9</SUP>4d (<I>J</I>?=?0)?→?3d<SUP>9</SUP>4p (<I>J</I>?=?1) transition of Ni-like krypton ions at 32.8 nm and is pumped by collisions with hot electrons. The gain dynamics was probed by seeding the amplifier with a high-order harmonic pulse at different delays. The gain duration monotonically decreased from 7 ps to an unprecedented shortness of 450 fs full width at half-maximum as the amplification peak rose from 150 to 1200 with an increase of the plasma density from 3?×?10<SUP>18</SUP> to 1.2?×?10<SUP>20</SUP> cm<SUP>−3</SUP>. The integrated energy of the EUV laser pulse was also measured, and found to be around 2 <I>μ</I>J. It is to be noted that in the ASE mode, longer amplifiers were achieved (up to 2 cm), yielding EUV outputs up to 14 <I>μ</I>J.</P>
Demonstration of a Circularly Polarized Plasma-Based Soft-X-Ray Laser
Depresseux, A.,Oliva, E.,Gautier, J.,Tissandier, F.,Lambert, G.,Vodungbo, B.,Goddet, J-P.,Tafzi, A.,Nejdl, J.,Kozlova, M.,Maynard, G.,Kim, H. T.,Phuoc, K. Ta,Rousse, A.,Zeitoun, P.,Sebban, S. American Physical Society 2015 Physical review letters Vol.115 No.8