The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform

Victor I Ovcharenko - One of the best experts on this subject based on the ideXlab platform.

  • synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    had been stirred inbenzene for one day, the solution had merely acquired a paleyellow color. Subsequently stirring the reaction mixture for aweek resulted in the formation of an orange-brown solution,from which no products were isolated.Received: January 19, 2007Published Online: February 9, 2007[a] International Tomography Center, Siberian Branch, RussianAcademy of Sciences,Institutskaya Str. 3a, 630090 Novosibirsk, Russian FederationE-mail: Victor.Ovcharenko@tomo.nsc.ru

  • cover picture synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative eur j org chem 12 2006
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    The cover picture shows the synthesis of acetylenyl-substituted nitronyl nitroxides, which affords single crystals under mild conditions, whose structure was studied by direct X-ray analysis. Spin-labeled acetylenes, now accessible to experimenters, have added all the power of alkyne chemistry to nitroxide chemistry. This was first demonstrated in the 1,3-dipolar cycloaddition reaction, which afforded the corresponding pyrazoles. The flask with a solution of a spinlabeled nitroxide reflects the kinetic stability of these compounds over prolonged periods of time in solution and the ensuing efficiency of the one-pot synthesis strategy in obtaining the desired Derivatives. Details are discussed in the article by V. Ovcharenko et al. on p. 2695 ff.

Eugene V Tretyakov - One of the best experts on this subject based on the ideXlab platform.

  • synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    had been stirred inbenzene for one day, the solution had merely acquired a paleyellow color. Subsequently stirring the reaction mixture for aweek resulted in the formation of an orange-brown solution,from which no products were isolated.Received: January 19, 2007Published Online: February 9, 2007[a] International Tomography Center, Siberian Branch, RussianAcademy of Sciences,Institutskaya Str. 3a, 630090 Novosibirsk, Russian FederationE-mail: Victor.Ovcharenko@tomo.nsc.ru

  • cover picture synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative eur j org chem 12 2006
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    The cover picture shows the synthesis of acetylenyl-substituted nitronyl nitroxides, which affords single crystals under mild conditions, whose structure was studied by direct X-ray analysis. Spin-labeled acetylenes, now accessible to experimenters, have added all the power of alkyne chemistry to nitroxide chemistry. This was first demonstrated in the 1,3-dipolar cycloaddition reaction, which afforded the corresponding pyrazoles. The flask with a solution of a spinlabeled nitroxide reflects the kinetic stability of these compounds over prolonged periods of time in solution and the ensuing efficiency of the one-pot synthesis strategy in obtaining the desired Derivatives. Details are discussed in the article by V. Ovcharenko et al. on p. 2695 ff.

A V Podoplelov - One of the best experts on this subject based on the ideXlab platform.

  • synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    had been stirred inbenzene for one day, the solution had merely acquired a paleyellow color. Subsequently stirring the reaction mixture for aweek resulted in the formation of an orange-brown solution,from which no products were isolated.Received: January 19, 2007Published Online: February 9, 2007[a] International Tomography Center, Siberian Branch, RussianAcademy of Sciences,Institutskaya Str. 3a, 630090 Novosibirsk, Russian FederationE-mail: Victor.Ovcharenko@tomo.nsc.ru

  • cover picture synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative eur j org chem 12 2006
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    The cover picture shows the synthesis of acetylenyl-substituted nitronyl nitroxides, which affords single crystals under mild conditions, whose structure was studied by direct X-ray analysis. Spin-labeled acetylenes, now accessible to experimenters, have added all the power of alkyne chemistry to nitroxide chemistry. This was first demonstrated in the 1,3-dipolar cycloaddition reaction, which afforded the corresponding pyrazoles. The flask with a solution of a spinlabeled nitroxide reflects the kinetic stability of these compounds over prolonged periods of time in solution and the ensuing efficiency of the one-pot synthesis strategy in obtaining the desired Derivatives. Details are discussed in the article by V. Ovcharenko et al. on p. 2695 ff.

G V Romanenko - One of the best experts on this subject based on the ideXlab platform.

  • synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    had been stirred inbenzene for one day, the solution had merely acquired a paleyellow color. Subsequently stirring the reaction mixture for aweek resulted in the formation of an orange-brown solution,from which no products were isolated.Received: January 19, 2007Published Online: February 9, 2007[a] International Tomography Center, Siberian Branch, RussianAcademy of Sciences,Institutskaya Str. 3a, 630090 Novosibirsk, Russian FederationE-mail: Victor.Ovcharenko@tomo.nsc.ru

  • cover picture synthesis of alkynyl substituted nitronyl nitroxides through an Organosilicon Derivative eur j org chem 12 2006
    2006
    Co-Authors: Eugene V Tretyakov, G V Romanenko, A V Podoplelov, Victor I Ovcharenko
    Abstract:

    The cover picture shows the synthesis of acetylenyl-substituted nitronyl nitroxides, which affords single crystals under mild conditions, whose structure was studied by direct X-ray analysis. Spin-labeled acetylenes, now accessible to experimenters, have added all the power of alkyne chemistry to nitroxide chemistry. This was first demonstrated in the 1,3-dipolar cycloaddition reaction, which afforded the corresponding pyrazoles. The flask with a solution of a spinlabeled nitroxide reflects the kinetic stability of these compounds over prolonged periods of time in solution and the ensuing efficiency of the one-pot synthesis strategy in obtaining the desired Derivatives. Details are discussed in the article by V. Ovcharenko et al. on p. 2695 ff.

Elena V. Agina - One of the best experts on this subject based on the ideXlab platform.

  • Highly Sensitive Air-Stable Easily Processable Gas Sensors Based on Langmuir–Schaefer Monolayer Organic Field-Effect Transistors for Multiparametric H2S and NH3 Real-Time Detection
    2018
    Co-Authors: Alexey S. Sizov, Elena V. Agina, Oleg V. Borshchev, Askold A. Trul, Viktoriya Chekusova, Alexey A. Vasiliev, Sergei A. Ponomarenko
    Abstract:

    A combination of low limit of detection, low power consumption, and portability makes organic field-effect transistor (OFET) chemical sensors promising for various applications in the areas of industrial safety control, food spoilage detection, and medical diagnostics. However, the OFET sensors typically lack air stability and restoration capability at room temperature. Here, we report on a new design of highly sensitive gas sensors based on Langmuir–Schaefer monolayer organic field-effect transistors (LS OFETs) prepared from Organosilicon Derivative of [1]­benzothieno­[3,2-b]­[1]-benzothiophene. The devices fabricated are able to operate in air and allow an ultrafast detection of different analytes at low concentrations down to tens of parts per billion. The sensors are reusable and can be utilized in real-time air-quality monitoring systems. We show that a direct current response of the LS OFET can be split into the alteration of various transistor parameters, responsible for the interactions with different toxic gases. The sensor response acquiring approach developed allows distinguishing two different gases, H2S and NH3, with a single sensing device. The results reported open new perspectives for the OFET-based gas-sensing technology and pave the way for easy detection of the other types of gases, enabling the development of complex air analysis systems based on a single sensor

  • Luminescent Organic Semiconducting Langmuir Monolayers
    2017
    Co-Authors: Elena V. Agina, Artur A. Mannanov, Alexey S. Sizov, Olga Vechter, Oleg V. Borshchev, Artem V. Bakirov, Maxim A. Shcherbina, Sergei N. Chvalun, Vladislav G. Konstantinov, Vladimir V. Bruevich
    Abstract:

    In recent years, monolayer organic field-effect devices such as transistors and sensors have demonstrated their high potential. In contrast, monolayer electroluminescent organic field-effect devices are still in their infancy. One of the key challenges here is to create an organic material that self-organizes in a monolayer and combines efficient charge transport with luminescence. Herein, we report a novel Organosilicon Derivative of oligothiophene–phenylene dimer D2-Und-PTTP-TMS (D2, tetramethyldisiloxane; Und, undecylenic spacer; P, 1,4-phenylene; T, 2,5-thiophene; TMS, trimethylsilyl) that meets these requirements. The self-assembled Langmuir monolayers of the dimer were investigated by steady-state and time-resolved photoluminescence spectroscopy, atomic force microscopy, X-ray reflectometry, and grazing-incidence X-ray diffraction, and their semiconducting properties were evaluated in organic field-effect transistors. We found that the best uniform, fully covered, highly ordered monolayers were semiconducting. Thus, the ordered two-dimensional (2D) packing of conjugated organic molecules in the semiconducting Langmuir monolayer is compatible with its high-yield luminescence, so that 2D molecular aggregation per se does not preclude highly luminescent properties. Our findings pave the way to the rational design of functional materials for monolayer organic light-emitting transistors and other optoelectronic devices