10 research outputs found

    New way to create high-speed LCDs based on the use of modified nanomaterials

    Get PDF
    Modified β€œdetonation nanodiamond” (MDND), graphene oxide (MGO) and nanoclay (MNC) were doped to nematic (NLCs) and ferroelectric liquid crystals (FLCs). The effect of modified nanomaterials on the physical and electro-optical properties of liquid crystals was investigated

    ΠžΠŸΠ’Π˜Π§Π•Π‘ΠšΠ˜Π• Π‘Π’ΠžΠ™Π‘Π’Π’Π ΠšΠžΠœΠŸΠ›Π•ΠšΠ‘ΠžΠ’ Π£Π›Π¬Π’Π ΠΠ”Π˜Π‘ΠŸΠ•Π Π‘ΠΠ«Π₯ ΠΠ›ΠœΠΠ—ΠžΠ’ Π”Π•Π’ΠžΠΠΠ¦Π˜ΠžΠΠΠžΠ“Πž Π‘Π˜ΠΠ’Π•Π—Π Π‘ Π˜ΠΠ”ΠžΠ’Π Π˜ΠšΠΠ Π‘ΠžΠ¦Π˜ΠΠΠ˜ΠΠžΠ’Π«Πœ ΠšΠ ΠΠ‘Π˜Π’Π•Π›Π•Πœ

    Get PDF
    A method to create complexes of detonation nanodiamonds with molecules of an indotricarbocyanine dye was developed. The process of complex formation was shown to depend on the nanodiamond annealing conditions. Nanodiamonds that were vacuum annealed at 750oC display the most effective interaction with the dye molecules. Formation of the complexes was studied with the aid of optical spectroscopy in the visible and infrared regions.Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ получСния комплСксов ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½Ρ‹Ρ… Π°Π»ΠΌΠ°Π·ΠΎΠ² Π΄Π΅Ρ‚ΠΎΠ½Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ синтСза с ΠΌΠΎΠ»Π΅ΠΊΡƒΠ»Π°ΠΌΠΈ ΠΈΠ½Π΄ΠΎΡ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ краситСля. Показано, Ρ‡Ρ‚ΠΎ Π½Π° процСсс комплСксообразования Π²Π»ΠΈΡΡŽΡ‚ условия тСрмичСской ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π½Π°Π½ΠΎΠ°Π»ΠΌΠ°Π·ΠΎΠ². НаиболСС эффСктивноС взаимодСйствиС с краситСлСм проявляСтся для ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½Ρ‹Ρ… Π°Π»ΠΌΠ°Π·ΠΎΠ², ΠΎΡ‚ΠΎΠΆΠΆΠ΅Π½Π½Ρ‹Ρ… Π² Π²Π°ΠΊΡƒΡƒΠΌΠ΅ ΠΏΡ€ΠΈ 750ΠΎΠ‘. ΠŸΡ€ΠΎΡ†Π΅ΡΡ образования комплСксов ΠΈΠ·ΡƒΡ‡Π΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ оптичСской спСктроскопии Π² Π²ΠΈΠ΄ΠΈΠΌΠΎΠΉ ΠΈ инфракрасной областях

    ΠšΠ°Ρ‚Π°Π»ΠΈΡ‚ΠΈΡ‡Π΅ΡΠΊΠΈΠ΅ систСмы для Ρ€Π΅Π°ΠΊΡ†ΠΈΠΉ кросс-сочСтания Π½Π° основС ΠΌΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½Ρ‹Ρ… Π°Π»ΠΌΠ°Π·ΠΎΠ²

    Get PDF
    Methods for preparation of nanocomposites of modified detonation nanodiamonds (DND) with metallic palladium have been developed and their catalytic activity in the Suzuki-Miyaura cross-coupling reaction in various reaction media has been studied. Methods for the regeneration of palladium-containing nanocomposites from the reaction mixture have been developed. The high catalytic activity of nanocomposites is confirmed by kinetic analysis based on the results of chromatographic analysis of the reaction mixture and is comparable to the literature data about similar catalytic systems. Regenerated nanocomposites showed the retention of catalytic activity for 3 consecutive cross-coupling cycles on model systems.Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ получСния Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚ΠΎΠ² ΠΌΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½ΠΎΠ³ΠΎ Π°Π»ΠΌΠ°Π·Π° Π΄Π΅Ρ‚ΠΎΠ½Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ синтСза с мСталличСским ΠΏΠ°Π»Π»Π°Π΄ΠΈΠ΅ΠΌ ΠΈ ΠΈΠ·ΡƒΡ‡Π΅Π½Π° ΠΈΡ… каталитичСская Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π² Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ кросс-сочСтания Π‘ΡƒΠ·ΡƒΠΊΠΈ-ΠœΠΈΡΡƒΡ€Ρ‹ Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ€Π΅Π°ΠΊΡ†ΠΈΠΎΠ½Π½Ρ‹Ρ… срСдах. Π˜ΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ‹ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠΈ Ρ€Π΅Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΠΈ палладийсодСрТащих Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚ΠΎΠ² ΠΈΠ· Ρ€Π΅Π°ΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠΉ смСси. ΠšΠ°Ρ‚Π°Π»ΠΈΡ‚ΠΈΡ‡Π΅ΡΠΊΠ°Ρ Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚ΠΎΠ² ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π΅Π½Π° исслСдованиСм ΠΊΠΈΠ½Π΅Ρ‚ΠΈΠΊΠΈ Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ кросс-сочСтания хроматографичСским Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ Ρ€Π΅Π°ΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠΉ смСси ΠΈ сопоставима с ΡƒΠΆΠ΅ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹ΠΌΠΈ ΠΏΠΎΠ΄ΠΎΠ±Π½Ρ‹ΠΌΠΈ ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€Π°ΠΌΠΈ. Π Π΅Π³Π΅Π½Π΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ‚Ρ‹ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ сохранСниС каталитичСской активности для 3 ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… Ρ†ΠΈΠΊΠ»ΠΎΠ² кросс-сочСтания Π½Π° ΠΌΠΎΠ΄Π΅Π»ΡŒΠ½Ρ‹Ρ… систСмах

    Optical properties of the complexes of detonation nanodiamonds with an indotricarbocyanine dye

    Get PDF
    Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ получСния комплСксов ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½Ρ‹Ρ… Π°Π»ΠΌΠ°Π·ΠΎΠ² Π΄Π΅Ρ‚ΠΎΠ½Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ синтСза с ΠΌΠΎΠ»Π΅ΠΊΡƒΠ»Π°ΠΌΠΈ ΠΈΠ½Π΄ΠΎΡ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ краситСля. Показано, Ρ‡Ρ‚ΠΎ Π½Π° процСсс комплСксообразования Π²Π»ΠΈΡΡŽΡ‚ условия тСрмичСской ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π½Π°Π½ΠΎΠ°Π»ΠΌΠ°Π·ΠΎΠ². НаиболСС эффСктивноС взаимодСйствиС с краситСлСм проявляСтся для ΡƒΠ»ΡŒΡ‚Ρ€Π°Π΄ΠΈΡΠΏΠ΅Ρ€ΡΠ½Ρ‹Ρ… Π°Π»ΠΌΠ°Π·ΠΎΠ², ΠΎΡ‚ΠΎΠΆΠΆΠ΅Π½Π½Ρ‹Ρ… Π² Π²Π°ΠΊΡƒΡƒΠΌΠ΅ ΠΏΡ€ΠΈ 750 ΠΎΠ‘. ΠŸΡ€ΠΎΡ†Π΅ΡΡ образования комплСксов ΠΈΠ·ΡƒΡ‡Π΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ оптичСской спСктроскопии Π² Π²ΠΈΠ΄ΠΈΠΌΠΎΠΉ ΠΈ инфракрасной областях. A method to create complexes of detonation nanodiamonds with molecules of an indotricarbocyanine dye was developed. The process of complex formation was shown to depend on the nanodiamond annealing conditions. Nanodiamonds that were vacuum annealed at 750 oC display the most effective interaction with the dye molecules. Formation of the complexes was studied with the aid of optical spectroscopy in the visible and infrared regions

    Spectral and luminescent properties and morphology of self-assembled nanostructures of an indotricarbocyanine dye

    No full text
    Spectral and luminescent properties of an indotricarbocyanine dye are studied in solutions and after deposition on quartz or silicon substrates. It is found that the dye molecules self-assemble in aqueous EtOH solutions to form H*-aggregates. The absorption band of the H*-aggregates shows a hypsochromic shift of 192 nm (5291 cm–1) relative to the absorption maximum of dye monomers (706 nm) and has a full width at half maximum of 21 nm (797 cm–1). The morphology of the H*-aggregates of the indotricarbocyanine dye is studied for the fi rst time. It is found that the aggregates are rod-like species ~10 nm high, 100 nm wide, and several micrometers long. H-aggregates with a fl uorescence maximum at 560 nm and Stokes shift of 325 cm–1 in addition to non-fl uorescent H*-aggregates form in aqueous EtOH solutions and are nanoparticles with a height of 1–3 nm and lateral dimensions of ~100 nm

    Novel indotricarbocyanine dyes covalently bonded to polyethylene glycol for theranostics

    No full text
    The synthesis methods for the indotricarbocyanine dyes covalently bonded to polyethylene glycols with varying degrees of polymerization have been developed. New indotricarbocyanine was synthesized in one step using the Mukayama reagent in polyethylene glycol with cesium fluoride as a basic catalyst. In vivo investigation of the phototherapeutic dye activity has shown selective recognition of malignant tissues, where accumulation of the dye was 4–5 times higher than in normal tissues. The necrotic area after local photoirradiation at the effective energy fluence 180 J/cm2, l = 780 nm was observed to a depth of 2.5 cm making the synthesized dyes very promising for further pharmaceutic researc

    Novel indotricarbocyanine dyes covalently bonded to polyethylene glycol for theranostics

    No full text
    The synthesis methods for the indotricarbocyanine dyes covalently bonded to polyethylene glycols with varying degrees of polymerization have been developed. New indotricarbocyanine was synthesized in one step using the Mukayama reagent in polyethylene glycol with cesium fluoride as a basic catalyst. In vivo investigation of the phototherapeutic dye activity has shown selective recognition of malignant tissues, where accumulation of the dye was 4–5 times higher than in normal tissues. The necrotic area after local photoirradiation at the effective energy fluence 180 J/cm2, l = 780 nm was observed to a depth of 2.5 cm making the synthesized dyes very promising for further pharmaceutic researc

    Gel-electrophoresis of complexes of tricarbocyanine dyes with blood plasma proteins

    Get PDF
    Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Ρ‹ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований комплСксобразования Ρ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²Ρ‹Ρ… краситСлСй с Π±Π΅Π»ΠΊΠ°ΠΌΠΈ ΠΏΠ»Π°Π·ΠΌΡ‹ ΠΊΡ€ΠΎΠ²ΠΈ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ элСктрофорСза Π² ΠΏΠΎΠ»ΠΈΠ°ΠΊΡ€ΠΈΠ»Π°ΠΌΠΈΠ΄Π½ΠΎΠΌ Π³Π΅Π»Π΅. Основная полоса поглощСния исслСдованных краситСлСй располоТСна Π² Π±Π»ΠΈΠΆΠ½Π΅ΠΉ ИК-области, Ρ‡Ρ‚ΠΎ ослоТняСт ΠΈΡ… Π²ΠΈΠ·ΡƒΠ°Π»ΡŒΠ½ΠΎΠ΅ ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΈΠ΅ Π½Π° элСктрофорСграммС. Π’ связи с этим дСтСктирования Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ краситСлСй Π²Ρ‹ΠΏΠΎΠ»Π½ΡΠ»ΠΎΡΡŒ ΠΏΠΎ ΠΈΡ… флуорСсцСнции с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ флуорСсцСнтного спСктромСтра. Для сканирования Π³Π΅Π»Π΅ΠΉ с ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚Π½ΠΎΠΉ привязкой использовано устройство, состоящСС ΠΈΠ· ΠΏΠ΅Ρ€Π΅ΠΌΠ΅Ρ‰Π°Π΅ΠΌΠΎΠΉ микромСтричСскими Π²ΠΈΠ½Ρ‚Π°ΠΌΠΈ ΠΏΠ»Π°Ρ‚Ρ„ΠΎΡ€ΠΌΡ‹, Π½Π° ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ пСрпСндикулярно плоскости измСрСния закрСплялся Π΄Π΅Ρ€ΠΆΠ°Ρ‚Π΅Π»ΡŒ свСтовода спСктромСтра. Π‘ΠΊΠ°Π½ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Π³Π΅Π»Π΅ΠΉ Π²Ρ‹ΠΏΠΎΠ»Π½ΡΠ»ΠΎΡΡŒ Π΄ΠΎ стадии ΠΎΠΊΡ€Π°ΡˆΠΈΠ²Π°Π½ΠΈΡ ΠΈ Π²ΠΈΠ·ΡƒΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ Π±Π΅Π»ΠΊΠΎΠ², Π½Π° ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ Π±Ρ‹Π»ΠΎ ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½Π° нСобратимая дСструкция Ρ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²Ρ‹Ρ… краситСлСй. ΠšΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚Ρ‹ Ρ„ΠΈΠΊΡΠΈΡ€ΠΎΠ²Π°Π»ΠΈΡΡŒ ΠΎΡ‚Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π³Ρ€Π°Π½ΠΈΡ† Π³Π΅Π»Π΅ΠΉ, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΠΎΠ²ΠΌΠ΅ΡΡ‚ΠΈΡ‚ΡŒ распрСдСлСниС Π±Π΅Π»ΠΊΠΎΠ² ΠΈ ΠΈΠ½Π΄ΠΎΡ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²Ρ‹Ρ… краситСлСй Π½Π° элСктрофорСграммС. Π‘Π΅Π»ΠΊΠΈ Π² комплСксах с краситСлями ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π»ΠΈΡΡŒ ΠΏΠΎ ΠΈΡ… молСкулярной массС. На ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ исслСдования с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ гСль-элСктрофорСза ΠΎΠΊΡ€Π°ΡˆΠ΅Π½Π½Ρ‹Ρ… Ρ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²Ρ‹ΠΌΠΈ краситСлями растворов чСловСчСской сыворотки ΠΊΡ€ΠΎΠ²ΠΈ ΠΈ Π±Ρ‹Ρ‡ΡŒΠ΅Π³ΠΎ сывороточного Π°Π»ΡŒΠ±ΡƒΠΌΠΈΠ½Π° ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ обнаруТСния ΠΈ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ комплСксов краситСлСй с Π±Π΅Π»ΠΊΠ°ΠΌΠΈ сыворотки ΠΊΡ€ΠΎΠ²ΠΈ. Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ установлСно, Ρ‡Ρ‚ΠΎ Ρ‚Ρ€ΠΈΠΊΠ°Ρ€Π±ΠΎΡ†ΠΈΠ°Π½ΠΈΠ½ΠΎΠ²Ρ‹Π΅ краситСли с Ρ…Π»ΠΎΡ€Π·Π°ΠΌΠ΅Ρ‰Π΅Π½Π½Ρ‹ΠΌ ΠΎΡ€Ρ‚ΠΎΡ„Π΅Π½ΠΈΠ»Π΅Π½ΠΎΠ²Ρ‹ΠΌ мостиком способны ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Ρ‹Π²Π°Ρ‚ΡŒ ΠΊΠΎΠ²Π°Π»Π΅Π½Ρ‚Π½Ρ‹Π΅ комплСксы с Π°Π»ΡŒΠ±ΡƒΠΌΠΈΠ½ΠΎΠΌ ΠΈ АполипопротСин A-I, основным структурным элСмСнтом Π»ΠΈΠΏΠΎΠΏΡ€ΠΎΡ‚Π΅ΠΈΠ½ΠΎΠ² высокой плотности. Показано, Ρ‡Ρ‚ΠΎ полиэтилСнгликоли с молСкулярной массой 300 Π”Π° Π½Π° ΠΊΠΎΠ½Ρ†Π΅Π²Ρ‹Ρ… Π³Ρ€ΡƒΠΏΠΏΠ°Ρ… краситСлСй Π½Π΅ Π²Π»ΠΈΡΡŽΡ‚ Π½Π° это свойство. The paper presents the results of studies of the complexation of tricarbocyanine dyes with blood plasma proteins using polyacrylamide gel electrophoresis. The main absorption band of the dyes under study is located in the nearIR region, which complicates their visual detection on an electrophoregram. In this regard, the detection of localization of dyes was carried out by their fluorescence using a laser fluorescence spectrometer. For scanning gels with a coordinate binding, a device was used, which consisted of a platform movable by micrometric screws, on which the spectrometer fiber holder was fixed perpendicular to the measurement plane. Scanning of the gels was performed until the stage of staining and visualization of proteins, at which irreversible destruction of tricarbocyanine dyes was detected. The coordinates were fixed relative to the boundaries of the gels, which made it possible to combine the distribution of proteins and indotricarbocyanine dyes on the electrophoregram. Proteins in complexes with dyes were identified by their molecular weight. On the example of a study using gel electrophoresis of solutions of human serum and bovine serum albumin stained with tricarbocyanine dyes, the possibility of detecting and identifying complexes of dyes with blood serum proteins has been shown. As a result, it was found that tricarbocyanine dyes with a chlorine-substituted orthophenylene bridge are able to form covalent complexes with albumin and Apolipoprotein A-I, the main structural element of high-density lipoproteins. It has been shown that polyethylene glycols with a molecular weight of 300 Da at the end groups of dyes do not affect this property
    corecore