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93篇 您的检索式:作者名="Kovtun"
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1A sensing mechanism for the detection of carbon nanotubes using selective photoluminescent probes based on ionic complexes with organic dyes显示文摘The multifunctional properties of carbon nanotubes(CNTs)make them a powerful platform for unprecedented innovations in a variety of practical applications.As a result of the surging growth of nanotechnology,nanotubes present a potential problem as an environmental pollutant,and as such,an efficient method for their rapid detection must be established.Here,we propose a novel type of ionic sensor complex for detecting CNTs–an organic dye that responds sensitively and selectively to CNTs with a photoluminescent signal.The complexes are formed through Coulomb attractions between dye molecules with uncompensated charges and CNTs covered with an ionic surfactant in water.We demonstrate that the photoluminescent excitation of the dye can be transferred to the nanotubes,resulting in selective and strong amplification(up to a factor of 6)of the light emission from the excitonic levels of CNTs in the near-infrared spectral range,as experimentally observed via excitation-emission photoluminescence(PL)mapping.The chirality of the nanotubes and the type of ionic surfactant used to disperse the nanotubes both strongly affect the amplification;thus,the complexation provides sensing selectivity towards specific CNTs.Additionally,neither similar uncharged dyes nor CNTs covered with neutral surfactant form such complexes.As model organic molecules,we use a family of polymethine dyes with an easily tailorable molecular structure and,consequently,tunable absorbance and PL characteristics.This provides us with a versatile tool for the controllable photonic and electronic engineering of an efficient probe for CNT detection.Petro Lutsyk Raz Arif Jan Hruby Anatolii Bukivskyi Olexander Vinijchuk Mykola Shandura Viktor Yakubovskyi Yuri Kovtun Graham A Rance Michael Fay Yuri Piryatinski Oleksiy Kachkovsky Anatoli Verbitsky Aleksey Rozhin 2016Light(Science & Applications)2016,5,1:2
2Functional analysis of oxidative stress-activated mitogen-activated protein kinase cascade in plants显示文摘KOVTUN Y CHIU W L TENA Q SHEEN J 2000Proceedings of the National Academy of Sciences USA2000,97,:1
3Role of ultraviolet irradiation and oxidative stress in cataract formation-medical prevention by nutritional antioxidants and metabolic agonists 显示文摘Varma SD Kovtun S Hegde KR 2011Eye Contact Lens2011,37,4:1
4Comparison of all-inside meniscal re- pair devices with matched inside-out suture repair 显示文摘Rosso C Kovtun K Dow W 2011Am J Spoas Med2011,39,12:1
5Attenuation and delay of diabetic cataracts by antioxidants: effectiveness of pyruvate after onset of cataract显示文摘Varma SD Hegde KR Kovtun S 2005Ophthalmologica2005,219,5:1
6Functional analysis of oxidative stress-activated mitogen-activated protein kinases cascade in plants显示文摘KOVTUN Y CHIU W L TENA G 2000Proceedings of the National Academy of Sciences USA2000,97,:1
7Treatment of habitual shoulder dislocation 显示文摘KOVTUN V V FADZHIEV M M 2000Voen Med Zh2000,321,7:1
8Functional analysis of oxidative stress-activated mitogen-activated protein kinase cascade in plants显示文摘KOVTUN Y CHIU W L TENA G 2000PNAS2000,97,:1
9Functional analysis of oxidative stress-activated mitogen-activated protein kinase cascade in plants 显示文摘KOVTUN Y CHIU W L TENA G 2000Proc Natl Acad Sci USA2000,97,6:1
10Viscosity in strongly in- teracting quantum field theories from black hole physics显示文摘Kovtun P K Son D T Starinets A O 2005Physical Review Letters2005,94,11:1
11Role of ultraviolet irradiation and oxidative stress in cataract formation-medical prevention by nutritional antioxidants and metabolic agonists显示文摘Varma SD Kovtun S Hegde KR 2011Eye Contact Lens2011,37,4:1
12Welded structures of 01570 aluminium alloy显示文摘Malinkina T I Markachev N A Kovtun V A 1998Welding International1998,12,7:1
13Inhibition of glycolysis in the retina by oxidative stress:prevention by pyruvate 显示文摘Hegde KR Kovtun S Varma SD 2010Mol Cell Biochem2010,343,12:1
14Oxidative damage to lens in culture:reversibility by pyruvate and ethyl pyruvate显示文摘Varma SD Hegde KR Kovtun S 0,,01:1
15New method for preparing alkyl esters of chloroalkanoic acids 显示文摘Kovtun VY Kol'tsova ZM Yashunskii VG 1978Zhurnal Prikladnoi Khimii1978,51,8:1
16Cholecystostomy in emergent surgery of hepatopancreatobiliary zone organs显示文摘Hanzhy VV Kovtun AS Kovals'ky PS 2007Klin Khir2007,,7:1
17Suppression of Auxin Signal Transduction by a MAPK Cascade in Higher Plants 显示文摘KOVTUN Y CHIU W L ZENG W 1998Nature1998,395,6703:1
18Assessing the value of demand sharing in supply chains 显示文摘Kovtun V Giloni A Hurvich C 2014Naval Research Logistics2014,61,7:1
19Suppression of auxin signal transduction by a MAPK cascade in higher plants显示文摘KOVTUN Y CHIU W L ZENG W et ag 1998Nature1998,395,:1
20Biocompatible quantum dots for biological applications显示文摘Rosenthal SJ Chang JC Kovtun O 0,,01:1
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