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Hou Y Jaffrezic-Renault N Martelet C Tlili C Zhang A Pernollet JC Briand L Gomila G Errachid A Samitier J Salvagnac L Torbiéro B Temple-Boyer P 《Langmuir : the ACS journal of surfaces and colloids》2005,21(9):4058-4065
To make ultrathin films for the fabrication of artificial olfactory systems, odorant biosensors, we have investigated mixed Langmuir and Langmuir-Blodgett films of odorant-binding protein/amphiphile. Under optimized experimental conditions (phosphate buffer solution, pH 7.5, OBP-1F concentration of 4 mg L(-1), target pressure 35 mN m(-1)), the mixed monolayer at the air/water interface is very stable and has been efficiently transferred onto gold supports, which were previously functionalized by self-assembled monolayers (SAMs) with 1-octadecanethiol (ODT). Atomic force microscopy and electrochemical impedance spectroscopy were used to characterize mixed Langmuir-Blodgett (LB) films before and after contact with a specific odorant molecule, isoamyl acetate. AFM phase images show a higher contrast after contact with the odorant molecule due to the new structure of the OBP-1F/ODA LB film. Non-Faradaic electrochemical spectroscopy (EIS) is used to quantify the effect of the odorant based on the electrical properties of the OBP-1F/ODA LB film, as its resistance strongly decreases from 1.18 MOmega (before contact) to 25 kOmega (after contact). 相似文献
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Ali Raza Hala A. Hejazi Sami Ullah Khan M. Ijaz Khan Kamel Smida Iskander Tlili 《印度化学会志》2022,99(7):100568
In this investigation, a mixed convective nanoparticles fluid flow over an inclined plate is deliberated. The effects of slip boundary wall and magnetic field are also considered. The dimensionless governing system for the considered problem is attained by implementing recent definitions of fractional derivatives (FD). The generalized solution is obtained through the Laplace Transformation Scheme (LTS) for the momentum and thermal expressions. To improve the novelty and to demonstrate some more physical perception of the stated research work, some remarkable special cases of velocity distribution through CF and AB-fractional derivative concept are addressed, whose daily life implication is well known in the existing literature. Moreover, to evaluate the physical interest of the stated problem, the outcomes of the obtained system graphical illustrations are made by utilizing MATHEMATICA. As a result, we concluded that the aluminium oxide nanoparticles show more decaying behavior as compared to titanium oxide nanoparticles for temperature and velocity profile. Furthermore, both fields i.e., momentum and thermal distributions are increased with the help of rising estimations parameter. Current results report novel applications in enhancement of heat transfer, thermal engineering, chemical processes, engineering and electronics devices, solar systems, extrusion processes, fission reactions etc. 相似文献
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Sarafraz M. M. Tian Zhe Tlili I. Kazi Sabeena Goodarzi Marjan 《Journal of Thermal Analysis and Calorimetry》2020,139(4):2435-2445
Journal of Thermal Analysis and Calorimetry - In the present study, a set of experiments were accomplished to appraise the thermal performance and heat transfer of n-pentane-acetone and... 相似文献
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Tlili Iskander Hamadneh Nawaf N. Khan Waqar A. Atawneh Samer 《Journal of Thermal Analysis and Calorimetry》2018,132(3):1899-1912
Journal of Thermal Analysis and Calorimetry - This study will focus on the first- and second-law analyses of MHD Couette–Poiseuille flow of water-based nanofluids in a rotating permeable... 相似文献
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Clément Ghiazza Vincent Debrauwer Dr. Cyrille Monnereau Lhoussain Khrouz Dr. Maurice Médebielle Dr. Thierry Billard Dr. Anis Tlili 《Angewandte Chemie (International ed. in English)》2018,57(36):11781-11785
The first visible‐light‐mediated synthesis of trifluoromethylselenolated arenes under metal‐free conditions is reported. The use of an organic photocatalyst enables the trifluoromethylselenolation of arene diazonium salts using the shelf‐stable reagent trifluoromethyl tolueneselenosulfonate at room temperature. The reaction does not require the presence of any additives and shows high functional‐group tolerance, covering a very broad range of starting materials. Mechanistic investigations, including EPR spectroscopy, luminescence investigations, and cyclic voltammetry allow rationalization of the reaction mechanism. 相似文献
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Abdelmalek Zahra Khan Sami Ullah Waqas Hassan Riaz Arshad Khan Israr Ali Tlili Iskander 《Journal of Thermal Analysis and Calorimetry》2021,144(1):205-217
Journal of Thermal Analysis and Calorimetry - The significant bioconvection phenomenon with the utilization of nanoparticles encountered fundamental industrial and technological applications in... 相似文献
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Calcium carbonate crystallization process, especially the prenucleation stage, has increasingly been the subject of several works. In the present work, a simple method based on electrical conductivity modeling applied to the FCP (Fast Controlled Precipitation) method data is used to highlight the role of CaCO3o ion pairs on calcium carbonate prenucleation stage. A good agreement was obtained between the resistivity vs pH curves estimated by the McCleskey model equation and obtained experimentally in a FCP test. Results showed that the nucleation process begins with the formation of CaCO3o ion pairs as pre‐nuclei as soon as the calcite‐equilibrium pH is reached. Additionally CaCO3o content increases with pH to form aggregates, which depend on the saturation state of the solution. Basing on our thermodynamic data, these aggregates do not form amorphous calcium carbonate ACC as an intermediate phase. They lead to the formation of stable calcium carbonate nuclei which will further evolve to crystallize. Furthermore we demonstrate that in addition to their inhibitory effect on the Ca2+ and CO32− association to form ion pairs, the two scale inhibitors sodium triphosphate (STP) and sodium polyacrylate (RPI) reduce ion pairs aggregation rate. 相似文献
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Yi Yang Renhe Tang Dr. Seifallah Abid Lhoussain Khrouz Dr. Julien C. Vantourout Dr. Anis Tlili 《European journal of organic chemistry》2023,26(36):e202300619
We report the photocatalyzed C−SCF3 bond formation using a new shelf-stable PhPh-N-(SCF3)(CF3) reagent I in combination with 4CzIPN as organophotocatalyst under blue LED irradiation. While the synthesis of vinyl-SCF3 is performed in the presence of bromide salts as an activator of reagent I , the synthesis of trifluoromethylthioesters was undertaken using aldehydes as starting material in the presence of a hydrogen atom transfer catalyst (HAT). Preliminary mechanistic investigations including EPR spectroscopy and cyclic voltammetry analysis shed the light on the reaction mechanisms. 相似文献