نتایج جستجو برای: htab
تعداد نتایج: 33 فیلتر نتایج به سال:
Abstract Dicarboxylic amino acid-based surfactants ( N -dodecyl derivatives of -aminomalonate, -aspartate, and -glutamate) in combination with hexadecyltrimethylammonium bromide (HTAB) form a variety aggregates. Composition concentration-dependent mixtures exhibit liquid crystal, gel, precipitate, clear isotropic phases. Liquid crystalline patterns, formed by surfactant mixtures, were identifie...
Nanoconfined water exhibits various interesting properties, which are not only of fundamental importance but also practical use. Because reverse micelles (RMs) provide versatile ways to prepare nanoconfined water, the understanding their physicochemical properties is essential for developing efficient applications. Although in RMs could be affected by its interaction with RM interface, details ...
Low temperature processed carbon-based perovskite solar cells (C-PSCs) have gained great interest because of low cost and ease fabrication. By replacing the Au electrode with carbon, stable suited for mass-production process can be made. However, power conversion efficiencies (PCEs) C–PSCs still lag behind that PSCs contact. Here we explore (?150 °C) C-PSCs with, where a two-step method is used...
I couldn't have made this far without the help of many people. To all of them I would like to thank. First of all, thanks mum and dad for all your love, understanding and unconditional support. Thanks for being there when I needed you the most and for encouraging me to go on when I felt like giving up. Thanks for teaching me that everything can be learned and that, in the end, every effort gets...
In this paper, a novel membrane triiodide sensor based on a charge-transfer complex of (1,3-diphenyldihydro-1H-imidazole-4,5-dionedioxime) with iodine (CTCI) as a membrane carrier is introduced. The best performance was obtained with a membrane containing 30% polyvinylchloride (PVC), 63% dibutylphthalate (DBP), 5% CTCI and 2% hexadecyltrimethylammonium bromide (HTAB). The electrode shows a Nern...
The removal of heavy metal ions from wastewater by sorptive flotation using Amberlite IR120 as a resin, and column, was investigated. A combined two-stage process is proposed an alternative the metals aqueous solutions. first stage sorption onto followed dispersed-air flotation. on depending contact time, pH, resin dosage, initial concentration studied in batch method .Various parameters such a...
Capacitively coupled contactless conductivity detection (C(4)D) is a new technique providing high sensitivity in capillary electrophoresis (CE) especially for small ions that can otherwise only be determined with indirect methods. In this work, direct determination and validation of valproic acid (VPA) in biological fluids was achieved using CE with C(4)D. VPA is of pharmacological interest bec...
بنزازول ها به خاطر حضور در ترکیبات طبیعی و شیمی دارویی و همچنین صنعت اهمیت بسیاری دارند. روش کلی برای تهیه مشتق های بنزازول، واکنش تراکمی حلقوی شدن، آمینوفنول، 2-آمینوتیوفنول و 1، 2-دی آمینوبنزن با کربوکسیلیک اسیدها یا مشتق های آنها تحت شرایط سخت می باشد. اغلب بنزازول ها طی واکنش حلقوی شدن اکسایشی، از آمیدها یا تیوآمیدها توسط واکنشگرها و شرایط مختلف تهیه می شوند. بیشتر واکنش ها دارای معایبی نظی...
We report the interfacial properties of a new fluorocarbon-hydrocarbon hybrid surfactant [OH(CH2)11N(C2H4)2(CH2)2(CF2)5CF3 I, or FHUB], which has a fluorocarbon chain as well as a w-hydroxyalkyl chain. This new hybrid surfactant has properties that are different than classical hydrocarbonand fluorocarboncontaining surfactants. This difference is created by combining a fluorocarbon chain and the...
Um sensor de monohidrogenofosfato (MHP) altamente seletivo e sensível foi obtido, através da preparação de uma membrana de PVC, contendo oxo-molibdênio com ligantes derivados do salen (MS) como carregador neutro, brometo de hexadeciltrimetil amônio (HTAB) como aditivo catiônico e benzilacetato (BA) como solvente plastificante mediador. A membrana sensora exibe uma resposta linear no intervalo d...
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