Liquid chromatography and characterization of ether-functionalized imidazolium ionic liquids on mixed-mode reversed-phase/cation exchange stationary phase
摘要:
摘要 制备了一种新的咪唑阳离子基离子液体(ILs)系列[CnOmmim]Cl,其烷基侧链上带有一个醚官能团。研究人员采用混合模式反相/阳离子交换固定相,以水-乙腈为流动相,研究了用高效液相色谱法(HPLC)分析离子液体的可能性。研究了保留因子、选择性和柱效等洗脱参数与流动相组成和 pH 值的函数关系。通过元素分析、红外光谱、紫外光谱和 1H、13C NMR 光谱对 ILs 进行了表征。
Preparation of Functionalized Imidazolium Salts under Microwave Irradiation
作者:Shih‐Kang Fu、Shiuh‐Tzung Liu
DOI:10.1080/00397910600634464
日期:2006.6
Abstract A direct alkylation of a substituted imidazole to prepare the corresponding functionalized ionic liquid has been developed in excellent yields undermicrowaveirradiation.
A first truly all-solid state organic electrochromic device based on polymeric ionic liquids
作者:Alexander S. Shaplov、Denis O. Ponkratov、Pierre-Henri Aubert、Elena I. Lozinskaya、Cédric Plesse、Frédéric Vidal、Yakov S. Vygodskii
DOI:10.1039/c3cc49876j
日期:——
Using polymeric ionic liquids and PEDOT as ion conducting separators and electrodes, respectively, an all-polymer-based organicelectrochromicdevice (ECD) has been constructed. The advantages of such an ECD are: fast switching time (3 s), high coloration efficiency (390 cm(2) C(-1) at 620 nm), optical contrast up to DeltaT = 22% and the possibility of working under vacuum.
Truly solid state electrochromic devices constructed from polymeric ionic liquids as solid electrolytes and electrodes formulated by vapor phase polymerization of 3,4-ethylenedioxythiophene
作者:Alexander S. Shaplov、Denis O. Ponkratov、Pierre-Henri Aubert、Elena I. Lozinskaya、Cédric Plesse、Ali Maziz、Petr S. Vlasov、Frédéric Vidal、Yakov S. Vygodskii
DOI:10.1016/j.polymer.2014.04.013
日期:2014.8
Using polymeric ionic liquids, namely poly[1-(2-(2-(2-(methacryloyloxy)ethoxy)ethoxy)ethyl)-3-methylimidazolium]bis(trifluoromethylsulfonyl)imide or tetracyanoborate, and poly(3,4-ethylenedioxythiophene) (PEDOT) as an ion conductor and electrodes, respectively, the all-polymer-based thin-film symmetrical electrochromic devices (ECDs) have been constructed and tested. The proposed architecture serves as a prove of concept that polymeric ionic liquids (PILs) can be themselves used as solid electrolytes thus avoiding any electrolyte leakage since the ionic liquid species are grafted on the polymer backbone. Three different methods for the synthesis of PEDOT electrode films, including two new approaches consisted in vapor phase polymerization of 3,4-ethylenedioxythiophene (EDOT) in the presence of ionic monomer and poly(ethylene glycol)(di)methacrylates, have been investigated. Two oxidants, Fe[(CF3SO2)(2)N](3) and Fe[(CN)(4)B](3), bearing the same anions as PILs were prepared for the first time and utilized in the vapor phase polymerization of EDOT. It was found that the more compact structure and the highest conductivity are achieved for PEDOT electrodes prepared by vapor phase polymerization of EDOT in the presence of ionic monomer and poly(ethylene glycol)(di)methacrylates, followed by radical polymerization of the latters. The simplicity of ECDs assembly, their fast switching times (3-5 s), high coloration efficiency (up to 430 cm(2)/C), satisfactory optical contrast (up to 28.5%), absence of any liquids and good performance in air and in vacuum were found among the advantages of the proposed technology. (C) 2014 Elsevier Ltd. All rights reserved.
STABILIZATION OF METABOLICALLY-ACTIVE CELLS IN A BLOOD SAMPLE AT AMBIENT TEMPERATURES