Magnetic ionic liquids, methods of making and uses thereof as solvents in the extraction and preservation of nucleic acids
申请人:The University of Toledo
公开号:US10752648B2
公开(公告)日:2020-08-25
Described herein are methods for making and using magnetic ionic liquid that have at least one cationic component and at least one anionic component, where at least one of the cationic components or the anionic components is a paramagnetic component. The magnetic ionic liquids are capable of manipulation by an external magnetic field.
Au(i)-benzimidazole/imidazole complexes. Liquid crystals and nanomaterials
作者:S. J. Hsu、K. M. Hsu、Max K. Leong、Ivan J. B. Lin
DOI:10.1039/b717787a
日期:——
Three series of Au(I)-imidazole complexes with stoichiometries of [Au(Cn-bim)Cl], [Au(Cn-im)Cl], and [Au(Cn-im)2][NO3]·2H2O (Cn-bim = N–CnH2n+1-substituted benzimidazole and Cn-im = N–CnH2n+1-substituted imidazole) together with the compound of [Au(C18-bim)2][NO3] are synthesiszed. Typical structures of each series are determined by single crystal X-ray diffraction. The last series of compounds, are liquid crystals, and exhibit a wider mesophase range than their Ag(I) analogues. These Au(I) complexes form Au nanostructures both through chemical reduction or thermolysis. For the first time, N-long chain imidazole is utilized to stabilize colloidal Au in solution. Also for the first time, unique examples of simple thermolysis to produce large Au plates of nanothickness are demonstrated. Formation of a plate-like morphology through fusion of sphere-like nanoparticles at an early stage is evidenced by TEM images.
Synthetic Strategies for Tailoring the Physicochemical and Magnetic Properties of Hydrophobic Magnetic Ionic Liquids
作者:Omprakash Nacham、Kevin D. Clark、Honglian Yu、Jared L. Anderson
DOI:10.1021/cm504202v
日期:2015.2.10
Magnetic ionic liquids (MILs) are a subclass of ionic liquids (ILs) containing paramagnetic components and are readily manipulated by an external magnetic field. Due to their hydrophilic nature, very few applications of MILs in aqueous systems have been reported. In this study, three general classes of hydrophobic MILs including monocationic, symmetrical/unsymmetrical dicationic, and symmetrical/unsymmetrical tricationic MILs were synthesized and characterized. By tuning the structure of the MIL, various physicochemical properties including water solubility, magnetic susceptibility, and melting point were regulated. MILs synthesized with the benzimidazolium cation were shown to exhibit lower water solubility (0.1% (w/v)) when compared to those containing imidazolium cations (0.25% (w/v)). By incorporating asymmetry into the cationic component of the MIL, the melting point of dicationic MILs was lowered while the effective magnetic moment (mu eff) and hydrophobicity remained unchanged. Tricationic MILs paired with three [FeCl3Br ] anions exhibited an mu eff as high as 11.76 Bohr magnetons (mu B), the highest ever reported for MILs. The synthetic strategies employed in this study facilitate the generation of hydrophobic MILs that show great promise for liquidliquid extraction and catalytic studies where the MIL can be easily removed or in microfluidic applications where the MIL microdroplet can be manipulated by an external field.
Tanaka; Kato, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1943, vol. 63, p. 593
作者:Tanaka、Kato
DOI:——
日期:——
N-alkylierte quartäre stickstoffhaltige Heterozyklen, Verfahren zu deren Herstellung und deren Verwendung in Arzneimitteln
申请人:MEDICE
Chem.-Pharm. Fabrik
Pütter GmbH & Co. KG