Binding Behaviors of <i>p</i>-Sulfonatocalix[4]arene with Gemini Guests
作者:Hong-Xia Zhao、Dong-Sheng Guo、Yu Liu
DOI:10.1021/jp312744d
日期:2013.2.14
terminal groups, were synthesized as candidate gemini guests for the complexation of p-sulfonatocalix[4]arenes (SC4A). The 12 gemini guests are divided into five species according to the different terminal groups: imidazolium (G1–G3), pyridinium (G4–G6), quinolinium (G7), viologen (G8–G11), and 1,4-diazabicyclo[2.2.2]octane (DBO, G12). Their bindingstructures and stoichiometries with SC4A were examined by
Ionic liquid type crown ether derivatives, method for preparing the same and method for isolating metal ions using the same
申请人:Park Hyun Sang
公开号:US20070173640A1
公开(公告)日:2007-07-26
Disclosed relates to an ionic liquid type crown ether derivative, expressed by Chemical Formula 1 below, for isolating metal ions, a method for preparing the same and a method for isolating selectively the metal ions using the cycle size of the same. The present invention can provide the ionic liquid type crown ether and isolate metal ions including radioactive isotopes efficiently using the same. Furthermore, the prevent invention provides crown ether valuably used as a recyclable and environment-friendly isolating medium by preparing crown ether of ionic liquid type.
wherein m, n, X
−
and R are identical with those in the description.
Synthesis and characterization of cyclophane: The highly selective recognition of Fe3+ in aqueous solution and H2PO4− in acetonitrile solution
作者:Ji Zhou、Yao-Feng Yuan、Ji-Bin Zhuo、Cai-Xia Lin
DOI:10.1016/j.tetlet.2018.02.005
日期:2018.3
towards Fe3+ in aqueous solution (H2O/CH3CN = 49:1, v/v) and H2PO4− in acetonitrilesolution with notable color change under UV light, evident changes were also noticed in fluorescence spectra. In fluorescence emission, the obvious turn-off was induced by Fe3+ in aqueous solution and the obvious turn-on as well as bathochromic-shift was induced by H2PO4− in acetonitrilesolution.
在这项工作中,我们报告了一系列基于a啶与咪唑鎓通过醚键结合的环烷荧光传感器。X射线晶体结构证明了在氢键和π-π相互作用的驱动下,这些环烷在固态下的自组装行为。传感器显示出朝向铁优异的选择性3+水溶液(H 2 O / CH 3 CN = 49:1,V / V)和H 2 PO 4 -乙腈与在UV光下显着的颜色变化的解决方案,明显变化也注意到在荧光光谱中。在荧光发射中,水溶液中的Fe 3+引起明显的熄灭,而H引起明显的点亮和红移。2 PO 4 -的乙腈溶液。
Reusable chiral salen Mn(III) complexes with phase transfer capability efficiently catalyze the asymmetric epoxidation of unfunctionalized olefins with NaClO
series of chiral salen Mn(III) polymers with build-in phase transfer capability was prepared by bridging the chiral salen Mn(III) units with polyethylene glycol (PEG)-based di-imidazolium ionic liquid (IL) side by side. Technologies of characterization suggested the alternation of intact chiral salen Mn(III) unit with PEG-based dicationic imidazolium IL moiety in the rigid one-dimension polymers. Amphipathic
Convenient and Efficient Synthesis for a Series of Ether Bis-Imidazoles and Their Derivatives
作者:Cheng-He Zhou、Xiao-Rong Gu、Ru-Gang Xie、Meng-Shen Cai
DOI:10.1080/00397919908086093
日期:1999.4
Abstract A simple, convenient and efficient synthesis for a series of ether bisimidazoles and their derivatives from oligo-ethyleneglycols, imidazole, 2-methylimidazole, and benzimidazole is reported. All these compounds obtained were characterized by MS, 'HNMR and elemental analysis.