The lithium-7 NMR spectroscopic results for the complexation of lithium ion with the crown ether dibenzo-14-crown-4 (DB14C4) and its methyl (Me-DB14C4), tert-butyl (t-Bu-DB14C4), and di-tert-butyl (t-Bu2-DB14C4) derivatives in acetonitrile (ACN), propylene carbonate (PC), acetone...
Crown ethers containing polymer membranes are considered as one of the most promising candidates for selective separation of Li+. Herein, a novel dibenzo- 14-crown-4 ether-based polyimide (Poly(DAB14C4-6FDA)) was synthesized by condensation polymerization between di(aminobenzo)-14-crown-4 (DAB14...
2) cis(trans)-4,4'-bis(4-hydroxy-phenylazo)dibenzo-14-crown-4 顺(反)式-4,4'-双(4-羟基苯基偶氮)二苯并-14-冠-43) cis-4,4'-Bis(4-hydroxyphenylazo) dibenzo-18-crown-6 顺式-4,4'-双(4-羟基苯基偶氮)二苯并-18-冠-6