174845-77-3Relevant academic research and scientific papers
Molecular Swings as Highly Active Ion Transporters
Ren, Changliang,Chen, Feng,Ye, Ruijuan,Ong, Yong Siang,Lu, Hongfang,Lee, Su Seong,Ying, Jackie Y.,Zeng, Huaqiang
, p. 8034 - 8038 (2019)
Ions are transported across membrane mostly via carrier or channel mechanisms. Herein, a unique class of molecular-machine-inspired membrane transporters, termed molecular swings is reported that utilize a previously unexplored swing mechanism for promoting ion transport in a highly efficient manner. In particular, the molecular swing, which carries a 15-crown-5 unit as the ion-binding and transporting unit, exhibits extremely high ion-transport activities with EC50 values of 46 nm (a channel:lipid molar ratio of 1:4800 or 0.021 mol % relative to lipid) and 110 nm for K+ and Na+ ions, respectively. Remarkably, such ion transport activities remain high in a cholesterol-rich environment, with EC50 values of 130 (0.045 mol % relative to lipid/cholesterol) and 326 nm for K+ and Na+ ions, respectively.
Anchoring a Sulfonate Group to an Electron-Transporting Molecule by an Alkyl Chain and Its Use as the Counter Anion in a Phosphorescent Cationic Iridium Complex
Wang, Pei,Luo, Ningzi,Song, Xiangzhi,He, Lei
, p. 246 - 253 (2018)
An electron-transporting anion prepared by anchoring a sulfonate group onto an electron-transporting molecule through a flexible alkyl chain and its use as the counter anion in a cationic iridium complex is reported. The flexible alkyl chain improves the solubility of the bulky anion in water or in polar organic solvents. The anion exhibits similar photophysical and electrochemical properties to the parent electron-transporting molecule. Within the complex, the anion does not disturb the phosphorescence of the cation in the solid film. Solution-processed small-molecule organic light-emitting diodes (OLEDs) using the complex as the dopant show superior performances over the reference device using the conventional complex with a PF6 ? counter anion. It is revealed that anchoring anionic groups to optoelectronically active molecules with flexible alkyl chains is a feasible approach to develop optoelectronically active anions for assembling ion pairs with advanced optoelectronic properties.
Adsorption isotherms and kinetic studies for the removal of toxic reactive dyestuffs from contaminated water using a viologen-based covalent polymer
E. Abdel Mageid, Randa,El Malah, Tamer,Khattab, Tawfik A.,Nour, Hany F.,Olson, Mark A.,Radwan, Emad K.
supporting information, p. 18983 - 18993 (2021/10/26)
A polyviologen-based adsorbent was preparedviapolymerization of a viologen-dialdehyde with a hydroxyl-substituted aryl-dihydrazide in acidified water. The viologen-based covalent polymer aerogel was then generated by freeze-drying. The adsorption of React
A highly selective colorimetric sensor for Cu2+ based on phenolic group biscarbonyl hydrazone
Li, Junjian,Guo, Ying,Yao, Hong,Lin, Qi,Xie, Yongqiang,Wei, Taibao,Zhang, Youming
, p. 271 - 276 (2013/08/24)
A novel copper selective sensor 2 based on hydrazide and salicylaldehyde has been designed and prepared. Sensor 2 behaves a single selectivity and sensitivity in the recognition for Cu2+ over other metal ions such as Fe3+, Hg2+, Ag+, Ca2+, Zn 2+, Pb2+, Cd2+, Ni2+, Co 2+, Cr3+ and Mg2+in DMSO. The distinct color change and the rapid changement of fluorescence emission provide naked-eyes detection for Cu2+. The UV-vis data indicate that 1:2 stoichiometry complex is formed by sensor 2 and Cu2+. The association constant Ks was 3.51×104 mol-1·L. The detection limitation of Cu2+with the sensor 2 was 2.2×10 -7 mol·L-1. The sensing of Cu2+ by this sensor was found to be reversible, with the Cu2+-induced color being lost upon addition of EDTA. Copyright
