New Membranes Materials for Air Separation: Main Chain Coordination Polymers of Schiff-base/Co(II) Oxygen Carriers

该项目研究了用于膜的新型聚合物的合成和表征，这些膜具有改进的从空气中分离氧气的特性。合成了主链席夫碱/Co(II)配位聚合物和共聚物。对聚合物进行改性，以提高其对氧络合的长期稳定性。目的是研究聚合物结构与氧键参数之间的关系。研究了由这些聚合物形成的膜对O2和N2的透过性。用紫外-可见分光光度法鉴定氧的络合物。用脉冲激光闪光光解测定络合速率常数。这一结果将对合成用于膜气体分离的新型聚合物材料以及可能的其他应用产生影响。

The project examines the synthesis and characterization of new polymers to be used for membranes with improved characteristics for oxygen separation from air. Polymers and copolymers are synthesized with main-chain Schiff-base/Co(II) coordination. The polymers are modified to improve their long-term stability to oxygen complexation. the objectives are to study the relation between polymer structure and oxygen binding parameters. Membranes formed from these polymers are studied with respect to their permeability to O2 and N2. UV- Visible spectrophotometry is used to identify complexes with oxygen. Pulsed-laser flash photolysis is used to determine complexation rate constants. The results should have an impact on synthesizing novel polymeric materials for membrane- gas-separations and possibly other applications.