乙醇铜溶胶凝胶过程的结构变化

STUDY ON THE CHANGE OF STRUCTURE IN THE SOL-GEL PROCESS OF COPPER ETHOXIDE

利用ＥＳＲ，ＩＲ及可见光谱等测试手段．研究了不溶于醇的乙醇铜［Ｃｕ（ＯＥｔ）２］在醋酸（ＨＯＡｃ）作为络合剂．乙二醇甲醚（ＨＯＲ１）作为介质的条件下．溶液的溶胶凝胶过程中铜配位结构的变化．结果表明，乙醇铜的溶解是由于双核电子耦合铜产物的形成．其水解过程涉及到双核铜产物结构的转变．而凝胶的形成是水解产物通过脱水羟联形成．因而其凝胶在大气中室温下是稳定的．

The structural changes of Cu complex species in the sol-gel process of modified Cu ethoxide with acetic acid have been studied by determination of ESR. IR and visible spectra. It is demonstrated that dissolution of Cu ethoxide in methoxyethanol is ascribed to formation of Cu binuclear species, the hydrolysis process is involved in structural change of the Cu binuclear species, and the formation of gel is due to polycondensation of hydrolyzed species through olation. Hence.the resulting gels are rather stable in ambient atmosphere.