以无机盐为原料,用溶胶-凝胶技术在S i(111)衬底上制备(100)取向M gO薄膜。镁硝酸盐的冰醋酸溶液加热回流转化形成的M g(CH3COO)2,与乙酰丙酮(A cA c)分子形成环状螯合物M g(CH3COO)2-x(A cA c)x可抑制M g2+离子的过度水解,经水解形成的...以无机盐为原料,用溶胶-凝胶技术在S i(111)衬底上制备(100)取向M gO薄膜。镁硝酸盐的冰醋酸溶液加热回流转化形成的M g(CH3COO)2,与乙酰丙酮(A cA c)分子形成环状螯合物M g(CH3COO)2-x(A cA c)x可抑制M g2+离子的过度水解,经水解形成的M g(OH)2-x(A cA c)x羟基聚合形成镁的羟基簇状结构溶胶。丙三醇(GL)防止羟基镁过度聚合,聚乙烯醇(PVA)分子中强极性基团-OH和金属离子螯合或化学吸附,使镁的羟基簇状结构溶胶具有线状或网状结构,易于成膜。有机添加剂也会使M gO薄膜在热处理过程的热应力因薄膜塑性增强而降低。文中对形成的M gO薄膜的微结构、形貌等进行了分析,通过M gO薄膜二次电子发射系数γ值的测定,反馈M gO薄膜的性能,为提高PDP(p lasm a d isp lay panels)性能提供依据。展开更多
Four alkoxo complexes [Cp 2Mo(PMe 3)OR] +OTs -(R=Me, Et, Pr n , Pr i ) were synthesized and characterized by IR, 1H NMR and elemental analysis. The β hydrogen elimination of these complexes in dimethyl sulfoxide gave...Four alkoxo complexes [Cp 2Mo(PMe 3)OR] +OTs -(R=Me, Et, Pr n , Pr i ) were synthesized and characterized by IR, 1H NMR and elemental analysis. The β hydrogen elimination of these complexes in dimethyl sulfoxide gave monohydrido complex [Cp 2Mo(PMe 3)H] +OTs - and a ketone or aldehyde.展开更多
文摘以无机盐为原料,用溶胶-凝胶技术在S i(111)衬底上制备(100)取向M gO薄膜。镁硝酸盐的冰醋酸溶液加热回流转化形成的M g(CH3COO)2,与乙酰丙酮(A cA c)分子形成环状螯合物M g(CH3COO)2-x(A cA c)x可抑制M g2+离子的过度水解,经水解形成的M g(OH)2-x(A cA c)x羟基聚合形成镁的羟基簇状结构溶胶。丙三醇(GL)防止羟基镁过度聚合,聚乙烯醇(PVA)分子中强极性基团-OH和金属离子螯合或化学吸附,使镁的羟基簇状结构溶胶具有线状或网状结构,易于成膜。有机添加剂也会使M gO薄膜在热处理过程的热应力因薄膜塑性增强而降低。文中对形成的M gO薄膜的微结构、形貌等进行了分析,通过M gO薄膜二次电子发射系数γ值的测定,反馈M gO薄膜的性能,为提高PDP(p lasm a d isp lay panels)性能提供依据。
文摘Four alkoxo complexes [Cp 2Mo(PMe 3)OR] +OTs -(R=Me, Et, Pr n , Pr i ) were synthesized and characterized by IR, 1H NMR and elemental analysis. The β hydrogen elimination of these complexes in dimethyl sulfoxide gave monohydrido complex [Cp 2Mo(PMe 3)H] +OTs - and a ketone or aldehyde.
