论文部分内容阅读
Sodium or quaternary ammonium modified Nafion membranes in forms of Nafion-Na+,Nafion-NMe4+,Nafion-NEt4+ and Nafion-NBu4+ have been prepared by neutralizing Nafion-H+ membrane with NaOH or tetraalkylammonium hydroxide aqueous solution.Intramolecular excimer formation and fluorescence polarization methods using l,3-di(1-pyrenyl)propane and acridine orange as probes respectively have been employed for measurements of the microviscosity within those modified Nafion membranes.Results show that the probes are located in the fluorocarbon/water interface in the cluster of the membranes and the microviscosities around the probe molecules are in the range of ca.120-1200 cp and increase in the order of Nafion-Na+
其他文献
A straight synthesis of 2-(a-substituted N-tosylaminomethyl)-2,5-dihydrofurans by thereaction of N-s
On treatment of N-tosylimines (1) and 4-hydroxyl-cis-butenyl arsonium salt (5) with KOH in acetonitrile at room temperature, 2-(a-substituted N-tosylaminomethy
在中国,iPhone和iPad已成高端时尚品的代名词,被果粉们疯狂追逐。最新的iPhone6因为价格昂贵,甚至被网友们戏称为“肾6”。然而,iPhone手机先进便捷的“云同步”功能,却暗藏
名作名译、文话文心。这套丛书自推出以来,以经典的内容、别致的设计带给读者颇多阅读的趣味。纪念版甄选十种,以此重温,以此开来。六人:六条人生路[德]鲁多夫·洛克尔著巴金
在3月至4月的任何一天里,位于日本宫崎市新富町的一个美丽的丛生福禄考花园都会引来七千多人参观。吸引这些游人的不仅是花园里的美景,还有这美景背后的动人故事。日本宫崎市
Twenty 10-hydrocarbylacridones and 2-methylacridone, 1-hydroxyacridone were synthesized from acridone and characterized by mp, IR, UV, 1H NMR and MS. Using Nd:
一天，村子里来了一个马戏团，想请三个孩子给他们帮忙，条件是这样的：干一个小时，让孩子们白看马戏，但是没有座位；干三个小时，让孩子们坐在后排看；干五个小时，让他们坐在前排中间看。为了能好好地看一场马戏，孩子们干了五个小时，开心地坐到了前排中央，可是，他们忍不住困乏，在节目刚开始的时候就睡着了。 这是一则材料，老师要求根据这则材料写作文。儿子告诉我：“这次作文很多同学的审题都出错了，很多同学写的都是
EXAFS and FTIR structural characterization for the crystal of monomeric tetraphenylporphyrinato gado
The coordination number of the gadolinium atom and bond distances in the crystal of inonomeric porphyrinate,[Gd(TPP)acac-8H2O 3TCB] (TCB: 1,2,4-trichlorobenzen
引言维筒形转包具有结构简单可靠、倾转方便易于控制浇注速度、清渣修砌方便等优点,故目前在铸造生产中被广泛应用。但锥筒转包在设计计算中尚有些理论问题还未完善解决。例
下课铃准时响起，语文老师照例布置了课后作业。当听到“背诵并默写全文”时，我和周围的同学不约而同地抱怨了几句。虽然浮夸的演技不能让老师收回成命，可这是我们用来表达不情愿的方式之一。和许多同学一样，背诵古文总让我头痛，要把那些还没能完全理解的生涩句子一字不差地默写下来，我必须多花几个小时。 正巧周末，我和父母一起去探望外公。一进外公家我就看到熟悉的八仙桌上摆着毛笔架和砚台。我这才知道，退休后的外公又