有机-无机杂化分离膜研究进展

有机-无机杂化膜材料结合了有机膜材料和无机膜材料的优良性能,已成为分离膜材料研究的一个热点。本文以有机、无机组分间相互作用类型对其进行分类,着重介绍组分间以化学键相结合的有机-无机杂化膜的优良特性,总结了影响此类杂化膜结构和性能的主要因素,概括了它在膜分离中的应用,提出了目前研究工作中存在的不足,并做出了简要的述评。     

光固化环氧丙烯酸酯有机-无机杂化体系

二氧化硅杂化体系;溶胶-凝胶法;光固化环氧丙烯酸酯有机-无机杂化体系     

一种基于碘化铅的有机/无机杂化钙钛矿材料传输性能的研究

合成了一种新型的有机/无机杂化钙钛矿(NH3C6H4OC6H4NH3)PbI4, 采用元素分析、紫外-可见光吸收光谱、X射线衍射和透射电镜对其结构进行了表征, 结果表明这种材料具有规则的层状结构, 有序性高. 对这种材料的薄膜进行了伏安测试, 结果表明该材料属于n型半导体, 其电子迁移率达到0.065 cm2•V－1•s－1, 在光电器件领域有着潜在的应用前景.     

有机-无机杂化膜的研究进展

有机-无机杂化膜结合了传统有机膜与无机膜的优良性能,已成为膜领域的研究热点之一。本文综述了有机-无机杂化膜的研究现状,归纳了有机-无机杂化膜的分类、制备技术、应用及其优越性,并针对现存的问题及今后的研究发展提出了一些建议。     

溶胶-凝胶法制备有机/无机杂化材料工艺及其应用

介绍了溶胶–凝胶法制备有机/无机杂化材料的原理和基本过程,杂化材料的制备方法及对材料性能的影响,概述了杂化材料在结构材料、光学材料及其它材料中的应用研究。     

无机/有机杂化IPN的合成与表征

随着互穿聚合物网络(IPN)的发展,出现了无机/有机杂化IPN,调整两组分或多组分互穿程度控制材料的结构、形态与性能,可使材料具有较宽的适用范围.此类材料具有高模量、高韧性,易成型加工.     

有机/无机杂化钙钛矿(C14H13N2O2)2PbCl4的制备与表征

合成了一种新颖的有机/无机杂化钙钛矿(C14H13N2O2)2PbCl4材料,采用元素分析、红外光谱(FT-IR)、紫外可见吸收光谱(UV-Vis)、透射电镜(TEM)、电子衍射(ED)、紫外可见光声光谱(UV-Vis PAS)和表面光电压谱(SPS)等手段对其分子结构和聚集态、光学性质和光、电特性进行了表征。结果表明,这种材料具有较好的有序性,在紫外光波段同时具有较好的光电响应和光声特性。     

荧光无机/有机杂化纳米分子口袋的构建

利用能量匹配原则将无机半导体ZnO纳米粒子与有机半导体四苯基卟啉四羧酸(TCPP)分子进行组装, 在无机-有机组分之间的界面构建了杂化纳米分子口袋ZNPs-TCPP, 该纳米分子口袋对四苯基卟啉(TPP)分子具有高选择性识别功能, 同时其荧光增强了5倍以上, 并成功地将该杂化纳米分子口袋用于肺腺癌细胞(A549)的细胞成像.     

基于PbBr2的有机-无机杂化化合物的合成和晶体结构

合成得到了2个新的有机-无机杂化化合物{（4-CH₃-Bz-4-Ph-Py）[PbBr₃]}_n（1）（4-CH₃-Bz-4-Ph-Py⁺=4-甲基苄基-4-苯基吡啶离子）和{（4-F-Bz-4-Ph-Py）[PbBr₃]}_n（2）（4-F-Bz-4-Ph-Py⁺=4-氟苄基-4-苯基吡啶离子）。对化合物1和2进行了元素分析、粉末X射线衍射等表征,并利用X射线单晶衍射测定了它们的单晶结构,配合物1与2同构,均属于正交晶系,P2₁2₁2空间群。结构研究表明,配合物1和2中,铅溴八面体通过共边连接方式,形成[Pb₃Br₉]_n三链,有机阳离子填充在无机溴化铅链空隙中。配合物1和2均未作手性分离。     

基于PbBr2的有机-无机杂化化合物的合成和晶体结构

合成得到了2个新的有机-无机杂化化合物{（4-CH₃-Bz-4-Ph-Py）[PbBr₃]}_n（1）（4-CH₃-Bz-4-Ph-Py⁺=4-甲基苄基-4-苯基吡啶离子）和{（4-F-Bz-4-Ph-Py）[PbBr₃]}_n（2）（4-F-Bz-4-Ph-Py⁺=4-氟苄基-4-苯基吡啶离子）。对化合物1和2进行了元素分析、粉末X射线衍射等表征,并利用X射线单晶衍射测定了它们的单晶结构,配合物1与2同构,均属于正交晶系,P2₁2₁2空间群。结构研究表明,配合物1和2中,铅溴八面体通过共边连接方式,形成[Pb₃Br₉]_n三链,有机阳离子填充在无机溴化铅链空隙中。配合物1和2均未作手性分离。     

巯基硅溶胶对改性亚麻籽油紫外光固化反应活性的影响

用溶胶-凝胶法制备了新型的多功能巯基硅氧烷溶胶;用亚麻籽油和环戊二烯合成了可光聚合的改性亚麻籽油低聚物(NLO),并用红外光谱(FT-IR)表征了其结构。用光-差示扫描热分析(Photo-DSC)和在线红外(RT-IR)对NLO、巯基硅氧烷的紫外光固化体系的光聚合反应活性及可光聚合官能团的转化率进行了动力学研究。结果表明:巯基硅氧烷能大大提高NLO的自由基聚合速率,环烯键对硫醇十分敏感,巯基硅氧烷溶胶兼具光引发剂和交联剂的作用。     

聚苯胺对新型杂化透明导电薄膜制备和性能的影响

以聚苯胺和掺锑的氧化锡作为主要原料, 采用溶胶-凝胶法制备了新型有机-无机杂化透明导电薄膜. 薄膜的可见光透过率为85%以上, 电导率达到10⁰～10¹ S•cm^－1. 研究了聚苯胺含量的变化对浸涂液粘度、薄膜结构、光透过率、电导率的影响. 随着聚苯胺引入量的增加, 薄膜的电导率、可见光透过率均有所增大. 浸涂液的粘度可在长达25天的时间内保持稳定, 很适于浸涂工艺. 扫描电镜照片显示, 薄膜比较致密、均匀, 厚度为250 nm左右.     

Facile Synthesis of Free‐Standing Polymer Brush Films Based on a Colorless Polydopamine Thin Layer

A free‐standing polymer brush film with tailored thicknesses based on a colorless polydopamine (PDA) thin layer is prepared and characterized. The surface‐initiated atom transfer radical polymerization (ATRP) of 2‐hydroxyethyl methacrylate (HEMA) is performed on a PDA layer with thickness of ca. 6 nm, which generated an optically transparent and colorless free‐standing PHEMA brush film (1.5 cm × 1.5 cm). Because the cross‐linked PDA layer is used as the base for the polymer brushes, the reported method does not require cross‐linking the polymer brushes. The free‐standing film thicknesses of ≈16–75 nm are controlled by simply changing the ATRP reaction time. The results show that the free‐standing PHEMA brush film transferred onto a plate exhibits a relatively smooth surface and is stable in any solvent.

     

Preparation and Properties of Organic-Inorganic Hybrid Gel Films Based on Polyvinylpolysilsesquioxane Synthesized from Trimethoxy(vinyl)silane

Polyvinylpolysilsesquioxane (PVPS) organic-inorganic hybrid gel films containing polyethylene and siloxane backbone linkages were prepared through the radical polymerization of trimethoxy(vinyl)silane (VTS) followed by the acid-catalyzed hydrolytic polycondensation of trimethoxysilyl groups. The PVPS gel films were transparent and homogeneous. It was found that the mechanical properties of these films correlate both to the degrees of polymerization and to the extent of cross linking.     

Effects of Operating Conditions on the Copolymerization of Castor Oil Maleate–Styrene by Suspension Polymerization

This work studies the synthesis of copolymers (MACO‐St) of castor oil maleate (MACO) and styrene (St) initiated using benzoyl peroxide (BPO) as free radical initiator through suspension polymerization. The study investigates the effects of temperature (100–140 °C), the molar ratio between styrene and MACO (2:1–4:1), BPO concentration (0.10–0.20 wt%), and water concentration (50–100 wt%) on the molecular weight distribution, thermal stability, viscosity, and biodegradability of the copolymers. Suspension polymerization allows the production of a broad range of number average molecular weight (3465–18 995 g mol^?1) and molecular weight distributions with dispersions (?) ranging from 1.8 to 4.4. The reaction presents high yields of castor oil into copolymers (>90%), which displays thermal stability up to 200 °C and are highly biodegradable according to the International Organization of Standardization reference.     

In Situ Fabrication of Inorganic/Organic Hybrid Based on Cu/Co‐ZIF and Cu2O

We successfully fabricate a well‐defined inorganic/organic hybrid Cu₂O@Cu/Co‐ZIF (ZIF=zeolitic imidazolate frameworks) by use of growth of dual‐metal Cu/Co‐ZIF on the obtained Cu₂O hollow spheres. The key point of the strategy is coupling the in situ self‐sacrificing template. Cu₂O and the coordination of metal ions (Cu⁺ and Co²⁺) with 2‐methylimidazole. This new hybrid was characterized by powder X‐ray diffraction, (scanning) transmission electron microscopy, energy‐dispersive spectroscopy mapping, in situ FT‐IR spectroscopy, UV/Vis diffuse reflection spectroscopy, N₂ sorption measurements, and electron spin resonance. It was evidenced that Cu/Co‐ZIF nanocrystals have been assembled to continuous shells surrounding the Cu₂O cores as well as in the voids between layers and inner pores. Cu₂O@Cu/Co‐ZIF exhibits visible light responsiveness and holds potential as narrow band gap semiconductor and visible photocatalyst.     

Preparation and Conducting Behavior of Amphibious Organic/Inorganic Hybrid Proton Exchange Membranes Based on Benzyltetrazole

A series of novel amphibious organic/inorganic hybrid proton exchange membranes with H3PO4 doped which could be used under both wet and dry conditions was prepared through a sol-gel process based on ac...     

金属氯化物-苯并噻唑有机无机杂化化合物的合成、表征及荧光性质

金属卤化物MCl₂（M=Pb²⁺,Cd²⁺,Co²⁺）分别与苯并噻唑（btz）在浓盐酸中、80 ℃下反应,合成了3种有机无机杂化化合物：（btzH）[（PbCl₃）] （1）,（btzH）₂[CdCl₄]·2H₂O （2）和（btzH）₂[CoCl₄]·2H₂O （3）,其中化合物2和3结构相似。化合物1~3进行了粉末衍射、红外和紫外光谱、元素分析、热重分析以及X射线单晶衍射表征。荧光测试发现：化合物1~3在393 nm处有发射峰,该荧光来源于苯并噻唑环中电子的π…π跃迁。     

有机/无机复合介孔膜的合成及其生物酶吸附行为研究

以正硅酸四乙酯(TEOS)为硅源、三嵌段共聚物(F127)为表面活性剂, 聚碳酸酯膜为硬模板, 并采用抽滤法在聚碳酸酯膜内的亚微米级孔道中组装介孔氧化硅从而制备出有机(聚碳酸酯)/无机(介孔氧化硅)复合介孔膜. 通过扫描电镜、能量分散光谱以及透射电镜等实验表征了该有机/无机复合介孔膜的组成、结构及形貌. 研究结果表明: 通过该方法可以在聚碳酸酯膜内孔道中形成长度为9 μm、直径为200 nm的一维氧化硅棒状材料, 且该棒状材料具有无序蠕虫状和有序体心立方的混合介孔结构, 有序体心立方介孔的平均孔径约为8.5 nm. 另外, 初步考察了该复合介孔膜对生物酶的物理吸附行为, 结果表明其对肌红蛋白酶的单位吸附负载量为5.85 mg/g.