Hybrid Materials Prepared from Polymers and Self-assembled Systems by Physical Processes

1 Results A new type of hybrid materails prepared from ternary systems polymer/bicopper organic complex/solvent is presented.Each binary system displays differing types of behaviour: The polymer solutions produce thermoreversible gels while the bicopper organic complex (designated as CuS8) forms randomly-dispersed,self-assembling threads in organic solvents (See Fig.1(a),(b)).Fig.1 The CuS8 and ips thermoreversible gels Thermoreversible gels possess a fibrillar morphology with a typical mesh size ra...     

Magnetic Films on Self-assembled Nanospheres

1 Results Nanoparticle media using arrays of monodisperse nanoparticles with high magneticanisotropy are assumed to be the ideal future magnetic recording media. However,key requirements like control of the magnetic anisotropy orientation along with magnetic domain isolation have not been achieved so far. Here, we report on a combination of a two-dimensional topographic pattern formed of self-assembled nanoparticles with sizes as small as 20 nm and magnetic multilayer film deposition[1]. The so formed n...     

多巴胺在2-氨基-5-巯基-[1,3,4]三氮唑自组装膜电极上的电化学行为研究

利用新合成的巯基试剂2-氨基-5-巯基-[1，3,4]三氮唑在金电极表面进行了首次自组装，用电化学法和扫描电子显微镜对自组装膜电极进行了表征．研究了多巴胺在该自组装膜电极上的电化学行为，发现该自组装膜能有效促进多巴胺在电极与溶液之间的电子传递，表现为-二电子传递的准可逆行为，电极反应速率常数为0．1049cm／s．该自组装膜电极用于多巴胺注射液含量的测定，结果满意．     

Self-assembly of N-3-γ-pyridyl Aza[60]fulleroid on Au(111)

Self-assembled monolayers of novel C60 derivative, N-3-γ-pyridyl Aza[60]fulleroid (C60Py), on Au(111) were studied by a scanning tunneling microscope under ultrahigh vacuum (UHV). C60Py molecules were assembled on Au (111) via pyridyl nitrogen-Au interaction. The sole assembly of C60PY molecules on Au (III) only exhibited randoml aggregation of C60PY even the films were annealed at 50 and 105℃ .By co-assembling with benzyl mercaptan (BM), the C60PyBM films showed highly dense aggregation, but C60Py assemblies still had disordered structure. After the co-assembled C60Py-BM films were annealed at 50℃, BM molecules were partially desorbed, but the assembly of C60Py remained without obvious change. After the co-assembled C60Py-BM films were further annealed at 105℃, the C6oPy monolayers with ordered structure were obtained, while the BM molecules were nearly thoroughly desorbed from the surface. Here, the BM molecules play a key role as a surfactant in the formation of the ordered C6oPy monolayer.     

自组装巯基环肽单层膜修饰金电极电化学行为的研究

应用循环伏安及交流阻抗技术研究了巯基环肽自组装单层膜修饰金电极的电化学行为，证明了巯基环肽分子能够在金表面形成一定覆盖度的吸附层，同时考察了金/巯基环肽自组装单层膜电极在不同pH值的KCl溶液中的电化学行为。为深入研究巯基环肽的膜结构及性质打下了必要的基础。     

咔唑和硫醇混合自组装缓蚀功能膜的电化学研究

在金属铜表面上制备了各种类型的咔唑和硫醇的混合自组装膜，用电化学交流阻抗和极化曲线研究了自组装膜的致密程度以及缓蚀性能，并考察了乙烯基咔唑的吸附过程，初步探讨了混合膜的形成机理。     

3-巯丙基三甲氧基硅烷自组装膜的制备及其摩擦学性能

采用分子自组装技术在羟基化的玻璃基片表面制备了3-巯丙基三甲氧基硅烷单层膜(MPTS-SAM),运用原子力显微镜(AFM)观察了薄膜的表面形貌,使用X射线光电子能谱仪(XPS)分析了薄膜表面典型元素的化学状态,并运用静-动摩擦系数测定仪评价了薄膜的摩擦磨损性能.研究结果表明:在组装初期,硅烷水解产物主要是与基体表面的羟基发生聚合反应,表面出现岛状物;随着组装时间的增加,基体表面的有机硅烷分子之间发生聚合反应,当组装90min后,可以在基体表面形成完整的自组装薄膜.当组装MPTE-SAM后,基片表面的摩擦系数由无膜时的0.85降到了0.19,说明MPTE-SAM可以降低基片的摩擦系数,并且在较低载荷下具有较好的耐磨性能.     

对3种不同硫化物自组膜免疫传感器的比较研究

在半胱氨酸自组膜上固定抗体（羊抗小鼠IgG）制备免疫传感器，分别与巯基十一酸自组膜和32-巯基-3，6，9，12，15，18，21-七氧杂三十二烷酸（EG6COOH）自组膜免疫传感器比较其性能。结果发现通过半胱氨酸自组膜制备的免疫传感器具有最好的灵敏度。能够在13min内。0．05～5．4μg／L范围对游离IgG灵敏检测，检测下限为0．05μg／L。     

γ-巯基丙基三甲氧基硅烷自组装膜的制备及其防腐蚀性能

采用自组装的方法在铜片表面制备了γ-巯基丙基三甲氧基硅烷的单分子膜,并利用金相显微镜及粗糙度测定仪观察自组装分子膜的表面形貌,利用电化学工作站评价了自组装分子膜对铜片的缓蚀性能。结果表明：自组装分子膜对铜片具有一定的修饰作用,修饰效果与时间呈正相关;γ-巯基丙基三甲氧基硅烷自组装膜对铜片具有一定的缓蚀性能,其缓蚀性能与...     

稀土改性碳纳米管复合薄膜制备及其摩擦磨损性能

利用自组装技术,在玻璃基片表面制备了稀土改性碳纳米管复合薄膜,采用接触角测量仪测量了不同成膜时间下水在薄膜表面的接触角,使用X射线光电子能谱仪分析了薄膜表面稀土元素的化学状态,并运用UMT 2MT型摩擦磨损试验机评价了薄膜的摩擦磨损性能.结果表明：稀土改性后的碳纳米管成功地组装到磷酸化后的氨基硅烷薄膜表面而形成碳纳米管复合薄膜;碳纳米管复合薄膜表现出优异的摩擦磨损性能,在给定试验条件下,玻璃基片表面的摩擦系数由0.70降至0.13左右, 并表现出了优异的耐磨性和摩擦稳定性.