硝基化合物的吸附伏安法研究 I: 5-硝基-1, 10-邻菲咯啉的吸附伏安特性

本文用线性扫描技术对氨性溶液中, 低浓度, 5-硝基-1,10-邻菲咯啉的吸附伏安特性进行了研究.     

[（n—C4H9）4N][EuxM1—x（TTA）4]（M=La、Sm、Gd、Tb）的光致发光

合成了一类组成为[(n-C4H9)4N][EuxM1-x(TTA)4](M=La、Sm、Gd、Tb）的固体配合物，通过测定其红外光谱，X射线粉末衍射谱和荧光光谱，研究了配合物结构和发光性质随Eu^3 浓度变化的规律。红外光谱和XRD谱的分析结果表明，在体系中没有新化合物生成，而荧光光谱分析结果表明发光强度与Eu^3 浓度不成线性关系，不发光的基质配合物组分对发光有不同大小和不同类型的影响，提出一种可能的发光机制解释这一共发光现象。     

Poly（meta-phenylene） Derivative with Rigid Twisted Biphenyl Units in Backbone： Synthesis, Structural Characterization, Photophysical Properties and Electroluminescence

A soluble poly(meta-phenylene)derivative with rigid twisted biphenyl unit was synthesized by the Yamamoto coupling reaction.The polymer is soluble in common organic solvents,and the number-average molecular weight is about 6500.The UV-Vis and quantum chemical calculation indicate that the different conformation segments named "conformers" exist in the polymer backbones;it was also further confirmed by the single crystal X-ray diffraction study of the dimeric model compound.The π-π transition of biphenyl segments of twisted and planar conformations made the polymer exhibit a strong absorption around 256 nm and a weak absorption at about 300 nm.Furthermore,the polymer exhibits a strong UV photoluminescence at 372 nm when the excitation wavelengths are longer than 300 nm.The ultraviolet-emitting electroluminescence(EL)device with the single layer structure shows EL λmax of the derivative at 370 nm.     

Molecular Simulation on Transport Properties of Confined Water

The diffusivity and viscosity of water confined in micropores were studied by molecular dynamics simulations. The effects of pore width and density were analyzed at pore widths from 0.9 to 2.6nm. The diffusivity in micropores is lower than that of the bulk, and it decreases as pore width decreases and as density increases. But the viscosity in micropores is much larger than that of the bulk, and it increases as pore width decreases and as density increases. The diffusivity in channel parallel direction is obviously larger than that in channel perpendicular directions.     

一种微流控芯片中大体积进样方法及专用芯片

本发明涉及微流控芯片系统的进样方法。在使用固定相的微流控芯片系统中,于芯片分离通道与流动相人口之间设置两个或两个以上的分流通道。通过控制其中流体的切换和截止,实现对微流控芯片系统的大体积进样。该方法适合于微流控芯片中电色谱、加压电色谱和液相色谱模式下的大体积进样。该方法的优点为：可实现微流控芯片中大体积样品的上样;克服了系统中的梯度延迟效应,     

丙烯腈-衣康酸共聚物稀溶液的粘度行为

采用乌氏粘度计研究了丙烯腈-衣康酸共聚物稀溶液的粘度行为,探讨了羧基含量对聚丙烯腈稀溶液偏离Huggins方程的异常行为的影响.结果表明:随着羧基含量增加,溶液粘度偏离Huggins方程越严重,要准确测定聚丙烯腈树脂的分子量,必需适当提高其溶液浓度,避开偏离区域.     

玉米支链淀粉在单糖、寡糖水溶液中的粘度行为

通过乌氏粘度计和数字流变仪研究了玉米支链淀粉在单糖和寡糖溶液中的特性粘度和表观粘度.发现在稀溶液中,玉米支链淀粉的特性粘度随糖浓度的增加而降低;浓溶液中,玉米支链淀粉的糖溶液的表观粘度随糖浓度的增加而升高.小分子糖对支链淀粉在糖溶液中的特性粘度和表观粘度的影响由强到弱依次为蔗糖>麦芽糖>葡萄糖>半乳糖>果糖.     

磺酸基锰钛菁基于荧光猝灭对痕量NO2^-离子含量的测定

酞菁化合物是一类非常重要的有机染料,它不仅在可见区有强吸收,而且具有良好的光稳定性、热稳定性和化学稳定性,同时又具有易于合成、成本低廉等优点,越来越令世人瞩目.     

Sonochemical Preparation of Micro- and Nanometer Cu2O

Cu2O particles with different morphologies and scales were prepared sonochemically on the solid-liquid interface of CuCl and water, by adjusting the reaction factors. The products were characterized by powder X-ray diffraction（XRD） and scanning electron microscopy（SEM）. The formation and morphology of Cu2O crystals were influenced by high-intensity ultrasound, reaction temperature, and addition of CuCl. The results indicate that micrometer Cu2O was crystallized in cubic and octahedral shapes, whereas, nanometer Cu2O was not produced in well-shaped crystals.     

新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其配合物的合成、表征和电化学性能

合成了新型尾式5-(4-烟酸酰氧基己氧基)苯基-5,10,15-三苯基卟啉及其Mn, Fe, Co, Ni, Cu, Zn配合物, 并用红外光谱、紫外-可见光谱、核磁共振氢谱、元素分析和质谱对化合物的结构进行了确认, 通过循环伏安法研究了化合物的电化学性质. 结果表明, 卟啉配体与其配合物的紫外光谱、红外光谱和核磁共振氢谱都有很大区别, 锰与铁配合物的循环伏安曲线和配体及镍、铜、锌的配合物不同, 除了卟啉环发生氧化还原反应外, 还发生了金属离子的氧化还原反应.