从向日葵籽壳中提取色素

本文叙述了从向日葵壳中提取色素的方法及工艺条件选择.     

碱式磷酸钾锌无毒防锈颜料的研究

本实验合成了以一般化学式ZnO·LK_2O·mP_2O_5·nH_2O表示的一系列碱式酸钾锌,研究了它们的防锈性能.浸盐水实验证实,当l、m、n在一定范围时,所得产物磷都有不同程度的防锈性能,其中尤以编号为24和210的防锈性能最佳.由x-ray相分析、DTA-TG及电子显微镜照相证实,210颜料是由大量ZnO、部分Zn_3(PO_4)_2·2H_2O及微量未被JCPDS承认的含钾磷酸盐组成.由于该未知的活性物包覆在ZnO、Zn_3(PO_4)_2·2H_2O表面,形成包核颜料,故210颜料有优于ZnO及Zn_3(PO_4)_2·2H_2O的防锈性能.     

碱溶酸沉法提取黑米天然色素的研究

提出了碱溶酸沉法提取黑米天然色素的新方法，精选去杂的黑米经脱脂后，以水、醇混合液作溶剂，以硼砂－－氢氧化钠体系作碱性缓冲液（ＰＨ９．０－９．５）进行提取，用邻苯二甲酸氢钾－－盐酸组成的酸性缓冲液（ＰＨ３－４）酸化提取液，经浓缩沉淀而得到黑米色素，该方法简单、提取率高，且原料可综合利用。     

酞菁、酞菁铜/硫化镉异质结的光伏效应的研究

本文研究了酞菁/硫化镉和酞菁酮/硫化镉异质结的光伏效应,在强度为7mW/cm~2的光照下,开路龟压为0.42V,短路电流为37μA/cm~2,光电转换效率为0.15%。p~(-n)结的质量因子受光照的影响。光谱响应特性研究表明,只有在p~(-n)结区加光生载流子的扩散长度范围内吸收的光才能产生光伏效应;工业纯的酞菁中可能存在着平均深度约为1.6 eV的深杂质陷阱。进一步研究将可:能使这种异质结发展成为光敏器件及太阳能电池。     

酞菁键合硅胶的制备及其用于HPLC分析邻苯二腈衍生物

制备和表征了两种酞菁键合硅胶固定相,三-α-(丁氧基)-β-(磺酰胺基)酞菁铜键合硅胶和三-α-(喹啉氧基)-β-(磺酰胺基)酞菁铜键合硅胶.研究了以这两种酞菁键合硅胶作为固定相的色谱柱对邻苯二腈衍生物的分离能力.实验结果表明,酞菁键合硅胶色谱柱对邻苯二腈衍生物的分离能力好于C18柱,有望作为专用色谱柱填料用于分离带有取代基的芳香族化合物.     

A comparison of iron phthalocyanine and cobalt porphyrin on the electrochemical catalysis in Ni-MH battery

The effects of iron phthalocyanine （FePc） and cobalt porphyrin （CoPp） on inner pressure and cycle behavior of sealed Ni-MH batteries were investigated in this study. The morphology of battery electrode was observed by SEM. The electrochemical impedance spectroscopy of floating-charge/discharge battery was also measured. Experimental results show that the addition of FePc or CoPp to the alloy electrode is an effective approach to decrease the internal pressure of battery during the process of charge and overcharge. In contrast to CoPp, the battery with FePc exhibits a slower capacity decay and a smaller overpotential at the same charge-discharge rate. As an electrocatalyst, FePc may more effectively speed up the reduction of oxygen, and decrease its reduction potential. As a result, the charge process is accelerated, the gas evolution is reduced and the pulverization of electrode materials is slowed down.     

活性白土柱层析法分离提纯姜黄素

分别用乙醇、乙酸乙酯、丙酮提取姜黄粉中的姜黄素,通过正交实验确定最佳提取溶剂为丙酮．采取逆向思维,将活性白土用于姜黄色素脱油脂进行提纯,并建立了高效液相色谱外标法用于分析姜黄素的含量．实验表明：用丙酮提取的,提取率最高,可达94.57%．丙酮提取液流经活性白土层析柱后,测得活性白土对姜黄素的吸附容量为7.34%,分别采用碱性水、碱性乙醇、碱性丙酮洗脱被吸附的姜黄素．通过单因素实验确定最佳吸附和洗脱条件．最终可得到高纯度、不吸潮的精制姜黄素产品．实验结果显示,色素的产率为2.36%,产品纯度为94.29%,色素总收率达80.71%．     

羧基酞菁锌与壳聚糖偶联物的制备

采用邻苯二甲酸酐为保护剂,对壳聚糖的氨基进行保护.氨基保护的壳聚糖与羧基酞菁锌的活性酯反应,再经脱保护基,得到羧基酞菁锌—壳聚糖偶联物.红外光谱初步确定二者通过酯键偶联,紫外可见吸收光谱显示偶联物有羧基酞菁锌的特征吸收峰,且Q带最大吸收峰红移,并据此得出偶联物中羧基酞菁锌与壳聚糖的表观摩尔比为3∶1.     

The constitutes and isomer distribution of di-（potassium sulfonate）-di-phthalimidomethyl phthalocyanine zinc

Sulfonate and/or phthalimidomethyl phthalocyanine zincs are obtained by the condensation reaction of anhydrous zinc acetate and two precursors, i.e. 4-phthalimidomethyl phthalonitrile and 4-（potassium sulfonated） phthalonitrile. The ZnPCSnPm mixture was separated into 5 components according to the number of substituted sulfonate groups and each component which has the same chemical constituent consists of different regioisomers. An HPLC method in isocratic conditions was developed to exercise quality control and make quantitative analysis of the photosensitizer, di-（potassium sulfonate）-diphthalimidomethyl phthalocyanine zinc （abbreviated as ZnPcS2P2, here, S represents sulfonate group, P the phthalimidomethyl group and ZnPc the phthalocyanine zinc）. Furthermore, by comparing the retention behavior of ZnPcS2P2 with that of ZnPcS2, positional structure of isomers of ZnPcS2P2 was speculated. Reversed-phase HPLC method with TEA-phosphate buffer and DMF as eluents in gradient conditions has been proved to be a powerful tool for the separation of such complex system.