两亲性D-π-A型有机染料在染料敏化太阳能电池中的应用

设计合成了6个带有烷基链的D-π-A型有机光敏染料应用于染料敏化太阳能电池. 发现长链烷基有利于电池开路光电压的提高. 利用脂肪酸共敏化可进一步提高染料分子的敏化效果, 且提高的程度与脂肪酸的链长有重要关系.     

吲哚衍生物与花生酸混合LB膜的制备及结构研究

本文将3-三氰基乙烯基-N-十六烷基吲哚与花生酸混合制成单分子膜。不同摩尔比混合膜的π-A曲线均出现平台,表明膜压缩过程中分子排列相态发生变化。混合LB膜的紫外吸收光谱证明吲哚分子形成聚集体,X-射线衍射结果说明这种聚集体被夹带在花生酸的框架结构中。     

1，3—Diphenyl—5—（9—phenanthry1）—2—pyrazoline（DPPhP）：An Excellent Ho1e—Transport Material for Use in Organic Light—Emitting Diodes

An excellent hole-transport material,1,3-diphenyl-5-(9-phenanthryl)-2-pyrazoline(DPPhP)for OLEDs was studied.This compound not only offers hlgh glass transition temperature(Tg=96℃）,good film forming ability,and high HOMO energy level,but also displays excellent hole-transport property.The electrlumlnescent device with a simple structure of ITO/DPPhP(60nm)/AIQ(60mm)/LiF(0.8nm)/Al shows an external quantom efficiency as high as 1.6?     

16-脱氢孕烯醇酮醋酸酯的环境友好合成法

Instead of environmentally toxic chromium oxidant, singlet oxygen generated photcchemically was used as environmentally friendly and benign oxidizing agent to accomplish the transformation of pseudodiosgenin diacetate to diosone efficiently in a low toxic and less expensive solvent acetone. Accordingly 16-dehydropregnenolone acetate(16-DPA), an important intermediate for preparation of steroidal drugs, was prepared in good yield (75%) when photoreaction was run in acetone/acetic anhydride/pyridine system. The mild reaction condition as well as simple and environmentally friendly process made the method commercially viable and important for production of 16-DPA in industrial scale.     

吨染料与反胶束体系中CdS的光敏电子转移

用ＡＯＴ／异辛烷／水反胶束体系制备出了不同尺寸大小的纳米ＣｄＳ,并以曙红（ＥＯ）和孟加拉玫瑰红（ＲＢ）为探针分子,研究了它们与硫化镉微粒间的光致电荷转移相互作用,用光照实验和ＥＳＲ技术研究了这些染料向ＣｄＳ的导带注入电子的过程并讨论了作用机理     

α-蒎烯的光氧化反应研究

α-蒎烯和氧能在基态条件下形成CCT复合物,在与CCT复合物吸收相应波长的光辐照下,有利于促进蒎烯的光氧化反应。在氧化反应中,存在着明显的溶剂极性的影响,极性愈大,反应的速度愈快。这一切都说明电荷转移在反应中起着重要的作用。此外,正由于存在着基态的CCT复合物,因此α-蒎烯的氧化反应也能在暗的条件下进行。根据蒎烯光氧化和暗氧化反应产物的分析,可以肯定蒎烯在本工作实验条件下的氧化反应是通过自由基机理而进行的。     

氰基乙烯基苯胺衍生物的电化学行为

本文利用循环伏安法研究了电子给-受体模型化合物——氰基乙烯基苯胺衍生物的电化学行为,并对推电子取代基团—NH_2和—N(CH_3)_2与吸电子取代基团氰基乙烯基对化合物电化学行为的影响进行了较为详细的讨论.提出了这些化合物的电氧化态和电还原态的结构,通过分析比较叔、仲和伯自由基对化合物电化学行为的影响,探讨了电极反应机理.     

染料电极的光电转换效应研究

应用一种简便的旋转涂布方法,制备了卟啉/SnO₂,酞菁/SnO₂以及卟啉/酞菁/SnO₂单层和双层电极,在双层电极研究中发现,卟啉和酞菁层的涂布次序对形成的双层电极是否出现叠加现象有很大影响。对所出现的现象进行了初步的讨论。     

Morphology Control over the Organic Nanoparticles of 1,3-Diphenyl-5-（9-anthryl）-2-pyrazoline

The organic nanoparticles of a blue-light-emitting molecule, 1,3-diphenyl-5-(9-anthryl)-2-pyrazuline, were prepared by reprecipitation method using acetonitrile as the solvent for the molecular precursor. Three morphologies, spherical, doughnut-shaped and cubic, could be observed on the silicon substrate forthe nanoparfides by the volume-controlled addition of acetonitrile. The evolution of particle morphology as a function of acetonitrile addition was attributed to the variation of the growth habits of the particles in the different environment. The nanoparticles exhibit the novel photoluminescence spectra as compared to those of monomer and the bulk crystals.     

DOPANT EFFECTS OF SQUARYLIUM CYANINE DYES ON FUNCTIONAL DEVICES

本文初步研究了方酸菁染料在功能器件中的应用,并探讨了相关机理。我们用方酸菁掺杂8羟基喹啉铝发光层,获得了红光有机电致发光器件;用掺杂方酸菁的联吡啶钌作光敏剂修饰TiO₂纳晶薄膜电极,有效地弥补了联吡啶钌在600nm以上红光区采光能力的不足,从而大大提高了光电化学太阳电池的总体光电转换效率。