方酸染料在远红光区／近红外区对纳米晶二氧化钛电极的高效敏化作用

Four para-dialkylaminophenyl （PDAAP1-PDAAP4） bearing carboxyl groups were studied for application to the dye-sensitized solar cells （DSC）. It was found the short spacer CH2 between carboxyl and dialkylaminophenyl chromophore in PDAAP3 and PDAAP4 led to highly efficient monochromatic incident photon-to-current conversion efficiencies （IPCE）, however the long alkyl group C4H9 attached on aniline moieties in PDAAP2 and PDAAP4 favored improvement of open-circuit photovoltage. Thus, the solar cell sensitized by PDAAP4, having both short carboxyl groups CH2COOH and long alkyl groups C4H9, exhibited the IPCE maximum of 73% at 670 nm and overall energy conversion efficiency η of 3.06%, representing the highest IPCE and η values so far in dialkylaminophenyl-based organic dye-sensitized semiconductor solar cells. Taking advantage of the highly efficient sensitizing ability of PDAAP4 in far-red region, the data of IPCE above 630 nm of the solar cells were improved greatly by cosensitization with both N3 and PDAAP4. The influences of the TiO2 film thickness and the concentration of 4-tert-butylpyridine （TBP） in electrolyte were also investigated.     

CaCO3/PEEK复合体系的力学行为和热行为研究

以聚醚醚酮和碳酸钙复合体系为研究对象,考察了偶联剂和填料添加量对复合材料力学行为和热行为的影响.发现磺化聚醚醚酮作为偶联剂能有效地改善材料的力学性能,提高基体树脂的玻璃化转变温度,降低基体树脂的熔点,有助于改善聚醚醚酮的加工条件     

有机溶剂法无水氯化镁的制备与表征

Ammonium carnallite was synthesized by hydrated magnesium chloride in salt lake and ammonium chloride solution. Dehydrated ammonium carnallite was dissolved in methanol under low temperature by feeding ammonia, to prepare anhydrous magnesium chloride. The results show that anhydrous magnesium chloride contains magnesium oxide in an amount less than 0.1% by weight, the yield of magnesium chloride was above 99.5%. Ammonium carnallite, ammoniation magnesium chloride and anhydrous magnesium chloride were characterized by thermoanalysis, X-ray powder diffraction and scanning electron microscopy.     

模式识别—人工神经网络在化学中的若干新应用

本文通过我们应用模式识别－人工神经网络方法预报新化合物、熔盐相图以及复杂化学反应体系的研究，展示应用模式识别－人工神经网络方法与物理化学理论相结合，研究化学现象的可能性和应用价值。     

贵州遵义二叠系锰矿床中稀土元素赋存状态研究

贵州遵义地区是中国华南二叠系锰矿重要富集区之一,锰资源储量逾2亿t。通过对遵义长征、南茶及统子窝锰矿床23件岩矿石样品稀土元素组成进行测试分析,发现锰矿床普遍富集稀土元素,其中矿石∑REE总量介于326.3~1138.9×10~(-6)之间,平均538.84×10~(-6)。锰矿中凝灰岩∑REE总量最高,达到1824.5×10~(-6)。电子探针和能谱分析结果表明,锰矿中稀土元素主要以稀土独立矿物的形式存在,其中独居石、磷钇矿是最主要的稀土矿物,其以富集Ce,La和Nd为主要特征,部分矿段重稀土元素Y相对富集,指示遵义二叠系锰矿床伴生稀土组分主要以富集轻稀土元素为主要特征。     

Crystal Structures and Luminescent Properties of Three Coordination Polymers Based on 2,5-Furandicarboxylic Acid Ligand and 1,10-Phenanthroline

Three new coordination polymers,namely [Zn(FDA)(phen)(H_2O)·H_2O]_n(1),[Cd(HFDA)(phen)2(NO3)](2) and [Cd(FDA)(phen)]n(3)(H_2FDA = 2,5-furandicarboxylic acid,phen = 1,10-phenanthroline) have been synthesized by the solvothermal method and characterized by elemental analysis,IR,powder X-ray diffraction,thermogravimetric analysis and X-ray single-crystal diffraction analysis.For 1,the neighboring Zn~(2+) ions are bridged by FDA2-as linkers to form one-dimensional(1D) chains,and phen ligands are as the terminal ligands.Furthermore,the 1D chains are packed into a three-dimensional(3D) supramolecular structure through hydrogen bonds and π-π interactions.For 2,the H_2FDA ligand is partial deprotonation,which is a rare phenomenon among other coordination polymers based on H_2FDA.Under the synergetic effect of phen ligands and the partial deprotonation of H_2FDA,the structure of 2 is discrete.For 3,the Cd~(2+) ions are linked by two carboxylates of FDA2-ligand to give rise to 1 D zig-zag chains,and phen ligands chelate the Cd~(2+) ions like 1.In addition,solid-state luminescent spectra of three coordination polymers were also studied at room temperature.     

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.     

N,N’-二(2-吡啶基)-1,6,7,12-四(4-叔丁基苯氧基)-3,4:9,10-苝酰亚胺的合成、表征及性能研究

优化了N,N’-二(2-吡啶基)-1,6,7,12-四(4-叔丁基苯氧基)-3,4:9,10-苝酰亚胺的合成方法, 得到一种简单有效的在苝酰亚胺的酰胺和bay位置同时取代的方法. 对其结构进行了表征, 研究了其溶液态和薄膜态的光学性质和电化学性质. 并且对其能级结构和电荷分布进行了分子模拟.     

基于改进Harris角点算法的摄像机标定技术研究

针对传统的Harris焦点提取算法对噪声敏感,执行效率低等不足,提出了一种改进的Harris焦点提取方法。以Harris焦点提取算法为基础,通过优化角点响应函数,消除系数 K,提高焦点提取算法的执行效率。采用改进的 Harris 算法对黑白棋盘表格进行内角点提取,利用张正友摄像机标定法计算USB摄像机的内外参数。实验结果证明了该方法可以有效的对黑白棋盘格内角点进行提取,准确高效,提高了摄像机的标定精度和准确性,是一种可行的摄像机标定方法。     

新型无油、小体积微球高压充氘氚系统的研制

根据国内激光惯性约束聚变研究对氘氚微球靶的更高要求，新研制了一套能制备15．0MPa氘氚玻璃微球靶系统，结构见图1。