染料敏化太阳能电池的染料敏化剂的最新研究进展

染料敏化太阳能电池主要是模仿光合作用原理,通过染料敏化纳米半导体把太阳能转化为电能,这种电池近年来得到飞速发展,成果显著,已经引起全世界的广泛关注。本文简明扼要的介绍了DSSC的基本结构、工作原理和染料敏化剂的特点,综述了最新染料敏化剂设计合成路线、特点及其光电转化效率,并展望了今后染料敏化剂的研究与设计思路。     

卟啉类染料敏化剂的研究进展

染料敏化太阳能电池具有价格低廉、制作工艺简单和较高的光电转换效率等优点,受到人们的广泛关注。作为染料敏化太阳能电池的关键,敏化剂发挥着重要的作用。卟啉化合物因在可见光区域吸收强、容易修饰等优点受到人们广泛而深入的研究。介绍了染料敏化太阳能电池的结构、基本原理分析了近年来卟啉染料敏化剂的发展及它们的结构变化对其光电性能的影响,展望了卟啉敏化剂与其他敏化剂共敏化,提高可电光吸收范围可能是提高光电转换效率的有效途径。     

染料敏化纳米晶太阳能电池的研究进展

染料敏化太阳能电池是近些年发展起来的新型、高效、低成本的光电池。而起到负载敏化剂以及收集、传输电子作用的光阳极是关系到该电池性能的重要组成部分,且敏化的效果是整个光电池光电转换效率的关键。从染料敏化纳米晶太阳能电池（DSSD s）的结构和工作原理出发,详细阐述了光阳极敏化、敏化剂选择及分类和敏化方法,并对光阳极及其敏化的可能发展趋势做了简要叙述。     

羧基类不对称锌酞菁敏化染料的研究进展

染料敏化太阳能电池是太阳能电池的重要发展方向之一,染料敏化剂是影响电池光电转换效率的重要因素。探讨了染料敏化太阳能电池中羧基类不对称锌酞菁作为光敏剂的研究进展及其成果,提出对未来发展的展望。     

染料敏化纳米薄膜太阳能电池

本文综述了近几年来染料敏化纳米薄膜太阳能电池的研究进展。简要介绍了染料敏化纳米晶太阳能电池的结构和工作原理,重点介绍了电池各组成部分的最新研究成果及现状,包括纳米薄膜、电解质体系、染料敏化剂、对电极和上转换发光层。其中,电解质体系部分主要介绍了高分子聚合物凝胶电解质和导电高分子聚合物固态电解质的研究进展。最后讨论了当前研究中存在的问题,并提出了提高电池光电转换效率的设想与对策,对未来的发展方向进行了展望。     

提高染料敏化太阳能电池转化率研究新进展

染料敏化太阳能电池具有低生产成本、简单生产工艺以及环境友好型等优点,使其成为太阳能电池研究领域的热点。介绍了染料敏化太阳能电池的基本结构和工作原理,结合国内外最近的研究动态,重点阐述了在染料敏化太阳能电池研究领域的光阳极、敏化染料和电解质等构成部分的研究进展。     

以羧基为吸附基团的meso-卟啉在染料敏化太阳能电池中的应用

卟啉具有良好的光、热和化学稳定性。这些优异的特性使它在染料敏化太阳能电池领域得到了较为深入的研究。以meso-卟啉敏化剂为主线,介绍了染料敏化太阳能电池的基本构造及原理,综述了以羧基为吸附基团的meso-卟啉在染料敏化太阳能电池中的应用,讨论了羧基吸附基团对光电转换效率的影响。     

染料敏化太阳能电池染料敏化剂的研究进展

染料敏化太阳能电池(DSSC)具有原材料丰富、制备成本低廉、工艺简单,在工业化生产中具有较大的竞争优势.在染料敏化太阳能电池中,敏化剂的分子结构及其在二氧化钛表面的聚集体形态对电池的性能都有很大的影响.本文详细介绍了不同染料敏化剂对于染料敏化太阳电池性能的直接影响,以及对其未来发展前景的分析和展望.     

染料敏化纳米晶薄膜太阳能电池用染料敏化剂的研究进展

染料敏化剂的性能是影响染料敏化太阳能电池光电转化效率的重要因素,关于染料敏化剂的研究是当前研究的热点之一。本文简要介绍了染料敏化剂在染料敏化纳米晶太阳能电池中的作用以及各种染料敏化剂的优缺点及发展现状,并对其应用前景进行了展望。     

功能染料在有机太阳能电池中的应用

文章对用于太阳能电池的重要材料——染料敏化剂,及其在光电转换中所起的作用,包括对光的吸收,电子转移与电荷分离,以及从二级电子给体获得电子而恢复的过程等,进行了讨论,也对电池中存在可引起能量损失的途径加以考察,并对电池工作过程的动态学问题,做了简要的说明.此外,还对染料敏化太阳能电池DSSC与目前正进行着广泛研究的有机光生伏打电池所用材料的相似性和不同方面进行了讨论.     

基于氮杂氟硼二吡咯染料的柱相液晶

近年来Aza-BODIPY染料因其优异的光学性质备受关注。利用"click"反应合成了包含三氮唑及3，4，5-三（十二烷基）苯甲酰胺单元的Aza-BODIPY染料1，并通过¹H NMR、¹³C NMR和MS等方法表征了其化学结构。Aza-BODIPY染料1在偏光显微镜下呈现典型的扇形织构。差示扫描量热法（DSC）研究中观察到了此材料的固相-液晶相以及液晶相-液相的相转变。进一步利用小角X射线衍射（SAXD）研究了液晶相的结构，结果表明Aza-BODIPY染料1形成了六方柱状液晶相（Col_hd）。据我们所知，这是首例基于Aza-BODIPY染料的柱相液晶材料。     

新型荧光纤维毡的制备及性能

先以丙烯腈和丙烯酸为单体合成聚合物（Polymer-1）,用荧光染料对聚合物进行接枝改性后得到聚合物（Polymer-2）;然后将这两种聚合物通过静电纺丝法制备出纳米纤维毡。研究了单体配比对Polymer-1共聚物粘均分子质量的影响;用DSC和IR测试手段对聚合物结构进行表征,用SEM和荧光光谱分析（FS）测试手段对纳...     

Diffusion and sorption studies of dyes through PVA cryogel membranes

The capacity of poly(vinyl alcohol) (PVA) to crosslink through freeze/thaw method was used to obtain PVA hydrogel membranes (HG) that were subjected to sorption and diffusion experiments using three dyes: Congo red (CR), methylthymol blue (MTB), and crystal violet (CV). To study the sorption of dyes into the cryogenic membrane, dye solutions at different concentrations were used. After sorption, desorption of dyes from the PVA membrane was monitored to quantify the possible regeneration of the membrane (PVA HG). To have a deep insight on the mechanism behind the desorption process, dye‐release kinetics were studied. The diffusion experiments reveal the fact that CR and MTB do not permeate the PVA HG membrane making it a promising candidate in the advanced purification processes of wastewaters. The effect of the incorporation of dyes (CV, CR, and MTB) on the chemical properties of PVA cryogel matrices has been studied by using several techniques such as: differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

Interaction of dyes used for foods with food packaging polyester fibers

The effect of pH, temperature, dye concentration, and additives on the absorption of the dyes FD & C (Food, Drugs and Cosmetics) Blue 1 and Blue 2 upon poly(ethylene terephalate) (PET) and poly(butylene terephthalate) (PBT) subjected to different draw ratios (and, thus, resulting in different percentage crystallinities determined with DSC and wide-angle X-ray diffraction patterns) was investigated and a correlation between these parameters and the dye uptake was suggested. The absorption kinetics of the dyes on the polyesters were studied and a mechanism based upon the development of hydrogen bonds between the dyes and the end groups (? COOH,? OH) of the polyesters and the swelling of the network was proposed. Finally, an indirect measurement of the T_g values of the polyesters was suggested based upon the different dyeing diffusion rates. © 1994 John Wiley & Sons, Inc.     

Interaction of dyes with chitosan derivatives

The states of water in N-acylated, both aliphatic and aromatic, chitosan gels were investigated by DSC technique. The amounts of two states of water, freezable and nonfreezable water, were found to depend on the chemical and physical structure of the gels. The interaction between these hydrophobic gels and the dyes which have been designed and prepared to carry the ionic, hydrophilic, and hydrophobic nature was determined in detail. The dyes having ? OH, ? N(C₄H₉)₂, and naphthalene nucleus show a remarkable increase of the equilibrium sorption to compare with that of methyl orange. The contribution of the electrostatic, hydrophobic, and hydrogen bonding interaction in the sorption was discussed. The predominant contribution of the hydrophobic interaction in the systems of butyl orange/N-octanoyl chitosan gels has been made clear by means of the temperature dependence of the sorption.     

Syntheses and investigation of thermal properties of copper complexes with azo-containing Schiff-base dyes

In the present study a series of azo dyes: 5-((4-pentyloxyphenyl)azo)-salicylaldimine-N-R (R = phenyl, 4-methoxyphenyl, cyclohexyl) and related copper(II) bis chelates have been synthesized and characterized by IR, NMR, mass spectroscopies and elemental analyses. The thermal stability of free ligands and related copper(II) bis(chelate) was studied by using differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA). The differences in the thermal stability were related to the structure of free ligands and copper complexes and decomposition products were characterized according to their X-ray diffraction pattern.     

现代活性染料与分散染料的发展

近年分散染料与活性染料的发展因受相应纤维大幅增长的关联,产量和品种开发均列第一、二位.本文就这二类染料进行详细评述.近十年活性染料的新发色母体和活性基没有新的突破性进展,引入取代基改善染色性能的结构修饰和商品化技术成为活性染料发展重点.分散染料则以开发杂环型分散染料为重点.本文所列染料分子结构均为近年开发的品种,许多是鲜为人知的.     

偶氮染料的光敏性研究

合成了单偶氮蒽醌、双偶氮蒽醌和双偶氮芴酮三个系列偶氮染料,并以此制成了功能分离型双层光电导体。蒽醌类单偶氮染料扩大取代基的共轭体系,可以提高光敏值,最大可由Ix.S2800提高到Ix.S62,含-NO_2的染料光敏性最高,最低为-OCH_3。蒽醌双偶氮类染料取代基对光敏性的影响与蒽醌单偶氮类染料相同,前者的光敏性高于取代基相同的后者。取代基对芴类双偶氮染料光敏性的影响与前两类不同,含-Cl取代时光敏性最高,含-NO_2最低。染料的光敏性排序为:芴酮类>双偶氮蒽醌类>单偶氮蒽醌类。     

BODIPY荧光二向性液晶染料的制备及性能

以8-(4-碘苯基)氟硼吡咯为原料,与4-乙炔基苯基胆甾醇酯或4-乙炔基苯戊基双环己基甲醇酯进行Sonogashira偶联反应,制备了两个含氟的荧光二向性液晶染料DC-1和DC-2,其化学结构均由1HNMR、13CNMR和HRMS鉴定。将染料DC-1和DC-2进行光谱测试,最大吸收波长和最大发射波长分别在503和517 nm,发亮绿色荧光。基于宾-主(G-H)效应,将染料DC-1和DC-2作为宾体组分溶于主体液晶E7中,测得DC-2在液晶E7中的吸收二向色比高达8.91,有序参数为0.73,可应用在宾-主型液晶显示器(GH-LCD)中。经差热扫描量热仪(DSC)测试,染料DC-1和DC-2在一定温度范围内具有介晶性质,并通过偏光显微镜(POM)验证了DC-1和DC-2的液晶织构。