A novel dual mechanism in dye‐sensitized solar cells

An innovative dye‐sensitized solar cell based on achiote seeds with a new dual electrical generation mechanism is presented. This dye‐sensitized solar cell, in addition to the well‐known mechanism, where the conduction electrons are released from the dye molecules due to their interaction with photons, shows a distinct chemical mechanism that produces an effective electric current under dark conditions. Both mechanisms operate simultaneously; however, the electrical signal obtained from the photoelectrical mechanism is stronger. Additionally, during a rapid transition from darkness to illuminate conditions, non‐linear oscillations in the current signal are produced when the system is shifted rapidly far from equilibrium conditions. Copyright © 2017 John Wiley & Sons, Ltd.     

21世纪的染料学科和染料工业

从染料学科和染料工业在 2 0世纪发展的总体情况出发 ,就染料学科和染料工业范围、传统染料前景、染料工业生产急需解决的问题、基础研究关键课题等 4个方面预测了 2 1世纪染料学科和染料工业可能的发展前景 .     

活性污泥法在喷射鼓泡环流三相反应器中处理染料废水的研究

采用活性污泥法，以牛粪浆作污泥源，结合新型的射鼓泡环流三相生物反应器，试验研究了三苯甲烷类碱性染料废水降解过程。选用粉煤灰为载体，研究了废水降解过程中的影响因素，确定了最优操作条件；通过流量为６ｍ＾３／ｈ，操作温度为２８℃左右，ＰＨ介于６．５－７．５，废水处理量为４０Ｌ／ｈ；连续降解时脱率大于９０９％ＣＯＤｃｒ的去除率大于７０％。     

A comparison of optical geometries for combined flash photolysis and total internal reflection fluorescence microscopy

Total internal reflection fluorescence (TIRF) microscopy, used in conjunction with flash photolysis, provides a useful way of investigating the kinetics of macromolecular interactions. We compare different TIRF optical geometries to establish an optimal combination. Excitation light was introduced via four different arrangements: (1) a prism positioned on the microscope optical axis, (2) an offset prism with propagation through a silica slide trans to the objective lens, (3) an offset prism with propagation through a silica coverslip cis to a water-immersion objective lens and (4) a prismless arrangement using a high NA oil-immersion objective lens. Photolysis was achieved using a Xe flash lamp and a customised silica condenser lens. Single myosin molecules labelled with a Cy3 fluorophore were used as a test sample. Although the offset trans prism gave the best signal-to-background ratio, a customised thin rhombic prism incorporated, on axis, into the flash condenser assembly was almost as good and was more practical for scanning multiple fields. An oil-immersion lens gave the brightest image for sample depths < 30 µm but above this limit, a water-immersion lens was better. The prismless arrangement may offer advantages in other situations but it is important to check the actual numerical aperture of the objective lens.     

Organic dyes with oligo-n-hexylthiophene for dye-sensitized solar cells: Relation between chemical structure of donor and photovoltaic performance

Organic dyes with the oligohexylthiophene linkage having several donor parts, carbazole, indole, and indoline, were newly synthesized as sensitizers for dye-sensitized solar cells. The carbazole was most efficient donor moiety for DSSCs among these dyes with the oligothiophene linkage. Carbazole dyes were adsorbed with larger amount of molecules on the TiO₂ film than both indole dyes and indoline dyes. Therefore, both the V_OC and the electron lifetime of DSSCs with the carbazole dyes were highly observed. The decreasing of J_SC of DSSCs with indole and indoline dyes also caused by the reducing the adsorption amount of dyes.     

染料生产过程的自动控制

详细介绍了我国染料工业的发展现状,染料生产过程的综合自动控制水平、生产特点及其控制要求;列举了自动控制的主要内容,常用的控制方案以及控制方案选择的基本原则。最后对自动控制技术的应用前景作了展望,并简述了提高染料生产过程自控水平的重要意义。     

皮革黑染色废液的处理

用“絮凝－吸附－沉淀”法对皮革黑染色废液进行处理。结果表明：脱色率大于９６％，ＣＯＤｃｒ去除率为９２．４％，达到了国标排放标准，令人满意。     

布速与气流染色

论述了气流染色时布速的产生、布速对气流染色的影响,阐明了在气流染色时对布速的控制.     

Photophysical properties and photostability of novel symmetric polycyclicphenazine-type fluorescent dyes and the dye-doped films

Novel symmetric polycyclicphenazine-type fluorescent dyes have been synthesized and characterized in solution and in polymer films. The dyes exhibited two strong absorption bands at around 365-428 nm and 519-567 nm and an intense fluorescence band at around 560-600 nm (Ф = 0.70-0.87) in 1,4-dioxane. The dye-doped polymer films showed excellent wavelength conversion function that efficiently convert ultraviolet and yellow lights into red light (Ф = 0.61-0.92). Moreover, the photostability of the dye-doped PS, PMMA, and PLA films has been investigated.