Electrochemical Synthesis of C60-Derivatized Poly(thiophene)s from Tailored Precursors
摘要:
New series of C-60-derivatized bithiophenic precursors with low oxidation potential have been synthesized using the thiolate deprotection chemistry. The analysis of the electropolymerization of these compounds shows that the use of two-site precursors leads to polymers combining enhanced conjugation length, faster switching time, and improved stability under redox cycling. The unsuccessful attempts to identify the optical signature of the reduced forms of the attached C-60 by spectroelectrochemistry suggest that the PT backbone is unstable in the presence of the C-60 anion radical. Preliminary photoelectrochemical experiments on films deposited on platinum electrode reveal a significant enhancement of the photocurrent for the C-60-derivatized polymer when compared to a nonsubstituted reference polymer, indicating that these new materials are potentially useful for photovoltaic energy conversion.
state to form conductive (redox) polymer layers without any additives. Such post‐deposition polymerization offers efficient use of material, high mass loading (up to 10 mg cm−2) and good flexibility in the choice of substrate and coating method. By employing these materials as anode and cathode in an acidic aqueous electrolyte a rocking‐chair protonbattery is built. The battery shows good cycling stability
基于在水性电解质中运行的有机物的电极为组装和利用电池提供了新的方法和技术,而这是传统电极材料难以实现的。在这里,我们报告了如何在溶液中处理、沉积、干燥并随后在固态下聚合以形成导电(氧化还原)聚合物层而无需任何添加剂,具有萘醌或对苯二酚氧化还原活性侧基的噻吩基三聚结构。这种后沉积聚合提供了材料的有效利用、高质量负载(高达10 mg cm -2 )以及基材和涂层方法选择的良好灵活性。通过在酸性水性电解质中使用这些材料作为阳极和阴极,构建了摇椅质子电池。该电池表现出良好的循环稳定性(500次循环后85%),可承受快速充电,100秒内达到满容量(60mAh g -1 ),允许与光伏直接集成,即使在-24°下也能保持其良好的特性C.
Synthesis and Properties of New Dithienosilole Derivatives as Luminescent Materials
作者:Zając、Honisz、Łapkowski、Sołoducho
DOI:10.3390/molecules24122259
日期:——
Three new organosilicon compounds based on dithienosilole (DTSi) were synthesized in good yields. We report the optical and electrochemical properties of the resulting derivatives. We find that these compounds absorb the light in the ultraviolet and blue light range, and they exhibit luminescence in almost the entire range of visible light. After electropolymerization were significantly lowered, the
HIGHLY-FLUORESCENT AND PHOTO-STABLE CHROMOPHORES FOR ENHANCED SOLAR HARVESTING EFFICIENCY
申请人:NITTO DENKO CORPORATION
公开号:US20130074927A1
公开(公告)日:2013-03-28
The invention provides highly fluorescent materials comprising a single (n=0) or a series (n=1, 2, etc.) of benzo heterocyclic systems. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices.
Electropolymers of 4-(thieno[3,2-b]thiophen-3-yl)benzonitrile extended with thiophene, 3-hexylthiophene and EDOT moieties; their electrochromic applications
onitrile based monomers having thiophene, 3-hexylthiophene and EDOT at the peripherals were synthesized. Their electropolymerization produced the corresponding electroactive polymers, P1, P2, and P3, which exhibited electrochromic properties with color developments from red to blue, orange-yellow to pale-blue, and purple to pale-grey, respectively. Functional design of the monomers with electron deficient
Control over the electronic structure in π-conjugated polymers is of great importance for the development of organic electronics and spintronics. In this study, we synthesized a sheathed cross-conjugated polythiophene through oxidative electrochemical polymerization. Spectroelectrochemistry has revealed that unlike linearly conjugated polythiophenes, polarons were confined in the repeating units that