Ahmed Hanaa M, Windham Amber D, Al-Ejji Maryam M, Al-Qahtani Noora H, Hassan Mohammad K, Mauritz Kenneth A, Buchanan Randy K, Buchanan J Paige
Department of Chemistry and Biochemistry, University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406, USA.
Faculty of Engineering, Benha University, Shoubra, Benha 13 512, Egypt.
Materials (Basel). 2015 Nov 18;8(11):7795-7804. doi: 10.3390/ma8115424.
Fullerene-containing materials have the ability to store and release electrical energy. Therefore, fullerenes may ultimately find use in high-voltage equipment devices or as super capacitors for high electric energy storage due to this ease of manipulating their excellent dielectric properties and their high volume resistivity. A series of structured fullerene (C) polymer nanocomposites were assembled using the thiol-ene click reaction, between alkyl thiols and allyl functionalized C derivatives. The resulting high-density C-urethane-thiol-ene (C-Thiol-Ene) networks possessed excellent mechanical properties. These novel networks were characterized using standard techniques, including infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and thermal gravimetric analysis (TGA). The dielectric spectra for the prepared samples were determined over a broad frequency range at room temperature using a broadband dielectric spectrometer and a semiconductor characterization system. The changes in thermo-mechanical and electrical properties of these novel fullerene-thiol-ene composite films were measured as a function of the C content, and samples characterized by high dielectric permittivity and low dielectric loss were produced. In this process, variations in chemical composition of the networks were correlated to performance characteristics.
含富勒烯材料具有储存和释放电能的能力。因此，由于能够轻松操控富勒烯优异的介电性能及其高体积电阻率，富勒烯最终可能会用于高压设备装置或用作高电能存储的超级电容器。使用硫醇-烯点击反应，在烷基硫醇与烯丙基官能化的C衍生物之间组装了一系列结构化富勒烯（C）聚合物纳米复合材料。所得的高密度C-聚氨酯-硫醇-烯（C-Thiol-Ene）网络具有优异的机械性能。使用包括红外光谱（FTIR）、差示扫描量热法（DSC）、动态力学分析（DMA）和热重分析（TGA）在内的标准技术对这些新型网络进行了表征。使用宽带介电谱仪和半导体表征系统在室温下的宽频率范围内测定了制备样品的介电谱。测量了这些新型富勒烯-硫醇-烯复合薄膜的热机械和电学性能随C含量的变化，并制备了具有高介电常数和低介电损耗的样品。在此过程中，网络化学成分的变化与性能特征相关联。
