光响应性偶氮苯-富勒烯纳米复合材料的水相合成及性能研究

首次提出以水相作为反应体系合成偶氮苯-富勒烯纳米复合材料(AZO-C₆₀)。先采用重氮偶合法制备出4-氨基-2,6-二甲基-4’-羧基偶氮苯(AZO),然后利用自由基加成法在水溶液中与十二烷基硫酸钠(SDS)修饰的C₆₀反应合成AZO-C₆₀。利用傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、场发射扫描电子显微镜(SEM)等测试方法表征了AZO-C₆₀的化学结构和微观形貌,利用热重分析仪(TGA)分析了AZO和AZO-C₆₀的热稳定性,采用紫外-可见吸收光谱(UV-Vis)研究了AZO和AZO-C₆₀的光谱性能。研究结果表明,相比于未功能化的C₆₀,AZO-C₆₀纳米复合材料展现出了特殊的光响应性,良好的热稳定性和优异的循环稳定性。

Synthesis and performance research of photo-responsive azobenzene-fullerene nanocomposites in aqueous phase

It was the first time to synthesize the azobenzene-fullerene nanocomposites (AZO-C 60 ) in the aqueous phase system. The 4-((3, 5-dimethlaniline)-diazenyl)-4-benzoic acid (AZO) was prepared by diazo coupling. Then the AZO-C 60 was synthesized by radical addition in aqueous solution using AZO and C 60 modified with sodium dodecyl sulfate (SDS). The chemical structure and micromorphology of AZO-C 60 were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (SEM). Moreover, the thermal stability and spectral performance of the AZO and AZO-C 60 were studied by thermogravimetric analyzer (TGA) and UV-vis absorption spectroscopy (UV-Vis), respectively. The results showed that the AZO-C 60 nanocomposites exhibited unique photo-response, good thermal stability and excellent cycle stability compared to the unfunctionalized C 60 .