聚(3-戊酰基)吡咯的合成与光学特性

合成了一种新型酰基取代的聚吡咯衍生物—聚(3-戊酰基)吡咯(PVPy)。通过傅立叶变换红外光谱(FT-IR)、氢核磁共振谱(1H-NMR)、紫外-可见光谱(UV-Vis)、热重分析(TGA)和荧光光谱(PL)等分析手段对聚合物的结构和性能进行了分析。PVPy的TGA谱显示,该聚合物的热分解温度为222℃;通过碘掺杂和浓硫酸(98%)掺杂处理后,PVPy的电导率提高了3个数量级,分别为0.52 S/cm和0.28 S/cm;UV-Vis谱表明;PVPy的光学禁带宽度(Eg)为2.16 eV;PL研究表明,在346 nm的紫外光的激发下,PVPy能够发出很强的波长为423 nm的蓝色荧光。

Optical Property and Synthesis of Poly(3-Valeroylpyrrole)

A polypyrrole derivative,poly(3-valeroylpyrrole)(PVPy) with acyl substituents was synthesised.The chemical structure and properties of the polymer were characterized by Fourier transform infrared spectroscopy(FT-IR),1H-nuclear magnetic resonance(1H-NMR),ultraviolet-visible spectroscopy(UV-Vis),thermal gravimetric analysis(TGA) and photoluminescence spectroscopy(PL).TGA results indicate that PVPy is decomposed at 222 ℃.The conductivities of PVPy doped with iodine and concentrated sulfuric acid(98%) are 0.52 S/cm and 0.28 S/cm,respectively.UV-Vis reveals the energy band gap of PVPy is 2.16 eV.The PL of PVPy was also investigated,the result shows that PVPy is a good photoluminescence material and strong blue fluorescence can be observed when the excitation wavelength is 346 nm.