PPV的合成和光致发光光谱

Synthesis of Poly(Phenylene Vinylene)s and Measurements of Photoluminescence Spectra

用Lenz法和Burn法合成了PPV ,发现热转化温度是改变光致发光光谱的主要因素 ,随着热转化温度升高 ,谱峰发生红移 ,强度下降 ,谱峰形状变化很大 ;轻微的氧化、膜厚对发光强度有影响 ,对谱峰位置、形状影响很小 ;另外渗析不完全会使Lenz法合成的PPV谱峰发生蓝移和形状变化。

Poly(phenylene vinylene)s are synthesized by utilizing Lenz and Burn's methods, respectively. It is found that the thermal converting temperature is the key factor affecting the photoluminescence(PL) spectra.That is to say,as converting temperature increases,red-shift appears,while PL intensity decreases and shape changes . Slight oxidization and the thickness of the film have an effect on the PL intensity of PPVs and the blue-shift and spectra shape change will occur unless the prepolymer synthesized by Lenz's method is thoroughly dialyzed.