Spectroscopic, morphological, thermal and dielectrical analysis of composite of polythiophene with photoactive transition metal complex of W(IV)

Bulletin of Materials Science

关键词: Polythiophene (PTh);    composite;    chemical synthesis;    thermal study;    dielectric study;    ac-conductivity.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The present work involves the synthesis of polythiophene–potassium octacyanotungstate(IV) dihydrate compositevia in-situ oxidative chemical polymerization method using FeCl$_3$ as an oxidant. The resulting composite hasbeen subjected to Fourier transform infrared, X-ray diffraction (XRD) and scanning electron microscopy characterizationtechniques, which confirm the successful synthesis of the composite. XRD shows that the crystalline structure ofK$_4$[W(CN)$_8$] · 2H$_2$O has been retained in the composite. Thermogravimetric analysis data confirm the higher thermal stability of the composite in comparison with pure polythiophene, thus allowing it to be used as a promising material for high-temperature application purposes. Dielectric studies reveal that the dielectric constant and ac-conductivity of the compositeincreased by several orders of magnitude as compared with pure polythiophene at all frequencies, thus showing that thematerial can be used for various applications in the fields of charge storage devices and high-frequency device applications,and can also serve as a potential candidate for solar cell applications.

【 授权许可】

CC BY