Effect of Sb_2S_3 micro-rod incorporation on the polymerization of 3-hexylthiophene

摘要

In this work, in-situ synthesis method has been used for the first time to obtain poly(3-hexylthiophene)-antimony sulfide (P3HT–Sb~(2)S~(3)) composite materials. The Sb~(2)S~(3)micro-rods are synthesized by microwave irradiation at temperature of 170 °C and power of 600 W. Then, P3HT–Sb~(2)S~(3)composites are synthesized by in-situ polymerization of 3-hexylthiophene (3HT) monomers in the presence of different Sb~(2)S~(3)micro-rod concentration (3HT/Sb~(2)S~(3)weight ratio: 1/0.01, 1/0.03, and 1/0.05). The composite products are washed by centrifugation method to reduce the Sb~(2)S~(3)loss in the composite materials. P3HT–Sb~(2)S~(3)composite thin films are formed by spin coating. It is observed that the Sb~(2)S~(3)incorporation in the P3HT polymer matrix increases the optical absorbance, head-to-tail (HT) dyads configuration, thermal stability, decomposition temperature, and photoconductivity of the composite products. Fourier-transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (_(1)H-NMR), and field emission scanning electron microscopy (FESEM) analyses show the Sb~(2)S~(3)presence in the P3HT matrix and a strong interaction between P3HT and Sb~(2)S~(3). The P3HT–Sb~(2)S~(3)composite materials obtained in this work exhibit interesting optoelectronic properties that could be useful for device applications.