P3HT:VOPcPhO composite nanorods arrays fabricated via template–assisted method: Enhancement on the structural and optical properties

• Fabricate the poly (3-hexylthiophene-2,5-diyl) (P3HT) and vanadyl 2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine (VOPcPhO) composite nanorods via template-assisted method.
• Structural and optical properties of P3HT:VOPcPhO composite can be enhanced by means of nanorods structure.
• We report the structural and optical properties of P3HT:VOPcPhO composite nanorods.

In this study, the fabrication of poly(3-hexylthiophene-2,5-diyl) (P3HT) and vanadyl 2,9,16,23-tetraphenoxy-29H,31H phthalocyanine (VOPcPhO) composite nanorods is reported. P3HT:VOPcPhO composite nanorods have been synthesised from the solution concentration of 5 mg/ml via the template-assisted method. TEM images show that P3HT nanotube was first produced which has led to the infiltration of VOPcPhO. The composite nanorods have replicated the porous diameter of template of ~200 nm. If compared to the P3HT:VOPcPhO composite thin film, UV–vis spectrum of composite nanorods shows a wider band absorption and the peak absorption was shifted to the longer wavelength, which could be due to the improved interaction between small molecules and P3HT segment at their interfaces. The better absorption that portrayed by composite nanorods was supported by the quenching of intense peak in photoluminescence spectrum. Owing to the quenching, the photo-induced charge transfer and charge carrier dissociation in the composite nanorods is pragmatic.