Synthesis and Spectroscopic Properties of Conducting Polymer Polyaniline (ES)

摘要

Polyaniline (PANI) was synthesized in Emaraldine salt form by the chemical oxidation method by using Ammonium persulfate (APS) as an oxidizing factor. The XRD pattern refer to that PANI is an amorphous nature with d-spacing 4.34 ?. The FE-SEM images show that the thin film of polyaniline at 500nm shows that is highly micro-porous. Similarly, the UV-Visible spectra of this polymer refer to two absorption peak at around 426nm and 805nm. These absorption bands are attributed to the transitions phase of π → π* and Benzenoid to Quinoid respectively. The FT-IR spectrum of PANI shows strong bands representing the surface bondings of PANI and their vibration modes were also observed. PL photo-luminescent spectra of conducting Polyaniline (ES) , one peak shows a broad spectrum with a maximum intensity at around 537nm, and the band gap energy at 2.3ev corresponds to the emission of polyaniline at solid state.