Pyrene-1-sulfonic acid sodium salt (PyS) was chemically synthesized, and its polymer film, poly (pyrene-1-sulfonic acid sodium salt) (PPyS), was successfully electropolymerized by direct anodic oxidation both in aqueous and boron trifluoride diethyl etherate (BFEE) systems. The PPyS films showed good redox activity and structural stability even in SA. The impedance spectra of PPyS films indicated that the electron transfer resistance was about 23 Ω. The fluorescent result exhibited that the emission band of PPyS was red-shifed at least 76 nm in comparison with the monomer. Both the impedance and the fluorescent spectra demonstrated that the PPyS films were good semiconducting polymer and excellent blue-light-emitting materials, respectively.

A novel conducting poly (N-phenyl-2-naphthylamine) (PPBNA) film was successfully electropolymerized by direct anodic oxidation of its monomer N-phenyl-2-naphthylamine in boron trifluoride diethyl etherate. The prepared PPBNA films showed good redox activity and structural stability even in concentrated sulfuric acid. The impedance spectra of PPBNA films demonstrated that the electron transfer resistance was around 80 Ω. The fluorescent results indicated that the emission band of PPBNA was red-shifted about 30 nm in comparison with that of the monomer. The fluorescent spectra exhibited that the monomer and PPBNA films were excellent blue-light-emitting and blue-green-light-emitting material, respectively.

Semiconducting polytriphenylene (PTP), a bright blue-green-light emitter, with good electrochemical behavior, excellent thermal stability, and the electrical conductivity of 10−3 S cm−1 was synthesized successfully by direct anodic oxidation of triphenylene (TP) in different media. The oxidation potential onset of TP in boron trifluoride diethyl etherate containing 3% concentrated sulfuric acid (SA) was reduced to 0.94 V, compared with other electrolyte media. The possible structure of the obtained PTP was investigated by ultraviolet−visible spectroscopy, Fourier transform infrared spectroscopy, and 1D and 2D NMR techniques, respectively. The results showed that the PTP was grown via the coupling of the monomer mainly at the meta position of the benzene ring in TP. Fluorescence spectra indicated that the electrochemically polymerized PTP was an excellent blue-green-light-emitting material with fluorescence quantum yield as high as 0.43. In addition, the morphology and thermal stability of the polymers were also explored by means of scanning electron microscopy and thermal analyzer. The average molecular weight (19 980 g mol−1) and its polydispersity of dedoped PTP were determined by gel permeation chromatography.