Novel Chiral Conducting Poly[N-(9-Fluorenylmethoxycarbonyl)-L-Alanine] (PN9FA) with Good Fluorescence Properties via Electropolymerization

Poly[N-(9-fluorenylmethoxycarbonyl)-L-alanine] (PN9FA) films with good fluorescence properties and chirality were prepared electrochemically by direct anodic oxidation of N-(9-fluorenylmethoxycarbonyl)-L-alanine (N9FA) in boron trifluoride diethyletherate (BFEE). Results of FT-IR spectral measurements indicated that N9FA was probably polymerized through the coupling at the C (2) and C (7) positions. Results of electrochemical measurements of PN9FA showed good redox activity and stability. The fluorescence spectra indicated that PN9FA films were blue-light emitters. In addition, the structures and properties of the monomer and the polymers were characterized and evaluated with cyclic voltammograms (CVs), 1H-NMR, UV-vis spectra (UV), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM).