A novel synthesis of (3,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-9-(4-vinylbenzyl)-9H-carbazole), alternating polymer formation, characterization, and capacitance measurements

摘要: In this work, (3,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-9-(4-vinylbenzyl)-9H-carbazole) (EDOTVBCz) comonomer was chemically synthesized and characterized by Fourier transform infrared (FTIR), proton nuclear magnetic resonance, carbon resonance spectroscopy. EDOTVBCz electrocoated on glassy electrode (GCE) in various initial molar concentrations ([EDOTVBCz]0 = 1.0, 1.5, 2.0, 3.0) 0.1 M lithium perchlorate (LiClO4)/acetonitrile (CH3CN). P(EDOTVBCz)/GCE cyclic voltammetry, FTIR reflectance-attenuated total reflection spectroscopy, scanning electron microscopy–energy dispersive X-ray analysis, atomic force microscopy, electrochemical impedance spectroscopy (EIS). EIS used to determine the capacitive behaviors of modified GCE via Nyquist, Bode magnitude, phase, admittance plots. The highest low-frequency capacitance value obtained as C LF = ∼2.35 mF cm−2 for [EDOTVBCz]0 = 3.0 mM. Double-layer polymer/electrolyte system calculated dl = ∼2.78 mF cm−2 [EDOTVBCz]0 = 1.0 3.0 mM. maximum phase angle θ = ∼76.7o [EDOTVBCz]0 = 1.0, 3.0 mM at frequency 20.6 Hz. AC spectra P(EDOTVBCz)/LiClO4/CH3CN performing electrical equivalent circuit model R(Q(R(CR))) with linear Kramers–Kronig test.