Thiophene or Pyridine-Substituted Quinoline Derivatives: Synthesis, Properties, and Electropolymerization for Energy Storage

Abstract

Designing novel electropolymerizable monomers is essential in developing electron donor-electron acceptor (D-A) type conjugated polymers for applications in sensing, catalysis, and energy storage. Thiophene and pyridine-substituted quinoline-based molecules (Th-Q, DTh-Q, and Py-Q) are synthesized in this work, and their crystal structures, optical properties, and electrochemical properties are investigated. The potentiostatic electropolymerization of these molecules are successfully carried out on carbon cloth substrate, with the thiophene and quinoline as the possible electropolymerizable units. The PTh-Q shows the best charge storage performance ( 1.12 × 10 − 3 C at 0.02 mA cm-2 in the potential range of 0-1 V) in 0.1 M Na2SO4, and maintains 77% of the initial capacity after 3000 charge-discharge cycles at 0.02 mA cm-2. The morphology and structure of the PTh-Q does not alter significantly after the repetitive charge-discharge cycling. The superior charge storage performance of the PTh-Q than PDTh-Q and PPy-Q is originated from the exposed highest amount of electrochemically active sites and the participation of redox processes of both hydroxyl/ketone structures on quinoline and thiophene groups.

Nano‐sized Co(II), Ni(II), and Zr(IV) complexes of quinaldine‐based azo dye for promising therapeutic and catalytic applications: Synthesis, characterization, density functional theory studies and molecular docking

“…The infrared spectra between 4000 and 400 cm À1 are captured by a Perkin-Elmer 1430 IR spectrometer applying KBr disc technique. 1 H NMR spectral measurement was recorded (in DMSO-d 6 ) at room temperature utilizing a DELTA2 NMR spectrometer (500 MHz). On direct inlet section of the mass analyzer, the electron impact mass spectra are measured in the thermal scientific GCMS-type ISQ in RCMB, Al-Azhar University, Cairo, Egypt.…”

“…Quinoline-based compounds have drawn considerable interest as a result of their interesting optical and electrical characteristics, in addition to their great applications in energy storage. [1][2][3][4][5] The electrical conductivities of quinoline derivatives have attracted significant interest, because of their important industrial applications, analytical uses, and physiological activity. 6 Quinaldine is one of the most important quinoline derivatives.…”

Synthesis, Photophysical Properties, Theoretical Studies, and Living Cancer Cell Imaging Applications of New 7-(Diethylamino)quinolone Chalcones

“…The electrochemical Eg values obtained are much lower than those estimated by spectroscopy; possibly, this difference is due to the influence of the solvent and the supporting electrolyte in the charge transfer process determined by cyclic voltammetry. 69 2.9. Cell Viability.…”