Publication: Synthesis, structural characterization, therotical and electrical properties of novel sulpho-coumarin based methacrylate polymer
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Date
2022-05-01
Authors
ÖZDEMİR, MÜCAHİT
GÖRGÜLÜ, AHMET ORHAN
YALÇIN, BAHATTİN
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Abstract
© 2022, The Polymer Society, Taipei.In this study, a new coumarin-based methacrylate monomer was synthesized and its homopolymer P(SCou) was prepared by free radical polymerization method. The structural characterization of the compounds was performed by using FT-IR, 1H and 13C-NMR spectroscopic techniques. The thermal behavior of the polymer was investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) methods. Thermal decomposition kinetics were investigated with TGA results at different heating rates by non-isothermal method. Thermal decomposition activation energy of homopolymer was calculated according to Flynn–Wall–Ozawa in the 5%-50% conversion range. The average activation energy of P(SCou) was found to be 220.21 kJ/mol. Theoretical calculations were done with Gaussian and the results were visualized with GaussView 5.0 and IQMol. Geometry optimizations of sulfocoumarin monomer and polymer were calculated with Becke-3-Lee–Yang–Parr’s functional correlation (B3LYP). Optical band gaps for sulfonyl coumarin-(SCou), its monomer SCou-MA and P(SCou) compounds are 3.615, 3.723 and 3.792 eV, respectively. The dielectric properties of the polymer were investigated as a function of frequency and temperature in the frequency range of 1–200 kHz. Also, a heterojunction Shotky diode of the polymer was prepared on a p-type Si substrate using the thin-film technique. The I-V characteristic of the polymer/p-Si thin film heterojunction diode was determined between ± 4 V and the various illumination intensities. The device has displayed good rectification behavior proving the creation of Schottky junction. The ideality factor was determined as 3.71, and the reverse supply current was determined as 8.78 × 10–5 A.
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Keywords
Kimya, Temel Bilimler, Chemistry, Natural Sciences, Temel Bilimler (SCI), Doğa Bilimleri Genel, ÇOK DİSİPLİNLİ BİLİMLER, Natural Sciences (SCI), NATURAL SCIENCES, GENERAL, CHEMISTRY, MULTIDISCIPLINARY SCIENCES, Multidisciplinary, Chemistry (miscellaneous), General Chemistry, Physical Sciences, Coumarin, Homopolymer, Therotical properties, Electrical properties, Diode, NONLINEAR-OPTICAL-PROPERTIES, DIELECTRIC-PROPERTIES, 4-HYDROXY COUMARIN, SOLAR-CELLS, DYES, MOLECULE, BEHAVIOR, LAYER, DARK, Coumarin, Homopolymer, Therotical properties, Electrical properties, Diode
Citation
ÖZDEMİR M., Biryan F., Koran K., YALÇIN B., GÖRGÜLÜ A. O., "Synthesis, structural characterization, therotical and electrical properties of novel sulpho-coumarin based methacrylate polymer", Journal of Polymer Research, cilt.29, sa.5, 2022