Microscopic, spectroscopic, and electrochemical characterization of novel semicrystalline poly(3-hexylthiophene)-based dendritic star copolymer

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dc.contributor.authorYonkeu, Anne L. Djoumessi
dc.contributor.authorNdipingwi, Miranda M.
dc.contributor.authorTovide, Oluwakemi O.
dc.date.accessioned2023-02-10T11:17:11Z
dc.date.available2023-02-10T11:17:11Z
dc.date.issued2022
dc.description.abstract: In this study, electron-donating semicrystalline generation 1 poly(propylene thiophenoimine)- co-poly(3-hexylthiophene) star copolymer, G1PPT-co-P3HT was chemically prepared for the first time. Copolymerization was achieved with high molecular weight via facile green oxidative reaction. 1H NMR analyses of the star copolymer demonstrated the presence of 84% regioregular (rr) head-to-tail (HT) P3HT, which accounts for the molecular ordering in some grain regions in the macromolecule’s morphology, as revealed by the high-resolution scanning electron microscopy (HRSEM) and Selected Area Electron Diffraction (SAED) images, and X-ray diffraction spectroscopy (XRD) measurements. The star copolymer also exhibited good absorption properties in the ultraviolet-visible (UV-Vis) and the near infrared (NIR) spectral regions, which give rise to an optical energy bandgap value as low as 1.43 eV. A HOMO energy level at −5.53 eV, which is below the air-oxidation threshold, was obtained by cyclic voltammetry (CV). Electrochemical impedance spectroscopy (EIS) ascertained the semiconducting properties of the macromolecule, which is characterized by a charge transfer resistance, Rct, value of 3.57 kΩ and a Bode plot-phase angle value of 75◦ .en_US
dc.identifier.citationYonkeu, A. L. D. et al. (2022). Microscopic, spectroscopic, and electrochemical characterization of novel semicrystalline poly(3-hexylthiophene)-based dendritic star copolymer. Polymers 2022, 14(20), 4400. https://doi.org/10.3390/polym14204400en_US
dc.identifier.issn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym14204400
dc.identifier.urihttp://hdl.handle.net/10566/8410
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectOxidative copolymerizationen_US
dc.subjectOganic photovoltaicsen_US
dc.subjectChemistryen_US
dc.subjectSemiconductoren_US
dc.titleMicroscopic, spectroscopic, and electrochemical characterization of novel semicrystalline poly(3-hexylthiophene)-based dendritic star copolymeren_US
dc.typeArticleen_US

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