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EDOT Based Terpolymers: Facile Synthesis via Direct C‐H Arylation and Barrier Layer in Dye Sensitized Solar Cells
Author(s) -
Panigrahi Pranshula,
Mallick Manoj K.,
Mohanty Smita,
Nayak Sanjay K.,
Palai Akshaya K.
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202001653
Subject(s) - materials science , gel permeation chromatography , cyclic voltammetry , polymer , fourier transform infrared spectroscopy , dye sensitized solar cell , alkyl , spectroscopy , photochemistry , ultraviolet visible spectroscopy , solubility , polymer chemistry , nuclear chemistry , chemical engineering , chemistry , organic chemistry , electrochemistry , electrode , physics , quantum mechanics , composite material , engineering , electrolyte
Abstract We report the synthesis and characterization of three 3,4‐ethylene dioxythiophene (EDOT) based terpolymers. The polymers were synthesized in excellent yield via direct C−H arylation reaction between EDOT, 9,9‐di‐(2’‐ethylhexyl)‐2,7‐dibromofluorene and 1,3‐dibromo‐7‐ tert ‐butylpyrene. The solubility of these terpolymers in common organic solvents has been facilitated by the presence of alkyl side chains. The synthesized polymers have been characterized through gel permeation chromatography, 1 H‐Nuclear Magnetic Resonance ( 1 H‐NMR), Fourier transform infrared spectroscopy (FT‐IR), Ultraviolet‐visible spectroscopy (UV‐Vis), and fluorescence spectroscopy. The polymers show optical band gaps in the range of 2.06 ‐ 2.17 eV and HOMO levels of −4.71 eV to −4.70 eV relative to vacuum as determined by UV visible and Cyclic Voltammetry respectively. Dye‐sensitized solar cells (DSSC) using selected terpolymer ( TP‐1 ) as a barrier layer have been fabricated and enhancement in photovoltaic properties was evaluated.