Functionalized polythiophene for corrosion inhibition and photovoltaic application

Abstract

Conjugated polymers are encouraging substitute for creating clean and renewable energy for photoinduced charge generation and transport media in polymer solar cells (PSCs). Successful synthesis of a new solution processable n‐type polythiophene based π‐conjugated polymer (P3HT‐CN) is done where polythiophene units are substituted by cyano groups through post functionalization approach of synthesized P3HT which is cheap, stable, easily prepared, and inert against ambient conditions and is expected to be a competitive candidate for the acceptor material in non fullerene acceptors (NFAs) PSCs against fullerene derivative and used as the highly efficient active layer in the bulk heterojunction (BHJ) which increase the donor‐acceptor interfacial area through controlling the phase separation indicating device structure ITO/PEDOT:PSS/P3HT:P3HT‐CN/Al. Photovoltaic measurement of this PSCs device based on P3HT:P3HT‐CN demonstrate the PCE of 0.008% with an increased short circuit current density (Jsc) of 0.11 mA cm−2. The thermal, optical, and electrochemical properties are examined in detail showing high thermal stability, absorbance in the visible part of the solar spectrum, higher charge carrier mobility, and also mixed type corrosion inhibitive behavior with 90 and 78% inhibitor efficiency for P3HT and P3HT‐CN, respectively, built this class of material as smart which can be used for many other applications.

Functionalization of Conductive Polymers through Covalent Postmodification

“…The –NH 2 group is then converted to diazonium ion (–N 2 + ) through reaction with nitrite. Then, using Sandmeyer’s reaction, the diazonium ion is substituted with –CN using copper (I) cyanide [ 144 ]. PT functionalization through electrophilic bromination was also explored.…”

Synthesis and Reactivities of Conducting Hexathienylbenzene-Co-Poly(3-Hexylthiophene) Star-Branched Copolymer as Donor Material for Organic Photovoltaic Cell

“…The 1 H-NMR spectrum of HTB-co-P3HT (Figure 1C) is very different in appearance from that of HTB. The signal at 0.88 ppm is assigned to the CH 3 -of the hexyl group, the multiplets at 1.28-1.56 ppm and 2.57-2.80 ppm are attributed to the methylene protons from the hexyl group while the thiophene groups are signaled at 7.01 ppm (Mota et al, 2021;Yadav et al, 2021).…”

Investigating the corrosion inhibition of copper using DFT theoretical study with three organic molecules

“…As suggested by Bockris and Swinkels [8], this inhibition is caused by the great affinity of sulfur atom to the metal and it is easily adsorbed on the metal surface by removing the water molecules readily existing on that surface. Thiophenes and related compounds containing functional electronegative groups such as nitrile group and π-electrons in triple or conjugated double bonds are usually good inhibitors [9]. For example, a new benzothiophene-3-carbonitrile derivative has been reported as an effective copper corrosion inhibitor in hydrochloric acid.…”