Synthesis of selenophene substituted benzodithiophene and fluorinated benzothiadiazole based conjugated polymers for organic solar cell applications

Electrochemical copolymerization of 3,4-ethylenedioxythiophene and dithienothiophene: influence of feed ratio on electrical, optical and electrochromic properties

“…[1][2][3][4] They have been widely used in organic solar cells, energy storage, chemical sensors, electrochromic devices, organic light-emitting diodes, actuators, eld effect transistors and so forth. [5][6][7][8][9][10][11] Synthesis of new monomer units is a common approach for the modication of chemical and physical properties of conjugated polymers such as solubility, stability, optical and electrical, etc., but it requires multi-step synthesis, time-consuming and costly process. Alternatively, various types of conjugated polymers, such as copolymer, donor-acceptor, block, end-group functional polymers, etc., have been designed and synthesized to achieve desirable chemical and physical properties for organic electronic applications.…”

Effect of Chalcogen Incorporation and Rigidification on the Photovoltaic Properties of Simple Arylamine‐Based D‐π‐A Push–Pull Molecular Systems

“…Jointly, the substitution of the thiophene connector by a selenophene was also considered since it was demonstrated to induce a red and hyperchromic shift of the main visible centered absorption band of similar push‐pull based molecular donors [18] . Moreover, the larger and more polarizable orbitals of selenium were also demonstrated to facilitate intermolecular interactions, thereby improving charge transport in solid state [19–23] …”

“…[18] Moreover, the larger and more polarizable orbitals of selenium were also demonstrated to facilitate intermolecular interactions, thereby improving charge transport in solid state. [19][20][21][22][23] Hence, the combination of both strategies results in the preparation, characterization of three new molecules, namely Cz-T-DCV, DMA-Se-DCV and Cz-Se-DCV, that will be compared to the referent DMA-T-DCV to rationalize the structure property relationships.…”

Structure-Electrochemical Property Relationship of F vs 2F Substituents in Low Bandgap Conjugated Polymers

“…Moreover, computational studies revealed that torsional angle is lower for 2F substituted polymers compared to F substituted polymers. 27 This means that difluorination enhance better planarity and chain packing resulting to the improved charge transport. Although effect of number of F atoms on electrochemical and OSC performance was studied in the literature, 28,29 its' effect on the electrochemical energy storage behavior and capacitance value of fluorinated acceptor containing CPs has not been investigated to best our knowledge.…”

“…Moreover, better planarity and improved chain packing due to increased number of F atom could cause to better charge transport in P2. 27,40 P1 and P2 were compared with different CPs in terms of area specific capacitance in Table I. GCD curves were also used to calculate power density (P) and energy density (E) values shown in Fig.…”