Fluorinated Benzothiadiazole-based polymers with chalcogenophenes for organic field-effect transistors

Copolymers Based on π-Conjugated Asymmetric Naphthalene Diimide Building Blocks: Synthesis, Crystallography, and Structure–Property–Charge Transport/Photovoltaic Correlations

“…Note, the two torsions in each asymmetric structure are identical because of heterocyclic sulfur–oxygen and sulfur–selenium disorder (see cif files). This variation in torsional angles is not surprising and can be attributed to the size of the heteroatom, the electron-donating ability of the heterocycle, and the extent of the D–A communications. , …”

“…This variation in torsional angles is not surprising and can be attributed to the size of the heteroatom, the electron-donating ability of the heterocycle, and the extent of the D−A communications. 50,53 Analysis of the shortest intermolecular distances in the structures described above is also very instructive. The shortest face-to-face intermolecular planar distance of two NDI EH Th2 molecules is 3.54 Å, while substantially closer packing values of 3.45 and 3.40 Å are measured in NDI EH Se2 and NDI EH Fu2, respectively, in line with their enhanced planarity.…”

Tailoring the mechanical properties of benzothiadiazole-based semiconducting polymers through chalcogen atom substitution

“…34 In another work, Sung et al investigated the effect of different chalcogenophene comonomers, including selenophene (Se), on p-conjugated polymers based on cyclopentadithiophene (CDT) as the donor and fluorinated BT as an acceptor. 35 The charge mobility varied from 0.06 to 0.25 cm 2 V À1 s À1 as a consequence of different degrees of crystallinity caused by chalcogen atoms. Comı ´et al reported the synthesis and characterization of D-A copolymers based on alkoxy-functionalized benzothiadiazole unit as the acceptor copolymerized with chalcogenophenes fluorinated and non-fluorinated as donor comonomers.…”

Electrochromic Insight on Electro‐Deposited Copolymers of Push‐Pull Conjugated Systems with 3,4‐Ethylenedioxythiophene (EDOT) and Other Conjugated Units

“…[3,4] Moreover, full color palette including green can be obtained by molecular design. [5,6] Push-pull conjugated polymers have been widely used for various applications such as supercapacitors, [7] displays, [8] light emitting diodes, [9][10] organic solar cells, [11][12] field effect transistors, [13] electrochemical and optical sensors, [14][15][16][17] and so forth.…”