Charge transport enhancement in supramolecular oligothiophene assemblies using Pt(ii) centers as a guide

Abstract

The self-assembly properties of a series of square planar Pt(ii) complexes have been related to their charge transport properties, finding higher mobility values in the complexes placing the Pt centers in closer proximity.

Advances in Efficient Polymerization of Solid-State Trithiophenes for Organic Thermoelectric Thin-Film

“…Trithiophenes containing two 3,4-ethylenedioxythiophene (EDOT) and one thiophene block (BisEDOT-Th) and with different alkyl side chains denoted as BisEDOT-ThR (R = methyl, hexyl, and octyl) as precursor in Scheme were synthesized, and the procedures were recorded in the Supporting Information. The thiophene-based monomers composed of three organic molecules were designed and synthesized because their polymers usually exhibit good electron transport properties in organic electrons. ,− Many efforts have been focused on high-performance polymer film based on the large planar skeleton and smooth morphology of oligomer to improve the electrical properties of polymer films. , Moreover, it has been accepted that the conjugated system is prone to form self-rigidification and planarization owing to the noncovalent interaction of intramolecular between sulfur and oxygen atoms in oligothiophene containing EDOT units . Additionally, the oligomer usually shows a lower oxidation potential compared with its single thiophene-based unit during polymerization, which allows a much easier polymerization and better polymer film with the more superior physical or chemical properties. − One can find the trithiophenes (BisEDOT-Th and BisEDOT-ThR) as precursor having an oxidation potential less than 0.6 V vs Ag/AgCl during electrodeposition in Figure S1, which is significantly lower than thiophene (Th) and EDOT.…”

Advances in organic field-effect transistors based on metal–organic coordination materials and applications

“…Furthermore, the charge carrier transport behaviours of Pt(II) complexes have been probed using the SCLC method. 80–82 For instance, De Cola, Ruiz-Carretero and coworkers in 2019 reported thiophene oligomer-based neutral Pt( ii ) complexes 21a – 21c and integrated them into the SCLC devices. 80 The average μ h values were determined to be ca.…”

“…80–82 For instance, De Cola, Ruiz-Carretero and coworkers in 2019 reported thiophene oligomer-based neutral Pt( ii ) complexes 21a – 21c and integrated them into the SCLC devices. 80 The average μ h values were determined to be ca. 3.5 × 10 −3 , 6.0 × 10 −4 and 1.1 × 10 −3 cm 2 V −1 s −1 for 21a , 21b and 21c , respectively.…”

Copper-Templated Formation of Dihelical Oligothiophene–Phenanthroline Assemblies

“…23 , 24 The presence of π-conjugated bridging segments such as OTs between two metal chelating sites introduces potential for enhanced metal–metal coupling allowing for potential application as switchable devices in molecular electronics. 25 , 26 The majority of devices developed so far are based on ruthenium polypyridyl derivatives 27 , 28 ; however, copper complexes of 2,9-arylated phens showed favorable photophysical properties. 29 , 30 Replacement of less abundant ruthenium by copper was considered to be a less expensive alternative.…”