Unknown

Dataset Information

0

The Effect of ?-Branched Side Chains on the Structural and Opto-Electronic Properties of Poly(Diketopyrrolopyrrole-alt-Terthiophene).

ABSTRACT: Introducing solubilizing ?-branched alkyl chains on a poly(diketopyrrolopyrrole-alt-terthiophene) results in a dramatic change of the structural, optical, and electronic properties compared to the isomeric polymer carrying ?-branched alkyl side chains. When branched at the ?-position the alkyl substituent creates a steric hindrance that reduces the tendency of the polymer to ?-? stack and endows the material with a much higher solubility in common organic solvents. The wider ?-? stacking and reduced tendency to crystallize, evidenced from grazing-incidence wide-angle X-ray scattering, result in a wider optical band gap in the solid state. In solar cells with a fullerene acceptor, the ?-branched isomer affords a higher open-circuit voltage, but an overall lower power conversion efficiency as a result of a too well-mixed nanomorphology. Due its reduced ?-? stacking, the ?-branched isomer fluoresces and affords near-infrared light-emitting diodes emitting at 820?nm.

SUBMITTER: Saes BWH 

PROVIDER: S-EPMC7702133 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

The Effect of α-Branched Side Chains on the Structural and Opto-Electronic Properties of Poly(Diketopyrrolopyrrole-alt-Terthiophene).

Saes Bart W H BWH   Wienk Martijn M MM   Janssen René A J RAJ  

Chemistry (Weinheim an der Bergstrasse, Germany) 20200929 62

Introducing solubilizing α-branched alkyl chains on a poly(diketopyrrolopyrrole-alt-terthiophene) results in a dramatic change of the structural, optical, and electronic properties compared to the isomeric polymer carrying β-branched alkyl side chains. When branched at the α-position the alkyl substituent creates a steric hindrance that reduces the tendency of the polymer to π-π stack and endows the material with a much higher solubility in common organic solvents. The wider π-π stacking and red  ...[more]

Similar Datasets

Unknown Polymorphism of a semi-crystalline diketopyrrolopyrrole-terthiophene polymer.
| S-EPMC8246555 | biostudies-literature
Unknown Tuning the Optical Characteristics of Diketopyrrolopyrrole Molecules in the Solid State by Alkyl Side Chains.
| S-EPMC7682139 | biostudies-literature
Unknown Synthesis and Photophysical and Electroluminescent Properties of Poly(1,4-phenylene-ethynylene)-<i>alt</i>-poly(1,4-phenylene-vinylene)s with Various Dissymmetric Substitution of Alkoxy Side Chains.
| S-EPMC4730230 | biostudies-literature
Unknown Well-defined Poly(lactic acid)s Containing Poly(ethylene glycol) Side-chains.
| S-EPMC3263433 | biostudies-literature
Unknown Synthesis of diketopyrrolopyrrole-based polymers with polydimethylsiloxane side chains and their application in organic field-effect transistors.
| S-EPMC5882725 | biostudies-literature
Unknown Diketopyrrolopyrrole-Based Conjugated Polymer Entailing Triethylene Glycols as Side Chains with High Thin-Film Charge Mobility without Post-Treatments.
| S-EPMC5566237 | biostudies-literature
Unknown Carbazole and Diketopyrrolopyrrole-Based D-A π-Conjugated Oligomers Accessed via Direct C–H Arylation for Opto-Electronic Property and Performance Study
| S-EPMC9781591 | biostudies-literature
Unknown A Dual Functional Diketopyrrolopyrrole-Based Conjugated Polymer as Single Component Semiconducting Photoresist by Appending Azide Groups in the Side Chains.
| S-EPMC9130897 | biostudies-literature
Unknown Structure-odor relationships of α-santalol derivatives with modified side chains.
| S-EPMC6268821 | biostudies-literature
Unknown Impact of Side Chains of Conjugated Polymers on Electronic Structure: A Case Study.
| S-EPMC6572471 | biostudies-literature