Journal
SYNTHETIC METALS
Volume 284, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2022.117007
Keywords
Diketopyrrolopyrrole (DPP); Hydrogen bonding; Electron transporting property
Funding
- Fujikura Foundation, Japan
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Judicious utilization of hydrogen bonding in diketopyrrolopyrroles allows smooth carrier transfer in organic semiconducting materials. The study demonstrates the formation of a hydrogen-bonded dimer structure in the solid state, which is suitable for carrier-transport pathway.
Judicious utilization of hydrogen bonding in diketopyrrolopyrroles (DPPs) could allow smooth carrier transfer when applied to organic semiconducting materials. In this study, we determined the association constants of dimerization by hydrogen bonding for a mono-alkylated DPP in the solution state to obtain basic insights that could aid in the utilization of hydrogen bonding. The IR spectroscopy, thermal analysis, and X-ray diffractometry results demonstrate that the hydrogen-bonded dimer structure was preferentially formed in the solid state. Electron transporting properties was only observed in the DPP derivatives, forming the hydrogen-bonded dimer structure, indicating the formation of a film morphology suitable for carrier-transport pathway.
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