Theoretical and Experimental Study of Different Side Chains on 3,4-Ethylenedioxythiophene and Diketopyrrolopyrrole Derived Polymers: Towards Organic Transistors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Molecular Sciences Année : 2024

Theoretical and Experimental Study of Different Side Chains on 3,4-Ethylenedioxythiophene and Diketopyrrolopyrrole Derived Polymers: Towards Organic Transistors

Shiwei Ren
Wenqing Zhang
  • Fonction : Auteur
Jinyang Chen
  • Fonction : Auteur

Résumé

In this research, two polymers of P1 and P2 based on monomers consisting of thiophene, 3,4-Ethylenedioxythiophene (EDOT) and diketopyrrolopyrrole (DPP) were designed and obtained by Stille coupling polycondensation. The material shows excellent coplanarity and structural regularity due to the fine planarity of DPP itself and the weak non-covalent bonding interactions existing between the three units. Two different lengths of non-conjugated side chains are introduced, which have an effect on the intermolecular chain stacking causing the film absorption to display different characteristic properties. On the other hand, the difference in side chains does not have a significant effect on the thermal stability and the energy levels of the frontier orbitals of the materials, which is related to the fact that the materials both feature extremely high conjugation lengths and specific molecular compositions. Microscopic investigations targeting the side chains provide a contribution to the further design of organic semiconductor materials that meet device requirements. Tests based on organic transistors show a slight difference in conductivity between the two polymers, with P2 having better hole mobility than P1. This study highlights the importance of the impact of side chains on device performance, especially in the field of organic electronics.
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Dates et versions

hal-04400212 , version 1 (17-01-2024)

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Shiwei Ren, Wenqing Zhang, Jinyang Chen, Abderrahim Yassar. Theoretical and Experimental Study of Different Side Chains on 3,4-Ethylenedioxythiophene and Diketopyrrolopyrrole Derived Polymers: Towards Organic Transistors. International Journal of Molecular Sciences, 2024, 25 (2), pp.1099. ⟨10.3390/xxxxx⟩. ⟨hal-04400212⟩
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