Diketopyrrolopyrrole-Based Two-Dimensional Poly(Arylene Vinylene)s with High Charge Carrier Mobility
Researchers from the Max Planck Institute of Microstructure Physics, Technische Universität Dresden, the Max Planck Institute for Polymer Research, and collaborating institutions have developed a new class of donor-acceptor two-dimensional conjugated polymers with record-high charge carrier mobility and ultranarrow band gaps. The work establishes diketopyrrolopyrrole (DPP)-based two-dimensional poly(arylene vinylene)s as high-performance organic semiconductors.
Performance of two-dimensional conjugated polymers is often limited by insufficient in-plane conjugation and poor charge transport. Guided by density functional theory, the team designed planar polymer frameworks in which thienyl-benzodithiophene donor units are linked to DPP acceptors via trans-vinylene bridges. The materials are predicted to exhibit strongly dispersive electronic bands and intrinsic charge mobilities approaching 2,000 cm2 V−1 s−1. Using a solid-state Aldol-type polycondensation, the researchers synthesized highly crystalline 2D polymers with optical band gaps as low as ~1.0 eV. Ultrafast optical pump-terahertz probe spectroscopy revealed long carrier scattering times of up to 76 fs and room-temperature mobilities reaching ~310 cm2 V−1 s−1, surpassing previously reported values for organic two-dimensional materials. These findings highlight donor-acceptor engineering as a powerful strategy for next-generation organic electronics
The paper entitled "Diketopyrrolopyrrole-Based Two-Dimensional Poly(Arylene Vinylene)s with High Charge Carrier Mobility" by Ruyan Zhao, Hongde Yu, Heng Zhang, Lei Gao, Arafat Hossain Khan, Congxue Liu, Xiaodong Li, Xingyuan Chu, Yubin Fu, Darius Pohl, Angelika Wrzesińska-Lashkova, Eike Brunner, Yana Vaynzof, Hai I. Wang, Mischa Bonn, Thomas Heine, Mingchao Wang, Xinliang Feng can be found at: https://doi.org/10.1038/s41467-026-69061-4
