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A High-Throughput Screening Approach for the Optoelectronic Properties of Conjugated Polymers

submitted on 25.04.2018, 12:40 and posted on 25.04.2018, 13:36 by Liam Wilbraham, Enrico Berardo, Lukas Turcani, Kim Jelfs, Martijn Zwijnenburg

We propose a general high-throughput computational screening approach for the optical and electronic properties of conjugated polymers. This approach makes use of the recently developed xTB family of low-computational-cost density functional tight-binding methods from Grimme and co-workers, calibrated here to (TD-)DFT data computed for a representative diverse set of (co-)polymers. Parameters drawn from the resulting calibration using a linear model can then be applied to the xTB derived results for new polymers, thus generating near DFT-quality data with orders of magnitude reduction in computational cost. As a result, after an initial computational investment for calibration, this approach can be used to quickly and accurately screen on the order of thousands of polymers for target applications. We also demonstrate that the (opto)electronic properties of the conjugated polymers show only a very minor variation when considering different conformers and that the results of high-throughput screening are therefore expected to be relatively insensitive with respect to the conformer search methodology applied.


EPSRC (EP/N004884/1, EP/M017257/1 and EP/P005543/1), ERC (ERC-StG-PE5-CoMMaD) and the Royal Societry)


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University College London


United Kingdom

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Declaration of Conflict of Interest

no conflict of interest