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Updated: Apr 18, 2026

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Difluorinated 6,13-Bis(triisopropylsilylethynyl)pentacene: Synthesis, Crystallinity, and Charge-Transport Properties
Chang-Hyun Kim1, Htay Hlaing, Marcia M Payne
1LPICM, Ecole Polytechnique, CNRS, 91128 Palaiseau (France); Current address: School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712 (Republic of Korea). chang-hyun.kim@polytechnique.edu.
Abstract:
Fluorination has been demonstrated to improve stability and processing in thiophene-containing small-molecule semiconductors. Here, the impact of partial fluorination on these parameters in a pentacene derivative is examined. Although the improvement in photostability is not as dramatic, there is a clear improvement in the stability of the chromophore upon fluorination. The improvement in processability is more dramatic; devices formed by spin-coating with the fluorinated derivative perform substantially better than those formed from the nonfluorinated compound.
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