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F. Würthner and team investigate the suitability of twenty dipolar merocyanine dyes as active layer in organic thin‐film transistors on page 44. While the device performance varies significantly up to 0.18 cm2 V−1 s−1, it is shown that a good performance of some dyes occurs when they exhibit a high ground state dipole moment and well‐defined sterics, resulting in a beneficial brickwork‐type packing...
Organic thin film transistors (OTFTs) of a series of twenty dipolar donor–acceptor‐substituted polymethine dyes (D–A dyes, dipole moments from 3–15 D) are investigated. The employed merocyanine dyes contain a dimethine bridge that is substituted with 1‐alkyl‐3,3‐dimethylindolin‐2‐ylidene (“Fischer base”), 3‐alkyl‐2,3‐dihydrobenzothiazol‐2‐ylidene or 1,3‐benzodithiole‐2‐ylidene, respectively, as electron‐donating...
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