A 3‐Fluoro‐4‐hexylthiophene‐Based Wide Bandgap Donor Polymer for 10.9% Efficiency Eco‐Friendly Nonfullerene Organic Solar Cells

Small 2019, 15, 1805321 The authors regret that certain errors appear in their manuscript, which could affect the interpretation of their results. The corrected sections now appear here: The authors wish it to be noted that the introduction of fluorine and a hexyl chain on the same thiophene ring was previously reported by Jean Roncali and co-workers.[1] Therefore, in the introduction on page 2 of the manuscript, Ref. [41][2] should be modified to Ref. [71].[1] The authors also wish to further clarify the modifications made to the synthesis process described in the Supporting Information: To enhance the yield of 3-fluoro-4-hexylthiophene-2,5-diyl)bis(trimethylsilane) (3), NFSI was added dropwise which dissolved more efficiently in THF (1.64 M). In addition, monomer (2) was more dilute (0.36 M) than the originally reported method (1.03 M). As a result, the yield of 3% (before dilution; portion-wise) increased to 58% (after dilution; drop-wise).[1] In the synthesis of 2,5-dibromo-3-fluoro-4-hexylthiophene (M1), the bromination reactant was changed from bromine to NBS to improve the difficulty of operation and purification of monomer (M1) with a high yield over 98% (in the case of bromine, the yield was under 30% owing to factors such as by-product, and processing loss).[1] The authors apologize for any misinterpretation these errors may have caused. [1] F. Gohier, P. Frére, J. Roncali, J. Org. Chem. 2013, 78, 1497. [2] K. Nakabayashi, H. Otani, H. Mori, Polym. J. 2015, 47, 617.