A new class of oligothiophenes is realized by replacing the conventional linear structure with a branched benzo[b]thiophene‐based structure (see Figure). These compounds are used as active materials in light‐emitting diodes exhibiting record luminances up to 10 500 cd m–2 (see inset). Optical measurements and theoretical calculations show these performances are mainly to the distorted molecular structure.
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Mazzeo et al. (2003) studied this question.
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