A novel soluble electroluminescent (EL) material, poly[(4-hexylthiophene-2,5-diyl)(9,9-dihexyl-9H-fluoren-2,7-ylene )(4-hexylthiophene-2,5-diyl)] (PHTDHFHT), with high absolute photoluminescence (PL) quantum efficiency (32 ± 3%) compared with other polythiophene derivatives, was synthesized and a green EL is observed.
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Pei et al. (2000) studied this question.
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