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Dong Wang and Tsuyoshi Michinobu One-step synthesis of ladder-type fused poly(benzopentalene) derivatives with tunable energy levels by variable substituents Journal of Polymer Science Part A: Polymer Chemistry 49

Article first published online: 18 NOV 2010 | DOI: 10.1002/pola.24419

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Novel ladder-type conjugated polymers, fused poly(benzopentalene) derivatives, were successfully synthesized from the readily accessible 1,4-dibromo-2,5-diethynylbenzene derivatives by the Pd catalyzed self-polycondensation in one-step with high yields. The variable polymer energy levels and high solubility were achieved by the introduction of suitable substituents, and when the dialkylanilino (DAA) groups were used, the almost defect-free structure of the ladder-type polymers was confirmed by the quantitative tetracyanoethylene (TCNE) addition to the DAA-activated alkynes.

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