Abstract A purple emitting monomer, namely 5-(benzo[ d ][1,3]dioxol-5-yl)-2,3-dihydrothieno[3,4- b ][1,4]dioxine (EDOT-MDOB) was synthesized via Stille coupling reaction and was characterized by FT-IR and NMR. The corresponding blue-light-emitting polymer poly(5-(benzo[ d ][1,3]dioxol-5-yl)-2,3-dihydrothieno[3,4- b ] [1,4]dioxine) P(EDOT-MDOB) was prepared with high redox activity and fluorescence quantum yields. Optical band gaps of P(MDOB-EDOT) were determined from the overall absorption and found as 1.59 eV. Smooth and homogeneous P(EDOT-MDOB) remained constant color of dark brown under different applied voltages. Electrochromic switching studies showed that P(EDOT-MDOB) exhibited moderate transmittance with good stability in the visible and near-IR region.

中文翻译：

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荧光和电致变色聚(5-(benzo[ d ][1,3]dioxol-5-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxin)

摘要 一种发紫色光的单体，即 5-(benzo[ d ][1,3]dioxol-5-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxine (EDOT-MDOB)通过 Stille 偶联反应合成，并通过 FT-IR 和 NMR 进行表征。相应的发蓝光的聚合物聚(5-(苯并[d][1,3]二氧戊环-5-基)-2,3-二氢噻吩并[3,4-b][1,4]二恶英)P( EDOT-MDOB) 制备具有高氧化还原活性和荧光量子产率。P(MDOB-EDOT) 的光学带隙由总吸收确定，为 1.59 eV。在不同的施加电压下，光滑均匀的 P(EDOT-MDOB) 保持恒定的深棕色颜色。电致变色开关研究表明，P(EDOT-MDOB) 在可见光和近红外区域表现出适度的透射率和良好的稳定性。