Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether
Electrodeposition of High-quality Polycarbazole Films in Composite Electrolytes of Boron Trifluoride Diethyl Etherate and Ethyl Ether
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DOI：
10.1007/s10800-006-9151-x
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发表时间：
2006-06
影响因子：
2.9
通讯作者：
G. Nie;Jingkun Xu;Shusheng Zhang;Xuejun Han
中科院分区：
文献类型：
--
作者：
G. Nie;Jingkun Xu;Shusheng Zhang;Xuejun Han
在三氟化硼乙醚（BFEE）溶液中，用电化学方法直接氧化咔唑制备了高质量的聚咔唑（PCZ）薄膜。咔唑在该介质中的氧化电位仅为0.90 V vs. SCE，低于在含有0.1 mol l− 1Bu 4 NBF 4的乙腈中测定的氧化电位（1.35 V vs. SCE）。在此介质中制备的PCZ膜具有较好的电化学性能和热稳定性，电导率为7.5 × 10 - 3S cm-1，比文献报道的高一个数量级，表明BFEE/EE是比乙腈更好的PCZ膜电合成介质.所制备的PCZ薄膜可部分溶解于丙酮、乙腈和四氢呋喃中。光谱分析证明了PCZ链共轭结构的存在。荧光光谱表明，电合成的PCZ是一种理想的蓝光发光材料。
High-quality polycarbazole (PCZ) films were synthesized electrochemically by direct oxidation of carbazole in boron trifluoride diethyl etherate (BFEE) containing vol. 20% ethyl ether (EE). The oxidation potential of carbazole in this medium was measured to be only 0.90 V vs. SCE, which was lower than that determined in acetonitrile containing 0.1 mol l−1Bu4NBF4(1.35 V vs. SCE). PCZ films obtained from this medium showed better electrochemical behavior, better thermal stability with conductivity of 7.5 × 10−3S cm−1being one order of magnitude higher than those reported previously, indicating that BFEE/EE was a better medium than acetonitrile for the electrosyntheses of PCZ films. As-formed PCZ films can be partly dissolved in acetone, acetonitrile and tetrahydrofuran. Spectral analysis provided evidence for the existence of the conjugated structure of the PCZ chain. Fluorescent spectra indicate that electrosynthesized PCZ is an ideal blue light emitter.