A polyene-based polymer functionalized with a model of [FeFe]-hydrogenase and film electrodes assemb
A polyene-based polymer functionalized with a model of [FeFe]-hydrogenase and film electrodes assemb
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DOI：
10.1016/j.ijhydene.2011.05.095
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发表时间：
2011-08
期刊：
影响因子：
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通讯作者：
Xiaoming Liu;Xiang Ru;Y. Li;Kaka Zhang;Daoyong Chen
中科院分区：
文献类型：
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作者：
Xiaoming Liu;Xiang Ru;Y. Li;Kaka Zhang;Daoyong Chen
在WCl6-SnPh4催化下聚合了一种具有炔基的二铁六羰基配合物，作为[FeFe]氢化酶二铁亚基的模型配合物。采用FTIR、NMR、SEM、TEM和TGA等技术对以顺式结构为主的{Fe2(CO)6}基官能化聚合物（Poly-{Fe2}）进行了表征。通过对单体的修饰，可以调整聚合物的性质，如溶解度，并且可以在不影响溶解度的情况下获得更大的分子量，使用静态光散射技术估计其分子量为7.93 × 105g mol−1。用多壁碳纳米管（MWCNTs）或不加多壁碳纳米管（MWCNTs）将功能化聚合物自旋涂覆在玻璃体碳电极表面，产生具有电化学响应的膜电极。在膜中加入MWCNTs可以显著提高电化学响应，这可能是由于掺杂MWCNTs后不仅提高了膜的导电性，而且增加了膜的有效表面积。
A diiron hexacarbonyl complex possessing an alkynyl group as a model complex of the diiron sub-unit of [FeFe]-hydrogenase was polymerized under the catalysis of WCl6-SnPh4. The polymer (Poly-{Fe2}) functionalized with {Fe2(CO)6} units which is dominated by cis-form was fully characterised using FTIR, NMR, SEM, TEM, and TGA techniques. Through modifying the monomer, the properties, for example, solubility, of the resultant polymer could be tuned and much larger molecule weight, which was estimated as 7.93 × 105g mol−1using static light scattering technique was achieved without compromising its solubility. Spin-coating the functionalized polymer onto the surface of vitreous carbon electrode with or without multi-wall carbon nanotubes (MWCNTs) produced film electrodes which show electrochemical responses. Adding MWCNTs into the film enhances significantly the electrochemical response probably via not only improving the conductivity of the film, but also the increase in its effective surface area after being doped with MWCNTs.