Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
J Am Chem Soc. 2013 Nov 27;135(47):17703-6. doi: 10.1021/ja4095395. Epub 2013 Nov 18.
We report the concise synthesis of a symmetrical monomer that provides a head-to-head pyridine building block for the preparation of cationic conjugated polymers. The obtained poly(pyridinium-phenylene) polymers display appealing properties such as high electron affinity, charge-transport upon n-doping, and optical response to electron-donating analytes. A simple assay for the optical detection of low micromolar amounts of a variety of analytes in aqueous solution was developed. In particular, caffeine could be measured at a 25 μM detection limit. The reported polymers are also suitable for layer-by-layer film formation.
我们报告了一种对称单体的简洁合成方法，该单体为制备阳离子共轭聚合物提供了头对头的吡啶砌块。所得到的聚（吡啶-亚苯基）聚合物具有吸引人的性质，如高电子亲和力、n 掺杂时的电荷输运以及对供电子分析物的光学响应。开发了一种简单的测定方法，可用于在水溶液中光学检测各种分析物的低微摩尔浓度。特别是，可以以 25 μM 的检测限测量咖啡因。所报道的聚合物也适用于逐层成膜。
