含四硫富瓦烯-吡啶结构环蕃的合成及其在离子液中的性质

Synthesis of cyclophane containing TTF-pyridine unit and its properties in ionic liquid

在甲醇钠的作用下,2分子的2,3-二(2'-氰乙基硫基)-6,7-二丁硫基四硫富瓦与2分子的2,6-二(氯甲基)吡啶反应生成四硫富瓦烯-吡啶结构单元的新型环蕃(3)。在离子液中测定了新型环蕃3的电化学性质,并研究了其对金属离子识别的性能。实验结果表明:在离子液中,环蕃中四硫富瓦烯单元更加容易被氧化或还原,而且其紫外吸收也显著增强;同时发现Pb2+对这种新型环蕃化合物的紫外吸收和氧化还原电位的影响最为明显,其对Pb2+有一定的选择性识别功能,Cu2+能够破坏TTF结构单元。

With the effect of sodium methoxide,two molecular of 2,3-bis（2′-cyanoethylthio）-6,7-bis（buthylthio）-tetrathiafulvalene reacted with two molecular of 2,6-bis（ chloromomethyl） pyridine to afford a novel tetrathiafulvalene-pyridine structure unit-cyclo-phane（3）. Electrochemical properties of cyclophane 3 were determined and its recognition for metal ions were also investigated. The experiment results showed that tetrathiafulvalene units of the novel cyclophane were more easily to be oxidized or reduced in ionic liquid. The UV-vis absorption spectrum and redox property of the TTF cyclophane showed remarkable sensing and coordinating properties to Pb2＋,so the TTF cyclophane could selectively recognize Pb2＋ by the unique properties. The tetrathiafulvalene structure units was destroyed by Cu2＋.