基于环蕃类分子的铁氰化钾电化学存储和释放  

Electrochemical storage/release of K_3Fe(CN)_6 molecule based on surface-confined cyclophane recognition

作　　者：闫捷[1] 于萍[1] 程翰俊[1] 张德清[1] 毛兰群[1] 

机构地区：[1]北京分子科学国家实验室中国科学院化学研究所活体分析化学院重点实验室,北京100190

出　　处：《中国科学：化学》2011年第8期1345-1351,共7页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(90813032&20975104);国家重点基础研究发展计划(2007CB935603 & 2010CB933502);中国科学院(KJCX2-YW-W25&Y2010015)的项目资助

摘　　要：通过利用合成的环蕃类化合物1与单壁碳纳米管(SWNTs)间的π-π共轭相互作用,将化合物1固定在SWNTs的表面,制备了1-SWNT修饰电极.利用化合物1氧化态和还原态与铁氰化钾分子之间不同强度的主客体相互作用,实现了铁氰化钾分子在1-SWNT修饰电极表面的电化学可控吸附和解吸.循环伏安和XPS实验结果表明,在本研究采用的实验条件下,铁氰化钾分子在电极表面20s内即可达到吸附平衡;当电极在0.70V下极化1000s后,大多数吸附的铁氰化钾可从电极表面解吸.基于此,制备了铁氰化钾的可控存储和释放的电化学器件,该器件不但可以重复进行铁氰化钾分子的存储和释放,而且多次重复操作表现出较好的稳定性和重现性.本研究在发展具有特殊用途的电化学纳米器件,例如分子搬运器、电化学开关等研究中具有重要意义.This study describes the controlled storage and release of K 3 Fe（CN） 6 molecules based the synthetic compound 1 confined onto single-walled carbon nanotubes （SWNTs）.Synthetic compound 1 was adsorbed onto SWNTs with the π-π stacking interaction between both components.The controllable storage and release of K 3 Fe（CN） 6 molecules was carried out by the different interaction of K 3 Fe（CN） 6 molecules between different redox states of compound 1.For instance,the K 3 Fe（CN） 6 molecules were stably stored onto SWNT surface when the compound 1 was presented as the oxidation state and the surface stored K 3 Fe（CN） 6 molecules were released from the surface when the compound 1 was kept as the reduction state.The surface storage/release of the K 3 Fe（CN） 6 molecules was quite stable and reproducible and such property is envisaged to be potentially useful for development of novel kinds of electrochemical devices.

关 键 词：电化学存储和释放 联吡啶环蕃 铁氰化钾 超分子识别 

分 类 号：O641.3[理学—物理化学]