School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK.
GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2TU, UK.
Adv Mater. 2019 Oct;31(41):e1904182. doi: 10.1002/adma.201904182. Epub 2019 Aug 26.
The development of next-generation molecular-electronic, electrocatalytic, and energy-storage systems depends on the availability of robust materials in which molecular charge-storage sites and conductive hosts are in intimate contact. It is shown here that electron transfer from single-walled carbon nanotubes (SWNTs) to polyoxometalate (POM) clusters results in the spontaneous formation of host-guest POM@SWNT redox-active hybrid materials. The SWNTs can conduct charge to and from the encapsulated guest molecules, allowing electrical access to >90% of the encapsulated redox species. Furthermore, the SWNT hosts provide a physical barrier, protecting the POMs from chemical degradation during charging/discharging and facilitating efficient electron transfer throughout the composite, even in electrolytes that usually destroy POMs.
下一代分子电子、电催化和储能系统的发展取决于具有强固材料的可用性，其中分子电荷存储位点和导电主体处于紧密接触状态。本文表明，从单壁碳纳米管（SWNTs）到多金属氧酸盐（POM）簇的电子转移导致主体-客体 POM@SWNT 氧化还原活性混合材料的自发形成。SWNTs 可以将电荷输入和输出到封装的客体分子，从而使 >90%的封装氧化还原物种能够进行电接触。此外，SWNT 主体提供物理屏障，在充电/放电过程中保护 POM 免受化学降解，并促进整个复合材料中的有效电子转移，即使在通常会破坏 POM 的电解质中也是如此。
