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Host–Guest Hybrid Redox Materials Self‐Assembled from Polyoxometalates and Single‐Walled Carbon Nanotubes
Author(s) -
Jordan Jack W.,
Lowe Grace A.,
McSweeney Robert L.,
Stoppiello Craig T.,
Lodge Rhys W.,
Skowron Stephen T.,
Biskupek Johannes,
Rance Graham A.,
Kaiser Ute,
Walsh Darren A.,
Newton Graham N.,
Khlobystov Andrei N.
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201904182
Subject(s) - polyoxometalate , materials science , carbon nanotube , redox , nanotechnology , electron transfer , energy storage , supercapacitor , molecule , electrolyte , electrochemistry , electrode , photochemistry , catalysis , chemistry , organic chemistry , power (physics) , physics , quantum mechanics , metallurgy
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.