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|Title:||Electrostatically self-assembled polyoxometalates on molecular-dye- functionalized diamond||Authors:||Zhong, Y.L.
|Issue Date:||30-Dec-2009||Citation:||Zhong, Y.L., Ng, W., Yang, J.-X., Loh, K.P. (2009-12-30). Electrostatically self-assembled polyoxometalates on molecular-dye- functionalized diamond. Journal of the American Chemical Society 131 (51) : 18293-18298. ScholarBank@NUS Repository. https://doi.org/10.1021/ja908131t||Abstract:||We have successfully immobilized phosphotungstic acid (PTA), a polyoxometalate, on the surface of boron-doped diamond (BDD) surface through electrostatic self-assembly of PTA on pyridinium dye-functionalized-BDD. The inorganic/organic bilayer structure on BDD is found to exhibit fast surface-confined reversible electron transfer. The molecular dye-grafted BDD can undergo controllable electrical stripping and regeneration of PTA which can be useful for electronics or sensing applications. Furthermore, we have demonstrated the use of PTA as a molecular switch in which the direction of photocurrent from diamond to methyl viologen is reversed by the surface bound PTA. Robust photocurrent converter based on such molecular system-diamond platform can operate in corrosive medium which is not tolerated by indium tin oxide electrodes. © 2009 American Chemical Society.||Source Title:||Journal of the American Chemical Society||URI:||http://scholarbank.nus.edu.sg/handle/10635/76086||ISSN:||00027863||DOI:||10.1021/ja908131t|
|Appears in Collections:||Staff Publications|
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