A redox-sensitive nanofluidic diode based on nicotinamide-modified asymmetric nanopores

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• 作者：Mubarak Ali^a ; ^b ; ^M.Ali@gsi.deAuthor Vitae ; Ishtiaq Ahmed^cAuthor Vitae ; Patricio Ramirez^dAuthor Vitae ; Saima Nasir^aAuthor Vitae ; Salvador Mafe^eAuthor Vitae ; Christof M. Niemeyer^cAuthor Vitae ; Wolfgang Ensinger^aAuthor Vitae
• 关键词：Synthetic nanopores ; Redox reaction ; Nicotinamide ; Current rectification ; Surface functionalization ; Track-etching
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：240
• 期：Complete
• 页码：895-902
• 全文大小：1437 K
• 卷排序：240

文摘

Asymmetric nanopores are fabricated via ion track-etching method. Redox-sensitive moieties are immobilized on the pore walls. Functionalized pore is exposed to oxidizing (H2O2) and reducing (dithionite) agents. Redox reaction in confined geometries is monitored through changes in electrical rectification. Experiments are described theoretically using a Poisson-Nernst-Planck model.