title: ATP-modulated ionic transport through synthetic nanochannels.
abstract: Here, we demonstrate an anion controlled molecular gate based on synthetic ion channels modified with polyethyleneimine. For single conical nanochannels, addition of ATP leads to significant decrease in the rectified ion flux, representing the closure of the ionic gate. Complementary experiments performed with nanoporous membranes show that the flux of charged dye (NDS(2-)) through a cylindrical nanochannel array diminishes by the co-addition of ATP in the analyte solution.
authors.affiliation: Technische Universität Darmstadt, Fachgebiet Materialanalytik, Petersenstr. 23, D-64287 Darmstadt, Germany. m.ali@gsi.de
authors.forename: Mubarak
authors.initials: M
authors.lastname: Ali
authors.forename: Quoc Hung
authors.initials: QH
authors.lastname: Nguyen
authors.forename: Reinhard
authors.initials: R
authors.lastname: Neumann
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Ensinger
mesh_terms: D000255:Adenosine Triphosphate / Q000737:chemistry*; D004573:Electrolytes; D017136:Ion Transport; D007477:Ions / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D011094:Polyethyleneimine / Q000737:chemistry
chemical_list: D004573:Electrolytes; D007477:Ions; D000255:Adenosine Triphosphate; D011094:Polyethyleneimine