title: High-performance organic nanomembrane based sensors for rapid in situ acid detection.
abstract: Here, we demonstrate the fabrication, characterization, and tailoring of porous organic nanomembranes and their direct integration on inorganic substrates for sensing applications. The chemically prepared nanomembranes can be integrated on both conducting and insulating substrates by either transfer or direct synthesis. We also successfully demonstrate their use for the detection of commonly used acids including HCl, H(2)SO(4), or H(3)PO(4) and their respective counterions, chlorides, sulfates, and phosphates. Impressively, the in situ acid detection is achieved down to 5 nmol·L(-1), while the quantification is feasible between 5 μmol·L(-1) and 10 mmol·L(-1). These values are among the lowest values reported so far in literature. Furthermore, the organic nanomembrane based sensor covers a wide concentration range of almost 8 orders of magnitude including the environmental limits currently adopted.
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Céline
authors.initials: C
authors.lastname: Vervacke
authors.forename: Carlos Cesar
authors.initials: CC
authors.lastname: Bof Bufon
authors.forename: Dominic J
authors.initials: DJ
authors.lastname: Thurmer
authors.forename: Pablo F
authors.initials: PF
authors.lastname: Siles
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt
mesh_terms: D006851:Hydrochloric Acid / Q000032:analysis*; D049329:Nanostructures / Q000737:chemistry*; D010756:Phosphoric Acids / Q000032:analysis*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity; D011758:Pyrroles / Q000138:chemical synthesis / Q000737:chemistry*; D013464:Sulfuric Acids / Q000032:analysis*; D013499:Surface Properties
chemical_list: D010756:Phosphoric Acids; D011108:Polymers; D011758:Pyrroles; D013464:Sulfuric Acids; C067635:polypyrrole; C030242:phosphoric acid; C033158:sulfuric acid; D006851:Hydrochloric Acid