title: Highly Networked Capsular Silica-Porphyrin Hybrid Nanostructures as Efficient Materials for Acetone Vapor Sensing.
abstract: The development of novel functional nanomaterials is critically important for the further evolution of advanced chemical sensor technology. For this purpose, metalloporphyrins offer unique binding properties as host molecules that can be tailored at the synthetic level and potentially improved by incorporation into inorganic materials. In this work, we present a novel hybrid nanosystem based on a highly networked silica nanoarchitecture conjugated through covalent bonding to an organic functional molecule, a tetraphenylporphyrin derivative, and its metal complexes. The sensing properties of the new hybrid materials were studied using a nanomechanical membrane-type surface stress sensor (MSS) with acetone and nitric oxide as model analytes. This hybrid inorganic-organic MSS-based system exhibited excellent performance for acetone sensing at low operating temperatures (37 °C), making it available for diagnostic monitoring. The hybridization of an inorganic substrate of large surface area with organic molecules of various functionalities results in sub-ppm detection of acetone vapors. Acetone is an important metabolite in lipid metabolism and can also be present in industrial environments at deleterious levels. Therefore, we believe that the analysis system presented by our work represents an excellent opportunity for the development of a portable, easy-to-use device for monitoring local acetone levels.
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.|Faculty of Materials Science and Engineering, Warsaw University of Technology , Woloska 141, 02-507 Warsaw, Poland.
authors.forename: Izabela
authors.initials: I
authors.lastname: Osica
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.|International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS) , Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Gaku
authors.initials: G
authors.lastname: Imamura
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.
authors.forename: Kota
authors.initials: K
authors.lastname: Shiba
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.|Herbert Gleiter Institute for Nanoscience, Nanjing University of Science and Technology , 200 Xiaolingwei, Nanjing, 210094, China.
authors.forename: Qingmin
authors.identifier: http://orcid.org/0000-0001-7810-3438
authors.initials: Q
authors.lastname: Ji
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.
authors.forename: Lok Kumar
authors.initials: LK
authors.lastname: Shrestha
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.
authors.forename: Jonathan P
authors.identifier: http://orcid.org/0000-0002-4229-5842
authors.initials: JP
authors.lastname: Hill
authors.affiliation: Faculty of Materials Science and Engineering, Warsaw University of Technology , Woloska 141, 02-507 Warsaw, Poland.
authors.forename: Krzysztof J
authors.initials: KJ
authors.lastname: Kurzydłowski
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.|Materials Science and Engineering, Graduate School of Pure and Applied Science, University of Tsukuba , Tennodai 1-1-1 Tsukuba, Ibaraki 305-8571, Japan.
authors.forename: Genki
authors.initials: G
authors.lastname: Yoshikawa
authors.affiliation: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba 305-0044, Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Ariga
keywords: acetone sensor; chemical sensor; metalloporphyrin; nanoflake−shell silica particles; nanomechanical surface stress type sensor; silica−porphyrin hybrid materials