Diamondoid Nanostructures as sp 3 ‐Carbon‐Based Gas Sensors

Oana Moncea (1) , Juan Casanova‐chafer , Didier Poinsot (1) , Lukas Ochmann , Clève D Mboyi (1) , Houssein Nasrallah , Eduard Llobet (2) , Imen Makni , Molka El atrous , Stéphane Brandès (1) , Yoann Rousselin (1) , Bruno Domenichini (3) , Nicolas Nuns (4) , Andrey A Fokin , Peter R Schreiner , Jean-Cyrille Hierso

1 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]
2 MINOS-EMaS, Electronic Engineering Department
3 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
4 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181

Diamondoids, sp3-hybridized nanometer-sized diamond-like hydrocarbons (nanodiamonds), difunctionalized with hydroxyl and primary phosphine oxide groups enable the assembly of the first sp3-C-based chemical sensors by vapor deposition. Both pristine nanodiamonds and palladium nanolayered composites can be used to detect toxic NO2 and NH3 gases. This carbon-based gas sensor technology allows reversible NO2 detection down to 50 ppb and NH3 detection at 25–100 ppm concentration with fast response and recovery processes at 100 °C. Reversible gas adsorption and detection is compatible with 50% humidity conditions. Semiconducting p-type sensing properties are achieved from devices based on primary phosphine-diamantanol, in which high specific area (ca. 140 m2 g–1) and channel nanoporosity derive from H-bonding.

Domaines: Chimie

Oana Moncea, Juan Casanova‐chafer, Didier Poinsot, Lukas Ochmann, Clève D Mboyi, et al.. Diamondoid Nanostructures as sp 3 ‐Carbon‐Based Gas Sensors. Angewandte Chemie, 2019, ⟨10.1002/ange.201903089⟩. ⟨hal-02176778⟩