Detection of nitroaromatic and peroxide-based explosives with amine- and phosphine-functionalized diketopyrrolopyrroles
Warzecha, Monika and Morris, Graeme and McLean, Andrew J. and Calvo-Castro, Jesus and McHugh, Callum J. (2023) Detection of nitroaromatic and peroxide-based explosives with amine- and phosphine-functionalized diketopyrrolopyrroles. ACS Applied Materials and Interfaces, 15 (23). pp. 27915-27927. ISSN 1944-8244 (https://doi.org/10.1021/acsami.3c02714)
Preview |
Text.
Filename: Warzecha_etal_ACS_AMI_2023_Detection_of_nitroaromatic_and_peroxide_based_explosives.pdf
Final Published Version License: Download (5MB)| Preview |
Abstract
Effective strategies for the detection and identification of explosives are highly desirable. Herein, we illustrate the efficient optoelectronic detection of nitroaromatic and peroxide-based explosives using amine- and phosphine-substituted diketopyrrolopyrroles. Selective quenching and an unprecedented enhancement of thin-film emission in the presence of nitroaromatic vapors are demonstrated via the judicious choice of amine substituents. The modulation of fluorescence emission in each case is shown to be dominated by electronic and thermodynamic effects, the vapor pressure of explosives, and the thin-film morphology. For peroxide detection, we describe an approach exploiting redox-mediated functional group transformation. The rapid oxidation of triphenylphosphine to phosphine oxide with hydrogen peroxide affords a significant increase in fluorescence emission, facilitating the sensitive turn-on detection of an important class of explosives at ppb concentrations.
-
-
Item type: Article ID code: 85789 Dates: DateEvent14 June 2023Published31 May 2023Published Online18 May 2023AcceptedSubjects: Medicine > Therapeutics. Pharmacology Department: Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences Depositing user: Pure Administrator Date deposited: 13 Jun 2023 14:15 Last modified: 23 Aug 2024 18:35 URI: https://strathprints.strath.ac.uk/id/eprint/85789