A novel pyrenyl-furan hydrazone on paper-based device for the selective detection of trinitrotoluene. (21st March 2023)

• Record Type: Journal Article
• Authors: Liabsungnoen, Anusorn; Mayurachayakul, Pipattra; Srikittiwanna, Kittiwat; Dungchai, Wijitar; Sukwattanasinitt, Mongkol; Srisuwannaket, Choladda; Mingvanish, Withawat; Niamnont, Nakorn
• Is Part Of: New journal of chemistry. Volume 47:Number 14(2023)
• Page Start: 6880
• Page End: 6888
• Publication Date: 2023-03-21
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d3nj00404j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : T2 paper-based sensor detection of TNT was linear from 30–500 μM with a detection limit of 30 μM. The T2 paper-based sensor can detect TNT with high selectivity and sensitivity. Abstract : A new fluorescent probe (T2 ) containing pyrene-hydrazone furan moieties was developed and synthesized through a two-step process and then coated onto filter paper to form a paper-based sensor for TNT detection. The T2 sensor uses photoinduced electron transfer (PET) induced fluorescence quenching to detect TNT. The sensor properties were studied using fluorescence spectra, 1 H-NMR titration and density functional theory (DFT) calculations. The reaction time of the T2 paper-based sensor for TNT detection was only five minutes. A smartphone was used as an alternative instrument to detect fluorescence signals and a typical image J-processing application was employed to evaluate the grayscale values of the smartphone-captured photographs. The sensor showed a linear concentration range for TNT detection of between 30–500 μM and a detection limit of 30 μM. The T2 paper-based sensor was found to have high selectivity and sensitivity, and it can successfully detect and image TNT in actual samples. This research demonstrates that a T2 paper-based sensor is a promising alternative for TNT detection owing to its short reaction time, high selectivity, sensitivity, and easy applicability.