Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Studies on the characterisation of thiophene substituted 1,3,4-oxadiazole derivative for the highly selective and sensitive detection of picric acid Subject The topic of the resource 1,3,4-oxadiazole; Binding constant; Fluorescence quenching; Nitrated explosives or nitroaromatic compounds; Picric acid Description An account of the resource A novel thiophene substituted 1,3,4-oxadiazole based chemosensor namely 2-(4-(5-(5-hexylthiophen-2-yl) thiophen-2-yl)phenyl) -5-(5-(5-(5-hexylthiophen-2-yl) thiophen-2-yl)thiophen-2-yl)-1,3,4-oxadiazole [TKO] has been characterised for the efficient detection of picric acid (PA) based on fluorescence quenching mechanism. In this regard, the electronic absorption spectra, fluorescence spectra, and fluorescence lifetime of TKO are recorded in the presence of different nitroaromatic compounds (NACs) in ethanol at room temperature. The absorption studies exhibited a blue shift in the absorption maxima with the increase in the concentration of PA. In the fluorescence titration studies, TKO shows a remarkable fluorescence quenching with picric acid as compared to other nitroaromatic compounds. Using the Benesi-Hildebrand plot, the binding constant value of PA with TKO is determined and is of the order of 6.467 104 M?1. Job's plot analysis confirms the 1:1 binding stoichiometry ratio between TKO and PA and is supported by the 1H NMR studies. The detection limit is determined and is of the order of 10.08 M. The competitive studies revealed that TKO is highly selective for recognizing PA without the interference of other NACs. The theoretical studies were also carried out to understand the binding mechanisms of PA with TKO. The fluorescence quenching of TKO by PA may be attributed to photo induced electron transfer (PET). Overall, the experimental findings suggest that, the novel probe TKO may be used as a highly selective and sensitive chemosensor for the detection of explosives like picric acid. 2022 Elsevier B.V. Creator An entity primarily responsible for making the resource Thippeswamy M.S.; Naik L.; Maridevarmath C.V.; Savanur H.M.; Malimath G.H. Source A related resource from which the described resource is derived Journal of Molecular Structure, Vol-1264 Publisher An entity responsible for making the resource available Elsevier B.V. Date A point or period of time associated with an event in the lifecycle of the resource 2022-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1016/j.molstruc.2022.133274" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.molstruc.2022.133274</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130194990&amp;doi=10.1016%2Fj.molstruc.2022.133274&amp;partnerID=40&amp;md5=f5c0123e50075c72a50f77b4ffe0e2b8" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130194990&amp;doi=10.1016%2fj.molstruc.2022.133274&amp;partnerID=40&amp;md5=f5c0123e50075c72a50f77b4ffe0e2b8</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 222860; CODEN: JMOSB Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Thippeswamy M.S., UG and PG Department of Physics, Karnatak Science College, Karnataka, Dharwad, 580001, India; Naik L., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Karnataka, Bengaluru, 560029, India; Maridevarmath C.V., Department of Physics, Government First Grade College, Karnataka, Hubballi, 580032, India; Savanur H.M., Department of Chemistry, P.C. Jabin, Science College, Karnataka, Hubballi, India; Malimath G.H., UG and PG Department of Physics, Karnatak Science College, Karnataka, Dharwad, 580001, India