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 Faculty Publications 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/. Creator An entity primarily responsible for making the resource Varghese, Nikita; KP, Chaithra; John, Varsha Lisa; Fasila, P.M.; Nair, Yamuna; Vinod, T.P.; Davis, Maria; Johar, Cerin Title A name given to the resource An ESIPT/AIE active Schiff Base for the selective detection of Picric acid, Ammonia, and its potential applications in anticounterfeiting and latent fingerprinting Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy;Volume;346;Issue;;Article No.;126910; Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1016/j.saa.2025.126910" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.saa.2025.126910</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105016308128?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105016308128?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Varghese N., Department of Chemistry, Christ University, Bangalore, 560029, India; KP C., Department of Chemistry, Christ University, Bangalore, 560029, India; John V.L., Department of Chemistry, Christ University, Bangalore, 560029, India; Fasila P.M., Department of Chemistry, Sir Syed College, Taliparamba, Kerala, Kannur, 670142, India; Nair Y., Department of Chemistry, Christ University, Bangalore, 560029, India; Vinod T.P., Department of Chemistry, Christ University, Bangalore, 560029, India; Davis M., Department of Chemistry, Christ University, Bangalore, 560029, India; Johar C., Department of Chemistry, Christ University, Bangalore, 560029, India Description An account of the resource A novel ESIPT/AIE-active Schiff base fluorophore, N?1,N?6-bis((Z)-2,4-dihydroxybenzylidene)adipohydrazide (ADHB), has been designed and synthesized. ADHB exhibits remarkable selectivity and sensitivity towards picric acid in aqueous phase, as well as ammonia in both aqueous and solid phases, with LOD values of 55.5 nM and 88.7 nM respectively, facilitating its efficacy in real sample analysis. While exhibiting notable luminescence in polar solvents (? = 0.15 %), ADHB displays pronounced fluorescence enhancement in the solid state (??? = 320 nm) due to aggregation-induced emission (AIE). The molecular skeleton of ADHB incorporates two potential excited-state intramolecular proton transfer (ESIPT) active sites that exhibit distinctive, reversible halochromic properties in the solid state. The adaptability of this Schiff base as a multi-responsive fluorescent material was explored by the fabrication of a blue-emitting polyvinyl alcohol (PVA) composite film and paper-based test strips. The detection limits agree with the amount of contaminants that the U.S. Environmental Protection Agency (EPA) allows in drinking water. The sensing mechanism was elucidated through comprehensive DFT studies, NMR titration studies and Job's plot analysis. The tunable photophysical properties of this AIE-active probe facilitates practical applications in anti-counterfeiting and latent fingerprint visualization, highlighting its significance in forensic science and security authentication. These findings establish ADHB as a fluorescent platform for the sensitive detection and continuous monitoring of hazardous compounds in environmental systems. 2025 Elsevier B.V. Subject The topic of the resource Aggregation induced emission (AIE); Anticounterfeiting; Excited state intramolecular proton transfer (ESIPT); Fluorescence switching; Latent fingerprinting (LFP); Schiff base Publisher An entity responsible for making the resource available Elsevier B.V. Relation A related resource ISSN: 13861425; CODEN: SAMCA Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online