{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T16:55:37Z","timestamp":1789664137872,"version":"4.0.1"},"reference-count":60,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T00:00:00Z","timestamp":1772755200000},"content-version":"vor","delay-in-days":5,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:00:00Z","timestamp":1772323200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Three novel Schiff base chemosensors (\n                    <jats:bold>HZ\u20101<\/jats:bold>\n                    ,\n                    <jats:bold>HZ\u20102<\/jats:bold>\n                    , and\n                    <jats:bold>HZ\u20103<\/jats:bold>\n                    ) were synthesized by condensing 4\u2010hydroxy\u2010[1,1\u2032\u2010biphenyl]\u20103\u2010carbaldehyde with distinct hydrazine derivatives: (Z)\u2010(anthracen\u20109\u2010ylmethylene)hydrazine, (Z)\u2010(pyren\u20101\u2010ylmethylene)hydrazine, and (Z)\u20104\u2010(hydrazonomethyl)\u2010N,N\u2010diphenylaniline. Structural variation was confined to the hydrazine moiety, enabling a systematic investigation of its influence on photophysical and sensing properties. UV\u2010Vis absorption and fluorescence studies revealed marked differences in optical behavior, with\n                    <jats:bold>HZ\u20101<\/jats:bold>\n                    and\n                    <jats:bold>HZ\u20103<\/jats:bold>\n                    chemosensors showing significant fluorescence enhancement upon selective metal ion binding as compared with\n                    <jats:bold>HZ\u20102<\/jats:bold>\n                    . The limit of detection (LOD) for each sensor was in the micromolar range, confirming their high sensitivity. Job's plot analysis indicated a predominant 2:1 ligand\u2010to\u2010metal stoichiometry. Complementary density functional theory (DFT) calculations provided insights into frontier molecular orbitals and electron density distributions, rationalizing the observed spectral variations. Overall, this study demonstrates how precise modification of the hydrazine fragment can tailor the electronic environment and sensing performance of Schiff bases, offering valuable design strategies for efficient fluorescent metal ion chemosensors.\n                  <\/jats:p>","DOI":"10.1002\/bio.70456","type":"journal-article","created":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T20:06:05Z","timestamp":1773000365000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Hydrazone\u2010Derived Schiff Bases as Dual\u2010Mode Sensors: Fluorescence Turn\u2010On Detection of Zn\n                    <sup>2+<\/sup>\n                    and Colorimetric Detection of Zn\n                    <sup>2+<\/sup>\n                    and Cu\n                    <sup>2+<\/sup>\n                    Ions"],"prefix":"10.1002","volume":"41","author":[{"given":"Aditya","family":"C\u00a0P","sequence":"first","affiliation":[{"name":"Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry National Institute of Technology  Calicut India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haritha","family":"C","sequence":"additional","affiliation":[{"name":"Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry National Institute of Technology  Calicut India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Swathi","family":"M","sequence":"additional","affiliation":[{"name":"Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry National Institute of Technology  Calicut India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7875-9517","authenticated-orcid":false,"given":"Chinna\u00a0Ayya\u00a0Swamy","family":"P","sequence":"additional","affiliation":[{"name":"Main Group Organometallics Optoelectronic Materials and Catalysis Lab, Department of Chemistry National Institute of Technology  Calicut India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,6]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3AY01840G"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/10408347.2023.2263877"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10895-024-03770-1"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10895-025-04142-z"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dyepig.2024.112568"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/10408347.2025.2531970"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10895-024-03843-1"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10895-025-04202-4"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.trac.2019.04.025"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/slct.202502325"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4TB01356E"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/cben.201700005"},{"key":"e_1_2_7_14_1","article-title":"An Overview of Schiff Base\u2010Based Fluorescent Turn\u2010On Probes: A Potential Candidate for Tracking Live Cell Imaging of Biologically Active Metal Ions","volume":"494","author":"Afrin A.","year":"2023","journal-title":"Sensors & Diagnostics"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molstruc.2021.132124"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.18811\/ijpen.v11i03.01"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1039\/b916287a"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2023.102378"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11696-022-02284-z"},{"key":"e_1_2_7_20_1","first-page":"4","article-title":"Metalation and Activation of Zn2+ Enzymes via Early Secretory Pathway\u2010Resident ZNT Proteins","volume":"4","author":"Kambe T.","year":"2023","journal-title":"Biophysical Reviews"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.3390\/nu15092140"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.18782\/2582-2845.8652"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.3390\/biom13030416"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.seppur.2006.11.001"},{"issue":"15","key":"e_1_2_7_25_1","first-page":"20","article-title":"A Comprehensive Review on Atomic Absorption Spectroscopy: Principles, Techniques, and Applications","volume":"10","author":"Maharani E. 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