{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T07:44:10Z","timestamp":1792050250919,"version":"4.4.0"},"reference-count":30,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"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":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Two new chalcones derived from coumarin and their corresponding Al(III), Fe(III), Ni(II), and Zn(II) complexes were synthesized. UV\u2013visible absorbance spectra showed ligand\u2010centered \u03c0\u2009\u2192\u2009\u03c0* transitions, reducing optical band gaps from 3.20\u2009eV for parent coumarin to 2.94\u20133.16\u2009eV after conjugation. Solvent polarity also affected absorbance bands, whereas metal complexation preserved band gaps but increased absorbance intensity through ligand\u2010to\u2010metal charge transfer. Photoluminescence spectra exhibited blue\u2010green emission within the range of 432\u2013458\u2009nm, influenced by solvent polarity and the degree of conjugation, with diamagnetic Al(III) and Zn(II) amplifying emission (CHEF effect) while paramagnetic Fe(III) induced significant quenching (CHEQ). Fluorescence lifetimes varied between 0.85 and 4.80\u2009ns for the unbound ligands and 1.12 and 4.63\u2009ns for the complexes; the prolonged yet significantly quenched Fe(III) complexes suggested static quenching, whereas the brief\u2010lived, highly emissive Ni(II) complex demonstrated an increased radiative rate. Cyclic voltammetry showed irreversible anodic oxidation, with HOMO levels from oxidation onsets and LUMO from the optical band gap. Chalcone functionalization increased the HOMO level and cycling stability compared to the parent coumarin, whereas metal coordination, especially with Ni(II) and Zn(II), improved charge\u2010transfer activity and stability without changing the band gap. These findings suggest optoelectronic and photonic applications for coumarin\u2013chalcone derivatives and their metal complexes.<\/jats:p>","DOI":"10.1002\/bio.70629","type":"journal-article","created":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T03:45:04Z","timestamp":1790739904000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis, Photophysical, and Electrochemical Characterization of Coumarin\u2013Chalcone Derivatives and Their Al(III), Fe(III), Ni(II), and Zn(II) Complexes"],"prefix":"10.1002","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-3121-2085","authenticated-orcid":false,"given":"Walaa Saeed","family":"Abaas","sequence":"first","affiliation":[{"name":"Department of Physics, College of Science University of Basrah  Basra Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9377-144X","authenticated-orcid":false,"given":"M. A.","family":"Mahdi","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Science University of Basrah  Basra Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7478-4117","authenticated-orcid":false,"given":"AbdulKarim\u2010Talaq","family":"Mohammad","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Science University of Anbar  Ramadi Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-8797-5006","authenticated-orcid":false,"given":"Raed K.","family":"Zaidan","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Science University of Basrah  Basra Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00253-016-7660-z"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jhet.3373"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms12052822"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bmcl.2003.08.025"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.9b00145"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jphotochem.2017.05.039"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dyepig.2017.01.050"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molstruc.2017.11.055"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molliq.2020.113782"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/cm702804r"},{"key":"e_1_2_9_12_1","first-page":"343","article-title":"Coumarin Based Emissive Rod Shaped New Schiff Base Mesogens and Their Zinc (II) Complexes: Synthesis, Photophysical, Mesomorphism, Gelation and DFT Studies","volume":"43","author":"Paul M. 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