{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T21:23:59Z","timestamp":1790112239011,"version":"4.0.1"},"reference-count":36,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,2,18]],"date-time":"2026-02-18T00:00:00Z","timestamp":1771372800000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T00:00:00Z","timestamp":1769904000000},"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":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    We have reported perylene tetra\u2010(alkoxycarbonyl) (PTAC) derivative\n                    <jats:bold>PTE\u2010EA<\/jats:bold>\n                    functionalized with tetraoctylester chains at the\n                    <jats:italic>peri<\/jats:italic>\n                    \u2010positions and an electron\u2010donating group 2\u2010aminoethanol (2\u2010AE) at the mono\n                    <jats:italic>bay<\/jats:italic>\n                    \u2010position.\n                    <jats:bold>PTE\u2010EA<\/jats:bold>\n                    showed colorimetric and fluorescence turn\u2010on response for detection of cupric ions (Cu\n                    <jats:sup>2+<\/jats:sup>\n                    ) in binary aqueous\u2013organic mixtures. Upon Cu\n                    <jats:sup>2+<\/jats:sup>\n                    addition, the solution\n                    <jats:bold>PTE\u2010EA<\/jats:bold>\n                    in 30% HEPES buffer (4\u2010(2\u2010hydroxyethyl)\u20101\u2010piperazineethanesulfonic acid)\u2013CH\n                    <jats:sub>3<\/jats:sub>\n                    CN (pH\u20097.3) showed a decrease in intramolecular charge transfer (ICT) absorption band at 536\u2009nm with an increase in perylene's absorption at 460\u2009nm. Significant fluorescence enhancement at 520\u2009nm via inhibition of the acceptor\u2010excited photoinduced electron transfer (PET) process from 2\u2010AE to the electron\u2010deficient perylene core was observed. Upon Cu\n                    <jats:sup>2+<\/jats:sup>\n                    complexation, the increases in HOMO\u2013LUMO energy gap from 2.689 to 2.824\u2009eV and lowering of the HOMO energy from \u22125.350 to \u221210.766\u2009eV supported the experimental bathochromic shift in the absorption maxima and thermodynamically unfavorable PET enabled fluorescence turn\u2010on response, respectively. The formation of the\n                    <jats:bold>PTE\u2010EA<\/jats:bold>\n                    \u2010Cu\n                    <jats:sup>2+<\/jats:sup>\n                    complex was further corroborated by dynamic light scattering (DLS) studies, and cyclic voltammetric (CV) profile exhibited marked alterations. Also, PTAC as mono\u2010brominated PTE\u2010II with inherent solid emission was used to visualize latent fingerprints (LFPs) both under 365\u2009nm and daylight to achieve second level of information.\n                  <\/jats:p>","DOI":"10.1002\/bio.70453","type":"journal-article","created":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T04:25:57Z","timestamp":1771475157000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Colorimetric and Fluorescent \u201cLight\u2010Up\u201d Probe to Investigate Intramolecular Charge Transfer and Photoinduced Electron Transfer Mechanisms for the Detection of Cu\n                    <sup>2+<\/sup>\n                    and a Solid\u2010State Emitter for the Visualization of Latent 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