{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T18:08:45Z","timestamp":1766599725026,"version":"build-2065373602"},"reference-count":71,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2023,6,1]],"date-time":"2023-06-01T00:00:00Z","timestamp":1685577600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science Fund","award":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"],"award-info":[{"award-number":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"]}]},{"name":"Ministry of Education and Science of Bulgaria","award":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"],"award-info":[{"award-number":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"]}]},{"name":"European Union Next Generation EU","award":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"],"award-info":[{"award-number":["K\u03a0-06-H49\/2","BG-RRP-2.004-0008-C01"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A new water-soluble poly(propylene imine) dendrimer (PPI) modified with 4-sulfo-1,8-naphthalimid units (SNID) and its related structure monomer analog (SNIM) has been prepared by a simple synthesis. The aqueous solution of the monomer exhibited aggregation-induced emission (AIE) at 395 nm, while the dendrimer emitted at 470 nm due to an excimer formation beside the AIE at 395 nm. Fluorescence emission of the aqueous solution of either SNIM or SNID was significantly affected by traces of different miscible organic solvents, and the limits of detection were found to be less than 0.05% (v\/v). Moreover, SNID exhibited the function to execute molecular size-based logic gates where it mimics XNOR and INHIBIT logic gates using water and ethanol as inputs and the AIE\/excimer emissions as outputs. Hence, the concomitant execution of both XNOR and INHIBIT enables SNID to mimic digital comparators.<\/jats:p>","DOI":"10.3390\/s23115268","type":"journal-article","created":{"date-parts":[[2023,6,2]],"date-time":"2023-06-02T02:16:48Z","timestamp":1685672208000},"page":"5268","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["New Water-Soluble Poly(propylene imine) Dendrimer Modified with 4-Sulfo-1,8-naphthalimide Units: Sensing Properties and Logic Gates Mimicking"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0997-1693","authenticated-orcid":false,"given":"Awad I.","family":"Said","sequence":"first","affiliation":[{"name":"Faculty of Medicine, Sofia University \u201cSt. Kliment Ohridski\u201d, 1407 Sofia, Bulgaria"},{"name":"Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7556-1222","authenticated-orcid":false,"given":"Desislava","family":"Staneva","sequence":"additional","affiliation":[{"name":"Department of Textile, Leader, and Fuels, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7204-8183","authenticated-orcid":false,"given":"Ivo","family":"Grabchev","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, Sofia University \u201cSt. Kliment Ohridski\u201d, 1407 Sofia, Bulgaria"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"453","DOI":"10.1016\/S0079-6700(00)00011-3","article-title":"Functional dendrimers, hyperbranched and star polymers","volume":"25","author":"Inoue","year":"2000","journal-title":"Prog. 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