{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T17:28:27Z","timestamp":1761154107602},"reference-count":0,"publisher":"Slovenian Chemical Society","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ACSi"],"abstract":"<jats:p>The current study presents a fluorescence-based \u2018On-Off-On\u2019 nanoprobe composed of rose petal-derived graphene quantum dots embedded in zinc metal-organic frameworks (RP-GQDs@Zn-MOFs) as a proof of concept for quercetin sensing. The particle size and HR-TEM analysis confirmed the synthesis of a uniformly distributed nanosized probe, while the zeta potential (+33.03 mV) verified its good stability. The fluorescence analysis confirmed that the introduction of copper ions (Cu2+) resulted in fluorescence quenches, while the inclusion of quercetin forms quercetin-Cu2+ complex, leading to recovery of quenched fluorescence in RP-GQDs@Zn-MOFs due to static quenching. The nanoprobe demonstrated a wide concentration range and a low detection limit of 100 ng\/mL to 1400 ng\/mL (R2 = 0.99) and 37.8 ng\/mL, respectively. Selectivity analysis highlighted pronounced specificity for quercetin, attributed to Cu2+ coordination between carbonyl oxygen atom and the 3-OH group of quercetin. Furthermore, designed probe exhibited excellent stability, repeatability (RSD &lt; 5), and potential for real-time analysis.<\/jats:p>","DOI":"10.17344\/acsi.2022.7870","type":"journal-article","created":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T10:03:13Z","timestamp":1702634593000},"page":"661-673","source":"Crossref","is-referenced-by-count":2,"title":["Zinc Metal-Organic Frameworks- Graphene Quantum Dots Nanocomposite Mediated Highly Sensitive and Selective Fluorescence \u201cOn-Off-On\u201d Probe for Sensing of Quercetin"],"prefix":"10.17344","volume":"70","author":[{"given":"Sopan N.","family":"Nangare","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Premnath M.","family":"Sangare","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ashwini G.","family":"Patil","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pravin O.","family":"Patil","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"7072","published-online":{"date-parts":[[2023,12,20]]},"container-title":["Acta Chimica Slovenica"],"original-title":[],"deposited":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T10:03:40Z","timestamp":1702634620000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.matheo.si\/index.php\/ACSi\/article\/view\/7870"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,12,20]]},"references-count":0,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2023,12,20]]}},"URL":"https:\/\/doi.org\/10.17344\/acsi.2022.7870","relation":{},"ISSN":["1580-3155"],"issn-type":[{"value":"1580-3155","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,12,20]]}}}