{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T20:19:25Z","timestamp":1792181965026,"version":"4.4.0"},"reference-count":35,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2025,6,24]],"date-time":"2025-06-24T00:00:00Z","timestamp":1750723200000},"content-version":"vor","delay-in-days":23,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100012579","name":"Natural Science Foundation of Qinghai Province","doi-asserted-by":"publisher","award":["2019\u2010ZJ\u2010944Q"],"award-info":[{"award-number":["2019\u2010ZJ\u2010944Q"]}],"id":[{"id":"10.13039\/501100012579","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The Songaria Cynomorium polysaccharide\u2010doped carbon dots (SP\u2010CDs) were synthesized by carbonization\u2010heating method. Songaria Cynomorium polysaccharide (PS) was the carbon source. Ethylenediamine (EDA), phosphoric acid (H\n                    <jats:sub>3<\/jats:sub>\n                    PO\n                    <jats:sub>4<\/jats:sub>\n                    ), and concentrated hydrochloric acid (HCl) were dopants, respectively. The SP\u2010CDs exhibited the maximum fluorescence emission wavelength of 540\u2009nm under the excitation wavelength of 485\u2009nm (\u201cON\u201d state). After the introduction of Fe\n                    <jats:sup>3+<\/jats:sup>\n                    with an intermediate bridging effect, the fluorescence intensity of SP\u2010CDs was quenched due to the formation of the complex (SP\u2010CDs\/Fe\n                    <jats:sup>3+<\/jats:sup>\n                    ) between SP\u2010CDs and Fe\n                    <jats:sup>3+<\/jats:sup>\n                    (\u201cOFF\u201d state). Subsequently, the fluorescence signal returned to \u201cON\u201d due to the redox reaction between AA and Fe\n                    <jats:sup>3+<\/jats:sup>\n                    when ascorbic acid was introduced into SP\u2010CDs\/Fe\n                    <jats:sup>3+<\/jats:sup>\n                    solution. Therefore, the synthesized SP\u2010CDs could be used as a \u201cswitch type\u201d fluorescence sensor for detecting Fe\n                    <jats:sup>3+<\/jats:sup>\n                    and AA. The analysis revealed that the linear range of Fe\n                    <jats:sup>3+<\/jats:sup>\n                    extended from 0.05 to 500.00\u2009\u03bcM, with the limit of detection (LOD) of 0.02\u2009\u03bcM (S\/\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u20093). The scope of analysis for AA was determined to be within the range of 0.65\u2013400.00\u2009\u03bcM, with the limit of detection (LOD) of 0.09\u2009\u03bcM (\n                    <jats:italic>S\/N<\/jats:italic>\n                    \u2009=\u20093). Furthermore, the recommended fluorescence sensor was successfully employed for quantitatively detecting Fe\n                    <jats:sup>3+<\/jats:sup>\n                    and AA in serum samples.\n                  <\/jats:p>","DOI":"10.1002\/bio.70233","type":"journal-article","created":{"date-parts":[[2025,6,24]],"date-time":"2025-06-24T21:14:56Z","timestamp":1750799696000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["\u201cSignal\u2010Switching\u201d Fluorescence Sensing of Fe\n                    <sup>3+<\/sup>\n                    and Ascorbic Acid by Songaria Cynomorium Polysaccharide\u2010Doped Carbon Dots of the Tibetan Medicinal Herb"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0839-6439","authenticated-orcid":false,"given":"Huan","family":"Wang","sequence":"first","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining China"},{"name":"Modern Tibetan Medicine Creation Engineering Technology Research Center of Qinghai Province  Xining China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianfeng","family":"Ma","sequence":"additional","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining China"},{"name":"Modern Tibetan Medicine Creation Engineering Technology Research Center of Qinghai Province  Xining China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wencheng","family":"Mu","sequence":"additional","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining China"},{"name":"Modern Tibetan Medicine Creation Engineering Technology Research Center of Qinghai Province  Xining China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cailin","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining China"},{"name":"Modern Tibetan Medicine Creation Engineering Technology Research Center of Qinghai Province  Xining China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siqi","family":"Sheng","sequence":"additional","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining China"},{"name":"Modern Tibetan Medicine Creation Engineering Technology Research Center of Qinghai Province  Xining China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanyan","family":"Jia","sequence":"additional","affiliation":[{"name":"QingHai Higher Vocational and Technical Institute  Haidong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5762-8347","authenticated-orcid":false,"given":"Yongchang","family":"Lu","sequence":"additional","affiliation":[{"name":"College of Pharmacy Qinghai Minzu University  Xining China"},{"name":"Phytochemistry Key Laboratory of Tibetan Plateau of Qinghai Province  Xining 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