Eutectic Media Open a Synthetic Route to Oligocitrazinic Acid Fluorophores of Purple Hue

dc.contributor.authorSchneider, Helen
dc.contributor.authorStrauss, Volker
dc.contributor.authorVogl, Sarah
dc.contributor.authorAntonietti, Markus
dc.contributor.authorFilonenko, Svitlana
dc.date.accessioned2023-11-07T11:19:25Z
dc.date.available2023-11-07T11:19:25Z
dc.date.issued2023-07-14
dc.date.updated2023-10-16T08:21:21Z
dc.description.abstractUnder isochoric and solvent-free conditions, the reaction between ammonium formate and citric acid results in a deeply purple reaction product with fluorescent properties. This brings this reaction in the realm of bio-based fluorophores and bottom-up carbon nanodots from citric acid. The reaction conditions are optimized in terms of UV–vis spectroscopic properties and, subsequently, the main reaction product is separated. While the structural analysis does not give any indication for carbon nanodots in a general sense, it points towards the formation of molecular fluorophores that consist of oligomerized citrazinic acid derivatives. Furthermore, EPR spectroscopy reveals the presence of stable free radicals in the product. We hypothesize that such open-shell structures may play a general role in molecular fluorophores from citric acid and are not yet sufficiently explored. Therefore, we believe that analysis of these newly discovered fluorophores may contribute to a better understanding of the properties of fluorophores and CND from citric acid in general.en
dc.identifier.issn1439-4235
dc.identifier.issn1439-7641
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/20276
dc.identifier.urihttps://doi.org/10.14279/depositonce-19074
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.subject.otherreactive eutectic media
dc.subject.othercitric acid
dc.subject.othercitrazinic acid
dc.subject.otherdyes
dc.subject.otherquantum dots
dc.titleEutectic Media Open a Synthetic Route to Oligocitrazinic Acid Fluorophores of Purple Hueen
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumbere202300180
dcterms.bibliographicCitation.doi10.1002/cphc.202300180
dcterms.bibliographicCitation.issue17
dcterms.bibliographicCitation.journaltitleChemPhysChemen
dcterms.bibliographicCitation.originalpublishernameWiley
dcterms.bibliographicCitation.originalpublisherplaceNew York, NY
dcterms.bibliographicCitation.pageend
dcterms.bibliographicCitation.pagestart
dcterms.bibliographicCitation.volume24
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Funktionsmaterialien
tub.publisher.universityorinstitutionTechnische Universität Berlin

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