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Eutectic Media Open a Synthetic Route to Oligocitrazinic Acid Fluorophores of Purple Hue.
Schneider, Helen; Strauss, Volker; Vogl, Sarah; Antonietti, Markus; Filonenko, Svitlana.
Afiliación
  • Schneider H; Max Planck Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.
  • Strauss V; Max Planck Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.
  • Vogl S; Department of Chemistry/Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany.
  • Antonietti M; Max Planck Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.
  • Filonenko S; Max Planck Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.
Chemphyschem ; 24(17): e202300180, 2023 Sep 01.
Article en En | MEDLINE | ID: mdl-37358187
Under 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.
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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Chemphyschem Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Alemania

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Chemphyschem Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Alemania