3-Hydroxyphenylboronic Acid-Based Carbon Dot Sensors for Fructose Sensing

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Crista, DMA (Autor) Outra; Mello, GPC (Autor) Outra; Shevchuk, O (Autor) Outra; Sendao, RMS (Autor) Outra; Simoes, EFC (Autor) Outra; Leitao, JMM (Autor) Outra; da Silva, LP (Autor) FCUP; Joaquim C G E Esteves da Silva (Autor) FCUP

Revista

Título: Journal of Fluorescence

Vol. 29

Páginas: 265-270

ISSN: 1053-0509

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 16 Citações

Scopus - 19 Citações

Outras Informações

ID Authenticus: P-00Q-2JF

DOI: 10.1007/s10895-018-02336-2

Abstract (EN): The selective fluorescence sensing of fructose was achieved by fluorescence quenching of the emission of hydrothermal-synthesized carbon quantum dots prepared by 3-hydroxyphenylboronic acid. Quantification of fructose was possible in aqueous solutions with pH of 9 (Limit of Detection L-OD and Limit of Quantification L-OQ of 2.04 and 6.12mM), by quenching of the emission at 376nm and excitation similar to 380nm with a linearity range of 0-150mM. A Stern-Volmer constant (K-SV) of 2.11x10(-2)mM(-1) was obtained, while a fluorescent quantum yield of 31% was calculated. The sensitivity of this assay towards fructose was confirmed by comparison with other sugars (such as glucose, sucrose and lactose). Finally, the validity of the proposed assays was further demonstrated by performing recovery assays in different matrixes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6