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

被引：19

作者：

Crista, Diana M. A. ^{[1
]}

Mello, Guilherme P. C. ^{[1
]}

Shevchuk, Olena ^{[1
]}

Sendao, Ricardo M. S. ^{[1
]}

Simoes, Eliana F. C. ^{[2
]}

Leitao, Joao M. M. ^{[2
]}

da Silva, Luis Pinto ^{[1
,3
]}

Esteves da Silva, Joaquim C. G. ^{[1
,3
]}

机构：

[1] Univ Porto, Fac Sci, Chem Res Unit CIQUP, R Campo Alegre 697, P-4169007 Porto, Portugal

[2] Univ Coimbra, Fac Farm, Chem Res Unit CIQUP, Polo Ciencias Saude, P-3000548 Coimbra, Portugal

[3] Univ Porto, Fac Sci, GreenUPorto, LACOMEPHI, R Campo Alegre 697, P-4169007 Porto, Portugal

来源：

JOURNAL OF FLUORESCENCE | 2019年 / 29卷 / 01期

关键词：

Carbon dots; Boronic acids; Fructose; Sensing; Fluorescence quenching; EMISSION TURN-ON; BORONIC ACID; SACCHARIDES; BEVERAGES; GLUCOSE; SUGAR; MECHANISM; RECEPTORS; EPIDEMIC; ALDITOLS;

D O I：

10.1007/s10895-018-02336-2

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页码：265 / 270

页数：6

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