Water-soluble diboronic acid-based fluorescent sensors recognizing <scp>d</scp>-sorbitol
作者:Guiqian Fang、Zhancun Bian、Daili Liu、Guiying Wu、Hao Wang、Zhongyu Wu、Qingqiang Yao
DOI:10.1039/c9nj02636c
日期:——
D-sorbitol in aqueous solution. The fluorescence of sensor 15c was enhanced by 1.5-fold when combined with a low concentration of D-sorbitol (8.88 μM), and the fluorescence enhanced by 0.6-fold after binding to D-fructose, while it did not change obviously when combined with other carbohydrates, including D-arabinose, D-galactose, D-mannose, D-ribose, D-maltose, D-xylose, D-glucose and D-glucosamine.
在本文中,报道了几种基于硼酸的传感器选择性地识别水溶液中的D-山梨糖醇。与低浓度的D-山梨糖醇(8.88μM)结合时,传感器15c的荧光增强1.5倍,与D-果糖结合后,荧光增强0.6倍,而与D-果糖结合时则无明显变化。其他碳水化合物,包括D-阿拉伯糖,D-半乳糖,D-甘露糖,D-核糖,D-麦芽糖,D-木糖,D-葡萄糖和D-氨基葡萄糖。在DMSO / PBS(pH 9,0.1 M)溶液(1:99,v / v)中于室温进行荧光测试,这表明传感器是水溶性的。此外,竞争研究表明,在不存在和存在碳水化合物干扰物的情况下,传感器15c均可作为D-山梨糖醇特异性荧光传感器很好地发挥作用。和传感器15c中具有高的结合常数(10 922±776中号-1)和检测的下限(6.91×10 -7,在pH 9向调查传感器之间M)d -山梨醇。此外,传感器15c应用于真实样品的分析(D-山梨糖醇口服)。这些研究表明,传