Dual-model spectral sensing of D-fructose of a large linear range

The separation and recognition of fructose with a large linear detection range, low cost and less time consuming are more concerned in sugar industry production and monitoring of sugar intake in daily diet. In this study, monodisperse and fluorescent microspheres of poly (DVB-co-PBA) were synthesized by a one-step solvothermal reaction. The morphology, surface chemical properties, thermal stability and hydrophilicity of poly(DVB-co-PBA) microspheres were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis and water contact angle measurement, respectively. The fluorescent poly(DVB-co-PBA) microspheres with structured morphology, narrow diameter distribution and thermal stability could be applied for separation and recognition of sugar. A dual-model spectral detection of D-fructose was established with a large linear range (fluorescence measurement of 0.5 ~ 10 mg mL−1 and UV–VIS detection of 15 ~ 415 mg mL−1). Further, for the extended application of poly(DVB-co-PBA) microspheres, we investigated the applicability of synthetic materials in neutral water and doped the poly(DVB-co-PBA) microspheres with three types of fluorescent nanomaterials by coloring.