Carbon dots and ruthenium doped oxygen sensitive nanofibrous membranes for monitoring the respiration of agricultural products

Polymer Testing

卷:93

Xiaozhong Qu¹  Zheng Xie¹  Yulong Xu²  Shaosen Huo²  Yong Liu²  Zhiyuan Chen²  Di Yang³  Ningxiao Gao⁴  Junkai Ren⁵  Shuyun Zhou⁵ 

[1] Corresponding author.;

[2] Beijing Key Laboratory of Advanced Functional Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China;

[3] Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China;

[4] College of Mechanical and Electric Engineering, Beijing University of Chemical Technology, Beijing, 100029, China;

[5] Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;

关键词: Electrospun fibrous membrane;    Oxygen sensitive nanofibers;    Optical sensor;    Ratiometric imaging;    Food respiration monitoring;   

DOI  :  

来源: DOAJ

【 摘 要 】

During the storage of agricultural products, the oxygen concentration in the packages represents the level of food respiration and hence indicates its freshness. Herein, self-referenced photoluminescent oxygen sensitive fibrous membranes were prepared, with the inclusion of an oxygen-sensitive probe, i.e. tris (4,7-diphenyl-1,10-phenanthroline) ruthenium (II) dichloride (RuDPP), with an oxygen-insensitive luminophore, i.e. silane-functionalized carbon dots (SiCDs). Silicone was selected as the matrix, obtained via sol-gel process, and was electrospun to get nanofibers containing mesoporous microstructure and with high oxygen permeability. The as-prepared RuDPP@SiCDs/SiO2 fibrous membranes possessed hydrophobicity and exhibited ideal oxygen sensitivity, which realized a remote evaluation of the freshness of packaged fruits, through ratiometric photoluminescence imaging on the concentration change of environmental oxygen. The results indicate that such kind of oxygen-sensitive fiber membranes are capable as an optical oxygen sensor for agricultural applications.

【 授权许可】

Unknown