A Versatile Optical Fiber Sensor Comprising an Excitation-Independent Carbon Quantum Dots/Cellulose Acetate Composite Film for Adrenaline Detection

被引：4
|
作者：
Xiong, Huizhi [1 ]
Ding, Liyun [1 ]
Xu, Bing [1 ]
Liang, Bing [2 ]
Yuan, Fang [2 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Peoples R China
[2] Shandong Univ Qingdao, Cheeloo Coll Med, Dept Neurol, Qilu Hosp, Qingdao 266000, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2021年 / 21卷 / 09期
关键词：
Optical fiber sensors; Optical fibers; Fluorescence; Scanning electron microscopy; Optical films; Optical attenuators; Biosensors; Optical fiber sensor; adrenaline detection; carbon quantum dots;
D O I：
10.1109/JSEN.2021.3054410
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel optical sensor was constructed for the detection of adrenaline (AD) by immobilizing a carbon quantum dots (CQDs)/cellulose acetate (CA) composite film on the tip of an optical fiber via dip-coating method. The emission wavelength of the CQDs was stabled at about 520 nm when it was excited from 410 to 490 nm, showing a special excitation independent characteristic. The fluorescence intensity of the CQDs quenched by AD with high selectivity leads to development of a novel sensitive method for the AD detection. The fluorescence intensity of the optical sensor has a good linear response to the concentration of adrenaline in the range of 5 mu M to 45 mu M (R-2 = 0.99875). This investigation illustrates that optical fiber sensor platform may have great potential for the detection of AD in biomedical fields.
引用
收藏
页码：10392 / 10399
页数：8
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