Carbon nanodots-based C-dips for rapid colorimetric detection of clinically important metal ions

Kuwait Journal of Science

article

Sumaira Nishat¹  Malik Waseem Abbas¹  Fazli Rabbi Awan¹  Dr Razium Ali Soomro¹ 

[1] Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences ,(NIBGE-C, PIEAS), Faisalabad

关键词: Carbon dots;    copper;    iron;    nanotechnology;    paper-based sensors;   

DOI  :  10.48129/kjs.13997

学科分类：社会科学、人文和艺术（综合）

来源: Kuwait University * Academic Publication Council

【 摘 要 】

Owing to unique physical and optical properties, fluorescent carbon dots (C-dots) are used in various biomedical applications. In this study, C-dots have been integrated as sensing agent on paper surface for colorimetric determination of clinically important analytes. Polyacrylamide-based C-dots coated C-dips showed visible color change from white to brown for iron (Fe2+, Fe3+) sample. Moreover, iron and copper (Cu2+) samples showed significant quenching of C-dots under UV. Images captured with/without UV were analyzed to study the relationship between different iron and copper concentrations and colorimetric intensity values. Color intensity and fluorescence showed a linear relationship with concentrations of iron and copper (Range: 1×10-4 to 1×10-2 M, Linearity: R2 = 0.94). LOD from the paper sensor showed a sensitivity of 3.89×10-5 μM, 4.65×10-5 μM and 6.7×10-5 μM for Fe3+, Fe2+ and Cu2+ respectively, reflecting its reliability as low-cost sensing solution to analyze clinically relevant analytes as reported in current study.

【 授权许可】

Unknown