Carbon Dots and Fluorescein: The Ideal FRET Pair for the Fabrication of a Precise and Fully Reversible Ammonia Sensor

Proceedings

Huizhang Guo¹  Chao-Peng Hsu²  Haijiang Zhang²  Zahralsaadat Hejazi²  Efe Armagan²  Lukas Weidenbacher²  Luciano F. Boesel²  Claudio Toncelli²  René M. Rossi²  Michel Schmid²  Matthias M. Koebel³  Shanyu Zhao³ 

[1] Institute for Building Materials, ETH Zürich, Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland;Laboratory for Biomimetic Membranes and Textiles, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland;Laboratory for Building Energy Materials and Components, Empa Swiss Federal Laboratories for Material Science & Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland;

关键词: carbon dots;    ammonia sensor;    Förster resonance energy transfer;   

DOI  :  10.3390/proceedings1040488

来源: DOAJ

【 摘 要 】

Monitoring of ammonia in the human breath is of paramount importance to monitor diseases link to liver and kidney mulfunctioning. The present paper describes a solid-state optical ammonia sensor based on Förster resonance energy transfer (FRET) between narrowly dispersed blue-emitting carbon nanodots (CNDs) as FRET donor and fluorescein as FRET acceptor. The fluorophores were physically entrapped in a close to superhydrophobic sol-gel matrix, in turn deposited on a PVDF-HFP electrospun fiber membrane. The sensor shows a linear calibration with a remarkably low limit of detection, i.e., 110 ppb, and adequate reproducibility up to six N2/NH3 cycles.

【 授权许可】

Unknown