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Yang Q, Li J, Wang X, Xiong H, Chen L. Ternary Emission of a Blue-, Green-, and Red-Based Molecular Imprinting Fluorescence Sensor for the Multiplexed and Visual Detection of Bovine Hemoglobin. Anal Chem 2019; 91:6561-6568. [PMID: 31010290 DOI: 10.1021/acs.analchem.9b00082] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel ternary-emission fluorescence sensor was proposed by post-imprinting mixing blue-/green-/red-emission bovine hemoglobin (BHb) imprinted polymers (b-MIPs, g-MIPs, and r-MIPs) at a proper ratio and realized the multiplexed and visual detection of BHb. The three MIPs were individually embedded with blue-emission 7-hydroxycoumarin, green-emission CdTe quantum dots (QDs), and red-emission CdTe/ZnS QDs. Upon interaction with BHb within 8 min, the fluorescence of CdTe and CdTe/ZnS QDs were simultaneously turned off, whereas the 7-hydroxycoumarin turned on the fluorescence intensity. Thereupon, the ratiometric fluorescence intensity of the ternary emission linearly varied within 0.025-3 μM BHb, accompanying the profuse fluorescence color evolution from yellowish green to yellow to salmon to plum to purple to finally blue. In comparison with the dual- or single-emission sensor, the ternary-emission fluorescence MIPs sensor provided a wider color variation covering the green-red-blue window for accurate naked-eye determination of BHb, as well as a lower detection limit down to 7.8 nM and a higher imprinting factor of 15.2. Moreover, the satisfactory recoveries of 99.25-111.7% in determining the spiked BHb in bovine urine samples, as well as the optical stability and post-imprinting construction convenience, indicated that the developed tricolor-emission fluorescence MIPs sensor provided an ideal alternative for rapid, sensitive, and visual determination of proteins in complicated samples.
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Affiliation(s)
- Qian Yang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , People's Republic of China
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , People's Republic of China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , People's Republic of China
| | - Xiaoyan Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , People's Republic of China
- School of Pharmacy , Binzhou Medical University , Yantai 264003 , People's Republic of China
| | - Hua Xiong
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , People's Republic of China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , People's Republic of China
- Laboratory for Marine Biology and Biotechnology , Pilot National Laboratory for Marine Science and Technology , Qingdao 13266237 , People's Republic of China
- Center for Ocean Mega-Science , Chinese Academy of Sciences , 7 Nanhai Road , Qingdao 266071 , People's Republic of China
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