Journal
BIOSENSORS & BIOELECTRONICS
Volume 79, Issue -, Pages 187-192Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2015.12.016
Keywords
Molecularly imprinted polymer; Carbon dots; Epitope approach; Fluorescent recognition
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Funding
- National Basic Research Program of China (973 Program) [2011CB707703, 2012CB910601]
- National Natural Science Foundation of China [21275078, 21475069]
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A new type of thermo-sensitive receptor carbon dots/SiO2/molecularly imprinted polymer (CDs/SiO2/ MIP) was prepared by surface imprinting procedure and the epitope approach. The synthetic CDs/SiO2/ MIP was able to selectively capture target protein with fluorescence quenching via the special interaction between them and the recognition cavities. The receptor exhibited the linear fluorescence quenching to cytochrome c (cyt c) in the range of 0.1-40 mu M, and the detection limit was 89 nM. The precision for five replicate detection of cyt cat 20 mu M was 3.11%. Moreover, the receptor owned the temperature-sensitive element that allowed for swelling and shrinking in response to temperature changes to realize recognition of the target cytochrome c. The proposed strategy revealed the feasibility of fabrication of a thermo-sensitive imprinted polymer based on CDs and surface imprinting procedure and the epitope approach. (C) 2015 Elsevier B.V. All rights reserved.
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