Low-power microwave-induced fabrication of functionalised few-layer black phosphorus electrodes: A novel route towards Haemophilus Influenzae pathogen biosensing devices - Publication - Bridge of Knowledge

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Low-power microwave-induced fabrication of functionalised few-layer black phosphorus electrodes: A novel route towards Haemophilus Influenzae pathogen biosensing devices

Abstract

In this paper, various passivation schemes were applied at few-layer black phosphorus (FLBP) to achieve covalent functionalisation with 4-azidobenzoic acid, improving its electrochemical response intended for analytical and biosensing applications. The thermal and microwave assisted modification procedures in toluene and dime-thylformamide resulted in high reversibility of reactions on functionalised FLBP using a ferricyanide/ferrocya-nide redox probe. The lowest peak-to-peak separation of 91 mV, and high kinetics were obtained by thermal synthesis in dimethylformamide. Attachment of a =N-phenylene-COOH moiety to the FLBP limits its degradation under ambient conditions delivering a linker for a peptide bond with proteins in the –NH2 groups. The functionalised FLBP was applied for impedimetric detection of the Haemophilus Influenzae (HI) bacterial protein with a low limit of detection (LOD) of 5.82 μg mL-1 along with high sensitivity equal to 1.267% μg-1 mL. The proposed strategy delivers a novel phosphorene-based electrode for sensitive detection of various bacterial pathogens.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
APPLIED SURFACE SCIENCE no. 539, pages 1 - 12,
ISSN: 0169-4332
Language:
English
Publication year:
2021
Bibliographic description:
Jakóbczyk P., Kowalski M., Brodowski M., Dettlaff A., Dec B., Nidzworski D., Ryl J., Ossowski T., Bogdanowicz R.: Low-power microwave-induced fabrication of functionalised few-layer black phosphorus electrodes: A novel route towards Haemophilus Influenzae pathogen biosensing devices// APPLIED SURFACE SCIENCE -Vol. 539, (2021), s.1-12
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.apsusc.2020.148286
Sources of funding:
Verified by:
Gdańsk University of Technology

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