5.2.1 - Bioelectronic Sensors for Understanding Plant Stress Responses

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Lectures

Chapter

Emerging Sensor Materials

Author(s)

E. Stavrinidou - Linköping University,Norrköping (Sweden)

Pages

168 - 168

DOI

10.5162/eurosensors2026/5.2.1

ISBN

978-3-910600-12-6

Price

free

Abstract

The project focus on the fluorescence biosensing via Fluorescence Resonance Energy Transfer (FRET) mechanism based on the fluorescence quenching and recovery. There have been several reports based on the applications of transition metal chalcogenides (TMDs) 2-Dimensional nanosheets (2D-NSs) for FRET based fluorescence-based sensing for varieties of Nucleic Acid, proteins, food toxins, pesticides, and wide varieties of biomolecules, etc, [1-4]. But the application of fluorescence biosensor in physiological or real samples is a big challenge because of the interference from the complex matrix of sensing medium. To solve this issue, the present study focuses on the introduction of antifouling agent (polyethylene glycol) in the biosensing system. The polyethylene glycol modification enhances the stability and detection sensitivity by preventing the aggregation of 2DNSs and minimizing the interferences in the complex matrix. TMDs single crystals have been grown via chemical vapor transport method followed by exfoliation to form nano-sheets via ultrasonication method and then PEGylated nanosheets were prepared. Then, multiplexed detection of aflatoxins in diverse complex sensing mediums based on the high fluorescence quenching abilities and affinities towards the aptamers was demonstrated via PEGylated nanosheets...