Quantum mechanics

Catalysis

Adsorption

Engineering

Tryptamine

Materials science

Chromatography

Small molecule

Molecularly imprinted polymer

Biochemistry

Molecule

Chemical engineering

Molecular recognition

Polymer

Combinatorial chemistry

Physics

Nanotechnology

Organic chemistry

Molecular imprinting

Fluorescence

Chemistry

Selectivity

Covalent bond

Detection limit

Organic polymer

Sensors and Actuators B Chemical

A rapid optosensing detection method for tryptamine (TRY) based on one-pot surface-imprinting synthesis methods has been developed. The optosensor consists of molecularly imprinted polymers (MIPs) based on carbon dots (CNs)-embedded covalent-organic frameworks (COFs). The principle of operation depends on adsorbents providing a large number of accessible recognition sites with high affinity and specificity, to achieve both a rapid uptake of and high capacity for TRY. After removing the template molecules, the desired molecular cavities were selected and fixed in a distinct manner to provide a defined chemical microenvironment for the reversible binding of the TRY target molecules. The optosensing system relied on the linear relationship between the fluorescence intensity of the TRY-imprinted polymers and the concentration of TRY in the range of 0.025–0.4 mg kg−1with a detection limit of 7 μg kg−1. The system was used for efficiently detecting TRY in meat samples with recovery values from 91.42% to 119.80%.

Rapid detection of tryptamine by optosensor with molecularly imprinted polymers based on carbon dots-embedded covalent-organic frameworks