Graphene quantum dot‐enhanced chemiluminescence through energy and electron transfer for the sensitive detection of tyrosine

Abstract

Graphene quantum dots (GQD) could significantly enhance the chemiluminescence (CL) reaction of Ce(IV) with NaHSO3 through energy and electron transfer. The chemiluminescence resonance energy transfer (CRET) occurred between SO2*/1O2 and GQD, and radiative electron–hole annihilation came from the combining of the hole‐injected GQD (GQD•+) and electron‐injected GQD (GQD•–). Tyrosine (Tyr) is easily oxidized by OH• and Ce(IV), which results in the decrease of OH• and Ce(IV), and the CL intensity of the GQD–Ce(IV)–NaHSO3 system is inhibited by Tyr. In this way, the GQD‐based CL as a sensitive and selective method was applied for the detection of Tyr in the range 0.02–8.00 μM with the detection limit of 4.0 nM. The method was applied to the determination of Tyr in food samples with satisfactory results.

Ultrasensitive specific sensor based on all-dielectric metasurfaces in the terahertz range

“…In order to verify the specic sensing of the metasurface, tyrosine has been selected as the analyte, which plays an important role in the metabolism and growth of humans and animals. 31 Tyrosine is a key precursor for neurotransmitters and hormone such as dopamine, norepinephrine and thyroxin in mammalian central nervous systems. 32,33 Many analytical methods such as chemiluminescence detection, electrochemical sensor, spectroscopic analysis, and high performance liquid chromatography have been reported for the determination of tyrosine.…”

Engineering functionalization and properties of graphene quantum dots (GQDs) with controllable synthesis for energy and display applications

“…105 Additionally, GQDs with a band gap can exhibit chemiluminescence (CL) and electroluminescence (EL) in addition to PL. [118][119][120][121][122][123] CL involves extracting energy emitted by exothermic reactions to produce light, while EL is the phenomenon of luminescence resulting from energy transitions induced by an electric field. For instance, a recent study by Qin et al explored the CL emission in undoped GQDs, N-doped GQDs, and N,S-hetero-doped GQDs.…”

An Endoscope-like SERS Probe Based on the Focusing Effect of Silica Nanospheres for Tyrosine and Urea Detection in Sweat

“…Researchers have developed a variety of tyrosine detection methods, such as fluorescence spectroscopy [7], high performance liquid chromatography [8], electrochemical detection [9], colorimetry [10], and chemiluminescence [11]. However, these detection methods often have many disadvantages such as time-consuming detection and complex pretreatment process.…”