A near-infrared light-driven photoelectrochemical aptasensing platform for adenosine triphosphate detection based on Yb-doped Bi₂S₃ nanorods

Abstract

Near-infrared (NIR) light is advantageous in biosensing and biochemical analysis. This work developed a photoelectrochemical (PEC) aptasensor for adenosine triphosphate (ATP) detection using NIR light as the irradiation source. In...

Advances in the optical and electronic properties and applications of bismuth-based semiconductor materials

“…59 However, the narrow band gap of Bi 2 S 3 leads to fast electron-hole recombination, reducing response speed and photocatalytic efficiency. 12 To suppress recombination, approaches like element doping, 60 conductive material modification, 61 and heterojunction structures [62][63][64][65] have been investigated. For example, modified SrTiO 3 /Bi 2 S 3 heterojunctions exhibit lower carrier recombination and electron transfer resistance than pure SrTiO 3 and Bi 2 S 3 , promoting UV-driven hydrogen production by effectively separating photogenerated carriers.…”

Electrical Nanobiosensors for Nucleic Acid Based Diagnostics

“…When the light signal is stimulated, the photoelectric active substance reacts with the electrolyte, and then converts the light signal into photocurrent. 69 Yu and his team combined nanozyme with a paper-based PEC sensor and successfully used it to detect the concentration of miRNA-141 (Figure 3a). 13 Before the target sequence is introduced, a large amount of insoluble precipitate covers the electrode surface and the photocurrent is small.…”

“…The PEC biosensing platform is mainly composed of excitation light source, electrolyte and three-electrode system modified with photoelectric conversion materials. When the light signal is stimulated, the photoelectric active substance reacts with the electrolyte, and then converts the light signal into photocurrent . Yu and his team combined nanozyme with a paper-based PEC sensor and successfully used it to detect the concentration of miRNA-141 (Figure a) .…”

A Controlled Release Aptasensor Utilizing AIE-Active MOFs as High-Efficiency ECL Nanoprobe for the Sensitive Detection of Adenosine Triphosphate

“…Herein, we present a novel controlled release ECL aptasensor employing AIEgens-based MOFs as high-efficiency luminophores for the sensitive detection of adenosine triphosphate (ATP), a crucial molecule implicated in some diseases such as cancers, ischemia, and hypoglycemia. − As depicted in Scheme , with 4′,4‴,4‴″,4‴‴′′-(ethene-1,1,2,2-tetrayl)­tetrakis­([1,1′-biphenyl]-3-carboxylic acid) (H 4 ETTC) as ligands, Zr-MOF was facilely prepared via a hydrothermal method and coated on the electrode as ECL emitters under exogenous coreactant-free conditions. Then, through robust coordination between Zr 4+ ions and phosphate groups, ATP targets can be directly immobilized onto the electrode without the need for any coupling agents.…”