Ultrasensitive PEC aptasensor based on one dimensional hierarchical SnS2|oxygen vacancy-WO3 co-sensitized by formation of a cascade structure for signal amplification

Efficient sensitization of CdTe QDs towards PTCDA for sensitive photoelectrochemical Hg2+ assay

“…Recently, extensive explorations have been carried out and the photoelectric sensitization strategy has been developed for broadening light absorption, enhancing carrier separation, and improving photoelectric conversion efficiency. [16][17][18] For example, Zhang et al proposed a PEC immunosensor based on 3,4,9,10perylene tetracarboxylic acid sensitized by SnS 2 for the sensitive detection of cytokeratin 19 fragment 21-1. 19 Hu's group reported a paper-based PEC biosensing device for microRNA-141 detection by combining the cascaded sensitized structure of ZnO/ CuInS 2 /Ag 2 Se with a nuclease-propelled target dual-recycling amplication strategy.…”

CeO2@NH2 functionalized electrodes for the rapid detection of SARS-CoV-2 spike receptor binding domain

“…[21][22][23] An aptasensor is a biosensor that uses an aptamer as a bioreceptor. [24][25][26] The size of an aptamer is smaller (2-3 nm) than an antibody (12-15 nm), thereby reducing the steric barrier to the surface of the coronavirus, which is about 100 nm. A smaller bioreceptor will enable more molecules to bind to the same surface area.…”

An ultrasensitive photo-driven self-powered aptasensor for microcystin-RR assay based on ZnIn2S4/Ti3C2 MXenes integrated with a matching capacitor for multiple signal amplification

“…So far, in order to obtain a large signal output and a low detection limit, most of the researchers have been devoted to the study of a variety of photoactive materials [23][24][25][26][27][28] and nucleic acid based signal amplification methods. 29 Although many signal amplification strategies have been proposed, there are still some limitations such as weak output signals, complicated processes and high costs, which do not meet the requirements of sensor devices.…”