Photoelectrochemical biosensing platform based on in situ generated ultrathin covalent organic framework film and AgInS2 QDs for dual target detection of HIV and CEA

Recent bio-applications of covalent organic framework-based nanomaterials

“…Recently, COFbased biosensors have emerged as a novel class of biosensors for disease diagnosis, drug development guidance, and disease monitoring. [121][122][123] First of all, due to the presence of a high degree of conjugation, COFs can inherently exhibit strong fluorescence properties for biosensing applications. Moreover, the regular arrangement of COF pores together with the abundance of specific binding sites enables selective adsorption of biomarkers on COFs, which leads to changes in the optical or electrical properties of COF-based probes.…”

Recent advances in photoelectrochemical platforms based on porous materials for environmental pollutant detection

“…Moreover, the electronic interactions between the COF layers are realized by the p-stacked aromatic subunits, providing sufficient channels for charge transport. [130][131][132] So far, several COFs have been employed in the eld of PEC detection, such as D-TA COF, 133,134 TAPP-COF, 124 TTPA-COF, 135 F-COF, 125 pbqy-COF, 136 and PFA-130. 137 However, the studies on PEC sensors based on covalent organic frameworks for tracing environmental pollutants are still in their early stages, as summarized in Table 6.…”

A multifunctional electrochemiluminescence and photoelectrochemical biosensor based on a quantum dot ion-exchange reaction for two-channel detection of thrombin

“…Under the excitation of blue light, electrons transferred from the valence band (VB) of CdTe to the conduction band (CB), resulting in the formation of photoelectron holes in the VB, while dissolved oxygen consumed electrons in the CB. 31 Abundant electrons transferred from the electrode to the VB to neutralise h + , generating a cathodic photocurrent. Fig.…”