Near‐infrared Responsive Photoelectrochemical Biosensors

Abstract

Near-infrared (NIR) light-driven photoelectrochemical (PEC) sensing is a highly promising analytical technique, especially for in situ bioanalysis, due to the deep penetration capability and minimal invasiveness of NIR light. In this mini review, we provide a brief overview of recently developed NIR PEC sensors, focusing on NIR light-responsive materials and the representative applications of this type of PEC sensor. Future perspectives for NIR PEC sensors are also described.

KuQuinones: a ten years tale of the new pentacyclic quinoid compound

“…In recent years, photoelectrochemical (PEC) sensing has emerged as new analytical method because of its high signal-tonoise ratio and sensitivity. 88 However, within dye sensitized PEC sensors, only few papers have been reported, [89][90][91][92] and the number is even less when considering a metal-free dye sensitized PEC sensor. [93][94][95][96][97] In the framework of photoelectrochemical applications, recently KuQ3CO 2 H has been employed as dye in the rst photoelectrochemical (bio)sensor for ethanol detection (Fig.…”

Near-infrared light induced curing of electrically conductive adhesive assisted by upconversion particles

“…Therefore, using a NIR light source instead of a UV light source can greatly increase the light penetration depth and reduce the negative effects caused by conductive fillers. 13,14 Upconversion nanoparticles (UCNPs) can absorb NIR light and convert it into blue-violet light. [15][16][17][18] Stepuk et al 19 applied this feature to photochemical reactions to achieve efficient curing of polymers.…”

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

“…5,6 By contrast, near-infrared (NIR) light has the capability of low phototoxicity, deep tissue penetration, and minimal photodamage to biological species, which is very attractive in biosensing. 7,8 Since a NIR-driven PEC aptasensor based on the upconversion nanoparticles and a TiO 2 /CdTe heterostructure for the detection of cancer cells was first described in 2016, 9 different NIR-active materials have been explored for PEC sensing. 10,11 For example, Zheng et al used NaYF 4 :Yb,Tm upconversion nanophosphors as signal amplification probes to develop a competitive NIR PEC immunosorbent assay for the detection of okadaic acid.…”