A novel label-free solid-state electrochemiluminescence sensor based on the resonance energy transfer from Ru(bpy)32+ to GO for DNA hybridization detection

Electrochemiluminescence Immunosensor Based on Nanobody and Au/CaCO3 Synthesized Using Waste Eggshells for Ultrasensitive Detection of Ochratoxin A

“…Previously, the Nafion cation-exchange membrane method is usually used for immobilizing Ru­(bpy) 3 2+, . − However, this approach has some drawbacks, such as time-consuming, reagent-consuming, and luminescent reagent fixed easily falling off. In recent years, different nanomaterials is used as carriers in immobilizing Ru­(bpy) 3 2+ to improve the ECL performance, for example, silica nanoparticles (SiO 2 NPs), − metal–organic frameworks (MOFs), − poly­(amidoamine dendrimer) (PAMAM), , and metal nanomaterials. , Among these nanomaterials, unique metal nanomaterials using waste eggshells as a template to prepare a series of Ag/eggshell, Pt/eggshell, and Au/eggshell nanocomposites have attracted the attention of a lot of researchers. Compared with other precious metal nanoparticles, Au nanoparticles have special merits because of their high catalytic activity and excellent electrical conductivity .…”

TNT Sensor: Stern–Volmer Analysis of Luminescence Quenching of Ruthenium Bipyridine

“…[Ru­(bpy) 3 ] 2+ , the luminescent molecule that will function as our sensor, is an inorganic complex composed of three bipyridine chelating ligands bound to ruthenium (Figure ). It is the Ru–ligand bond that allows the complex to absorb light, thus giving [Ru­(bpy) 3 ] 2+ many of its most useful properties. , Other key properties of the complex include its stability and kinetic inertness, thus making it a valuable molecule for sensor use. ,, [Ru­(bpy) 3 ] 2+ also has the ability to react via resonance energy transfer . Beyond the scope of TNT detection, [Ru­(bpy) 3 ] 2+ can be used to detect and label DNA, cause apoptosis of cancer cells, be used in efficient solar cells, and can also be used as a photocatalyst for the breakdown of water into H 2 and O 2 . ,− Therefore, the selection of [Ru­(bpy) 3 ] 2+ as the sensor not only exposes students to a well-known and useful molecule but also creates an interdisciplinary lab in which students synthesize an inorganic complex to then investigate using techniques from physical chemistry.…”

Photoelectrochemical Sensor for Isoniazid: Application in Drugs Used in the Treatment of Tuberculosis

“…Besides that, the band alignment between CdTe‐QDs and TiO 2 is beneficial for the electron transfer from the photoexcited CdTe‐QDs to TiO 2 [42] leading to the improved performance of composite systems. On the other hand, tris‐2,2′‐bipyridyl dichlororuthenium (II) hexahydrate, denoted as Ru(bpy) 3 2+ , has been used as luminophore in the development of ECL based systems and it has been exploited as photosensitizer in PEC sensors for the detection of important biomolecules due to its interesting physical and chemical properties [43–51]. In this context, the present work aims the development of a PEC sensor for INH detection, based on the composite material TiO 2 , CdTe‐QDs and Ru(bpy) 3 2+ on a FTO electrode (represented in this work as Ru(bpy) 3 2+ /CdTe‐QDs/TiO 2 /FTO PEC sensor) exploring visible LED light of low cost.…”

“…Besides that, the band alignment between CdTe-QDs and TiO 2 is beneficial for the electron transfer from the photoexcited CdTe-QDs to TiO 2 [42] leading to the improved performance of composite systems. On the other hand, tris-2,2'-bipyridyl dichlororuthenium (II) hexahydrate, denoted as Ru(bpy) 3 2 + , has been used as luminophore in the development of ECL based systems and it has been exploited as photosensitizer in PEC sensors for the detection of important biomolecules due to its interesting physical and chemical properties [43][44][45][46][47][48][49][50][51]…”