Enhanced electrochemiluminescence of CdSe quantum dots composited with graphene oxide and chitosan for sensitive sensor

Quantum Dots in Bioanalysis: A Review of Applications across Various Platforms for Fluorescence Spectroscopy and Imaging

“…The incorporation with other nanomaterials (e.g., carbon nanotubes, nanoflowers, graphene oxide, gold nanoparticles) is often observed to enhance ECL intensi- ties. [158][159][160][161] The origin of ECL from QDs is strongly sensitive to surface chemistry and surface states. For example, in initial reports, ECL from CdSe QDs was observed from band gap states, 162 whereas ECL from CdSe/ZnS QDs corresponded to band-edge emission.…”

An enhanced electrochemical platform based on graphene oxide and multi-walled carbon nanotubes nanocomposite for sensitive determination of Sunset Yellow and Tartrazine

“…Considering its low manufacturing costs, large specific surface area, long-term stability and the amphiphilic nature, GO is expected to be an attractive material for electrochemical sensor and electrocatalysis (Liu, Yu, Zeng, Miao, & Dai, 2010). Biocompatible GO sheets as a sensor platform not only present an abundant domain for biomolecular binding, but also play a role of signal amplification in electrochemical detection (Du et al, 2010(Du et al, , 2011Wang et al, 2012). Nevertheless, the further application of GO in electrochemical active materials and devices is limited by its insulating property associated with the presence of carboxyl, hydroxyl, or epoxy groups in GO sheets.…”

A sensitive electrochemiluminescence cytosensor for quantitative evaluation of epidermal growth factor receptor expressed on cell surfaces

“…It is attracted considerable interest and has been widely used in immunoassay [8,9], DNA analysis [10], clinical diagnosis [9,11], carbohydrate analysis [12] and cytosensing [11,13]. Although Han et al [14] have used ECL technique monitor the cell-surface carbohydrate expression [15].…”

“…Graphene oxide (GO), a two-dimensional nanocarbon material produced by the oxidation of graphite, contains hydroxyl and epoxide functional groups on their basal planes. Due to its unique and excellent electronic, high surface area, and negatively charges on the surface, GO as interface composites has received tremendous attention in biosensor [12]. Gold nanoparticle (AuNP) is an ideal immobilized matrix due to its inherent advantage, such as easy preparation, good biocompatibility, and it has excellent adsorption for protein, DNA and other biomolecules.…”