Preparation of fluorescein-modified polymer dots and their application in chiral discrimination of lysine enantiomers

Fluorescent Nitrogen‐Doped Carbon Dots as Nanosensors for the Detection of Fe3+ Ions

“…The intensity ratio I D / I G was 0.80, which reveals that an amorphous carbon phase exists in the N‐CDs. [ 36–38 ]…”

“…The intensity ratio I D /I G was 0.80, which reveals that an amorphous carbon phase exists in the N-CDs. [36][37][38] To investigate the functional units and chemical state of the N-CDs, FTIR and XPS analytical methods were carried out. Characteristic absorption peaks at 3419 and 3142 cm À1 stand for the stretching vibrations of O-H and N-H bonds (Figure S1, Supporting Information).…”

Metal-assisted core–shell plasmonic nanoparticles for small molecule biothiol analysis and enantioselective recognition

“…23,24 Inorganic metals (e.g., Cu, and CaCO 3 ) and metal ions (e.g., Cu 2+ ) are often used to assist in enantioselective amino acid recognition owing to the different surface absorption of amino acid enantiomers. 25,26 The chemical activity of dopamine is derived from its own catechol and primary amine fractions, which undergo oxidative self-polymerization of amines or catechol at room temperature to form a polymer layer with high adhesive properties. Thus, altering its surface properties has been widely investigated.…”

Modifying carbon dots with l-phenylalanine for rapid discrimination of tryptophan enantiomers

“…13,14 Among these methods, fluorescence spectroscopy has gained significant attention due to its high sensitivity and selectivity, easy sample processing, in situ detection and so on. 15,16 Recently, some fluorescent nanosensors for discriminating Trp enantiomers have been reported. For example, Tashkhourian's group synthesized l - and d -cysteine-capped CdSe quantum dots for chiral recognition of Trp enantiomers by fluorometry.…”