Fluorescent nanostructures based on folic acid and citrate: Synthesis and properties

One-pot hydrothermal synthesis of fluorophore-modified cerium oxide nanoparticles

“…34,35 For the synthesis of IPCA temperature, processing time, and reagent ratio can be varied. 33,35,38,45 In our previous study it was found that during hydrothermal synthesis at 180 1C for 3 hours 37 and a ratio of CA to EDA of 1 : 1.5, 46 the molecular fluorophore IPCA is formed as the main product. In this regard, we used these conditions to obtain CeO 2 NPs modified by IPCA (CeO 2 -IPCA NPs).…”

“…Carbon nanostructures (CNSs) are currently promising fluorescent materials for a wide range of applications, particularly in biomedicine, due to their well-documented biocompatibility. [27][28][29] CNSs are small crystalline or amorphous carbon-based NPs (typically less than 10 nm in size) that can be easily synthesized using a range of cost-effective and simple methods and maintain colloidal stability in a wide range of solvents due to appropriate surface functional groups. 27,30,31 Fluorescence with a quantum yield of up to 94% 32 was obtained for CNSs prepared from citric acid and 1,2-ethylenediamine, with the molecular fluorophore 1,2,3,5-tetrahydro-5-oxoimidazo [1,2-a]pyridine-7-carboxylic acid (IPCA) 33 after hydrothermal treatment.…”

“…[34][35][36] This fluorophore can be in an unbound state or be associated with various structures by non-covalent or covalent bonds. 37,38 The binding of IPCA to various surfaces results in a high and stable fluorescence.…”