Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 66-71-7, is researched, SMILESS is C1=CC3=C(C2=NC=CC=C12)N=CC=C3, Molecular C12H8N2Journal, Article, International Journal of Biological Macromolecules called Lignin-based fluorescence-switchable graphene quantum dots for Fe3+ and ascorbic acid detection, Author is Zhu, Lingyan; Li, Dongbing; Lu, Heng; Zhang, Shangkun; Gao, Hao, the main research direction is lignin fluorescence graphene quantum dot ascorbic acid detection; Alkali lignin; Fluorescence sensing; Graphene quantum dots.Quality Control of 1,10-Phenanthroline.
The synthesis of lignin-based graphene quantum dots (GQDs) with excellent fluorescence stability, quantum yield, and biocompatibility for sensitive and selective detection of Fe3+ and ascorbic acid (AA) has remained a challenging endeavor. Using an acidolysis process with 17.5% nitric acid followed by hydrothermal treatment at 200 °C, this study provided an improved synthesis route for the production of high-quality GQDs from alkali lignin. The nitrogen-doped GQDs exhibit remarkable fluorescence stability under a wide range of pH (3-10), duration (1-12 h), and [NaCl] (0-1000 mM) conditions, and have a high quantum yield of 28%. The GQDs or GQDs/Fe3+ sensing systems ([GQDs] at 50 mg L-1, [Fe3+] at 500 °mol L-1, and UV excitation at 370 nm) for fluorescence sensing of Fe3+ or AA have excellent sensitivity, selectivity, and reproducibility. For Fe3+ and AA, the limit of detection is 1.49 and 1.62 °mol L-1, resp. Mechanism investigation shows that photoluminescence quenching is caused by the formation of GQDs-Fe3+ complexes, whereas fluorescence recovery is due to Fe3+ reduction by AA.
As far as I know, this compound(66-71-7)Quality Control of 1,10-Phenanthroline can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics