Product Details of 625-82-1. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2,4-Dimethyl-1H-pyrrole, is researched, Molecular C6H9N, CAS is 625-82-1, about Reaction-based fluorescent silk probes with high sensitivity and selectivity to Hg2+ and Ag+ ions. Author is Xiao, Li; Liu, Kaiqi; Duan, Lian; Cheng, Xinjian.
The detection and removal of heavy metals in the environment is urgent and meaningful. In this work, two types of fluorescent functionalized silks OSP and ASP have been prepared using worm silk as the substrate. These fluorescent silk probes exhibit an obvious fluorescence quenching effect in the presence of Hg2+ or Ag+, enabling silk to specifically detect Hg2+ or Ag+. An obvious color response occurs under visible light, from yellow to brown or gray, thereby realizing dual-channel identification of fluorescence and colorimetry. In addition, its sensing mechanism has been studied, and it is found that the probe reacts with metal ions as a reactive response. Compared with the fluorescent probes bearing one C=C/CC bond, the probes with two terminal C=C/CC bonds are more sensitive. And the excellent recognition ability can make the limit of detection as low as 0.25 μM. This indicates that silk fluorescent probes can be used to detect Hg2+ and/or Ag+.
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