613-11-6Relevant articles and documents
Elucidating the chemical and biochemical applications of Citrus sinensis-mediated silver nanocrystal
Siddiqui, Nurunnesa,Masum, Abdulla Al,Uddin, Md. Raihan,Mandal, Sukhendu,Sengupta, Mohana,Islam, Md. Maidul,Mukhopadhyay, Subrata
, p. 4863 - 4874 (2019/01/24)
Synthesis of nanoparticles using biodegradable source is safer and echo-friendly. Here, we describe the synthesis of polycrystalline silver nanocrystals using Citrus sinensis acting as both reducing and capping agents. After exposing the silver ions to orange extract, rapid reduction of silver ions led to the formation of stable silver nanocrystals due to the reducing and stabilizing properties of orange fruit juice. The synthesized silver nanocrystals were characterized using various analytical techniques like UV–vis spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The biochemical activity of the synthesized nanocrystals was studied in the light of affinity to bovine serum albumin using several biophysical methods like absorbance, fluorescence and circular dichroism spectroscopy. Cytotoxic activity of these nanocrystals was also studied against Hep-2 cell line using fluorescence microscopy. It was also found that the synthesized nanocrystals can sense mercuric ion down to 50 μM in the presence of a number of cations. Furthermore, we established that the silver nanoparticles can effectively catalyse the reduction of methylene blue by ascorbic acid. The present study will enrich our knowledge on the chemical and biochemical activities of green-synthesized silver nanocrystals.
Kinetic study on the reversible hydride transfer between methylene blue and thionine
Liu,Yamamoto,Fujiyama,Sueishi
, p. 2367 - 2371 (2007/10/03)
The kinetics of the hydride transfer reaction between leuco methylene blue and thionine was investigated spectrophotometrically by means of the stopped-flow technique. Leuco methylene blue and leuco thionine were produced by photoreduction of methylene bl