Fluorescence enhancement of silver nanoparticles using DNA as a stabilizing agent

2010 ◽  
Author(s):  
Nithyaja B. ◽  
Misha H. ◽  
V. P. N. Nampoori
Keyword(s):  
Silver Nanoparticles ◽  
Fluorescence Enhancement ◽  
Stabilizing Agent

Fluorescence Enhancement of Modified Silver Nanoparticles

2011 ◽  
Vol 11 (11) ◽  
pp. 9721-9724 ◽  
Author(s):  
Meicen Liu ◽  
Zhenglong Zhang ◽  
Gaining Liu ◽  
Jun Dong ◽  
Yu Sun ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Fluorescence Enhancement

scholarly journals The Synthesis and Stability Study of Silver Nanoparticles Prepared by Using p-Aminobenzoic Acid as Reducing and Stabilizing Agent

2018 ◽  
Vol 18 (3) ◽  
pp. 421 ◽  
Author(s):  
Dian Susanthy ◽  
Sri Juari Santosa ◽  
Eko Sri Kunarti
Keyword(s):  
Silver Nanoparticles ◽  
Reaction Time ◽  
Silver Nitrate ◽  
Tap Water ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Stability Study ◽  
Synthesis Process ◽  
Aminobenzoic Acid ◽  
Stabilizing Agent

A study to examine the performance of p-aminobenzoic acid as both reducing agent for silver nitrate to silver nanoparticles (AgNPs) and stabilizing agent for the formed AgNPs has been done. The synthesis of AgNPs was performed by mixing silver nitrate solution as precursor with p-aminobenzoic acid solution and heating it in a boiling water bath. After the solution turned to yellow, the reaction stopped by cooling it in tap water. The formed AgNPs were analyzed by using UV-Vis spectrophotometry to evaluate their SPR absorption in wavelength range of 400–500 nm. The synthesis process was highly depend on the pH, reaction time, and mole ratios of the reactants. The synthesis only occur in pH 11 and at reaction time 30 min, the particle size of the formed AgNPs was 12 ± 7 nm. Longer reaction time increased the reducing performance of p-aminobenzoic acid in AgNPs synthesis but decreased its stabilizing performance. The increase of silver nitrate amount relative to p-aminobenzoic acid in the synthesis increased the reducing and stabilizing performance of p-aminobenzoic acid and the optimum mole ratio between AgNO3 and p-aminobenzoic acid was 5:100 (AgNO3 to p-aminobenzoic acid).

scholarly journals Green Synthesis of Silver Nanoparticles in the Presence of Polysaccharide: Optimization and Characterization

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Margarita I. Skiba ◽  
Victoria I. Vorobyova ◽  
Alexander Pivovarov ◽  
Natalya P. Makarshenko
Keyword(s):  
Silver Nanoparticles ◽  
Sodium Alginate ◽  
Xrd Analysis ◽  
Face Centered Cubic ◽  
Colloidal Solutions ◽  
Ag Nps ◽  
Sem Images ◽  
Spherical Powder ◽  
Stabilizing Agent ◽  
Vis Spectroscopy

The process of obtaining aqueous solutions of silver nanoparticles with the use of a low-temperature nonequilibrium contact plasma and stabilizing agent—polysaccharide (sodium alginate)—has been examined. The synthesized Ag NPs were characterized by using UV-Vis spectroscopy, dynamic light scattering (DLS), scanning electron microscope (SEM), and XRD analysis. The effect of concentration of Ag+, sodium alginate, duration of processing by plasma discharge, and pH of liquid on the production of silver nanoparticles has been studied. The results demonstrated that synthesis provides the formation of silver nanoparticles for investigated concentrations of Ag+ (0.3-3.0 mmol/l) and 5.0 g/l Na-Alg (pH=7–10) within 1–5 minutes. From the SEM images, the silver nanoparticles are found to be almost spherical. Powder XRD results reveal that Ag nanoparticles have a face-centered cubic crystal structure. Zeta potential of plasma-chemically obtained colloidal solutions at various concentrations of Ag+ ions and stabilizing agent varies from −32.8 to −39.3 mV, indicating the moderate stability of synthesized nanoparticles.

Synthesis of bioactive silver nanoparticles using alginate, fucoidan and laminaran from brown algae as a reducing and stabilizing agent

2020 ◽  
Vol 245 ◽  
pp. 116547 ◽  
Author(s):  
Y.A. Yugay ◽  
R.V. Usoltseva ◽  
V.E. Silant'ev ◽  
A.E. Egorova ◽  
A.A. Karabtsov ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Brown Algae ◽  
Stabilizing Agent

Integral fluorescence enhancement by silver nanoparticles controlled via PMMA matrix

2011 ◽  
Vol 284 (1) ◽  
pp. 494-497 ◽  
Author(s):  
Yan Jie ◽  
Lu Yonghua ◽  
Wang Pei ◽  
Ming Hai
Keyword(s):  
Silver Nanoparticles ◽  
Fluorescence Enhancement ◽  
Pmma Matrix
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