Effect of temperature on the synthesis of silver nanoparticles with polyethylene glycol: new insights into the reduction mechanism

The Role of Ligands in the Chemical Synthesis and Applications of Inorganic Nanoparticles

“…This approach is commonly employed to coat polymeric NPs, and it has also been demonstrated for the functionalization of inorganic NPs such as Au, Ag, and iron oxide. It was shown that PEG can play multiple roles simultaneously, acting as a solvent/cosolvent, a reducing agent as well as a capping agent. ,− Despite the simplicity of the experimental protocols, the PEG molecules are only weakly bound to the NPs, and thus they can easily detach from the NP surface during various processing steps (e.g., dilution/dialysis, centrifugation, heating, drying, aging, mixing with other compounds, etc.). A strategy to make a stable coating of PEGs on NPs has been recently demonstrated as illustrated in Figure .…”

Convenient conversion of hazardous nitrobenzene derivatives to aniline analogues by Ag nanoparticles, stabilized on a naturally magnetic pumice/chitosan substrate

“…Finally, the obtained magnetic particles were collected together and washed with distilled water for several times and then dried in the oven for 1 h. The synthesized composite is founded to be exceptionally stable as a result of the presence of numerous -OH groups on both VP and CTS structures, resulting in the powerful H-bindings. Previously, so many methods have been reported in which the Ag ions were stabilized and reduced to the Ag NPs by using of the different polymeric species such as polyvinyl alcohol, 52 polyethylene glycol, 53 and polyvinyl chloride. 54…”

Antibacterial coordination polymer hydrogels composed of silver(i)-PEGylated bisimidazolylbenzyl alcohol

“…To our surprise, although the critical gel concentration (CGC) of Ag(I)-1,3-bisimidazolyl benzene could be as low as 0.3 wt% at a 1 : 1 ratio of AgNO 3 : ligand, 32 when 1 : 1 ratio of AgNO 3 : ligands 1a-c was employed, even with the concentration of up to 5 wt%, no gelation occurred in water. We rationalized that the weak coordination of the PEG chains with Ag(I) might consume partial silver ions; [37][38][39] this reduced the amount of silver ions used for coordination with N to form coordination polymers and thus hindered the formation of the hydrogels. As expected, when more silver ions were added, transparent gelation was achieved under the CGCs less than 2 wt% (Table 1).…”