What category of nanoparticle is a dendrimer?

Abstract. Dendrimers are nano-sized, radially symmetric molecules with well-defined, homogeneous, and monodisperse structure that has a typically symmetric core, an inner shell, and an outer shell.

How do you stabilize silver nanoparticles?

Spherical morphology for silver nanoparticles (Ag NPs) stabilized with dithiocarbamate (DTC) by reducing silver nitrate with sodium borohydride was obtained, while the addition of sodium citrate and hydrogen peroxide allowed the formation of silver nanotriangles (Ag NTs).

What are silver nanoparticles used for?

Silver nanoparticles (AgNPs) are increasingly used in various fields, including medical, food, health care, consumer, and industrial purposes, due to their unique physical and chemical properties. These include optical, electrical, and thermal, high electrical conductivity, and biological properties [1,2,3].

How do you precipitate silver nanoparticles?

Silver nanoparticles were precipitated at 70°C in a reverse microemulsion containing a high concentration of 0.5 M silver nitrate aqueous solution, toluene as organic phase, and a mixture of surfactants sodium bis (2-ethylhexyl) sulfosuccinate/sodium dodecyl sulfate (2/1, w/w).

Are silver nanoparticles toxic?

Ag NPs are significantly more toxic than Ag+ to prokaryotic cells and have been shown to be effective bactericides at nanomolar concentrations, compared with micromolar levels for Ag+ [25–27].

What is the size of dendrimer nanoparticles?

The electron microscopy sizing data of dendrimer nanoparticles and dendriplexes demonstrated particle sizes of about 20 nm and 100–200 nm, and the dendriplex agglomeration was about 500 nm (Figure 3). The zeta potentials of TNF-TK, TNF, and TK were 6.49 ± 0.83 mV, 6.71 ± 0.77 mV, and 7.91 ± 1.60 mV, respectively.

Which dendrimer nanoparticles are best for tumor cell destruction after irradiation?

The present study indicated that the pEgr-1-TNFα-TK group had the best effect of destroying tumor cells after irradiation, and that dendrimer nanoparticles provided an efficient and safe avenue to deliver genes into target cells. Acknowledgments

What are the applications of silver nanoparticles in dentistry?

Silver nanoparticles have been determined to have potential applications in dentistry through their ability to kill microbes or inhibit their growth. Moreover, the role of silver nanoparticles in areas including endodontics [155,156] and dental prostheses [175] has been noted.

What is the main ingredient in silver nanoparticles?

These ingredients include lignin, hemicellulose and pectins, which have been shown to have a clear role in the reduction of silver ions [59]. In a recent study, silver nanoparticles were synthesised using an aqueous solution of the plant extract of Saudi Arabia Origanum vulgareL.