Improved Chemical and Colloidal Stability of Gold Nanoparticles through Dendron Capping
نویسندگان
چکیده
منابع مشابه
Colloidal stability of zwitterionic polymer-grafted gold nanoparticles in water.
We investigate the colloidal stability of gold nanoparticles (AuNPs) coated with zwitterionic sulfobetaine polymers in aqueous solution. Zwitterionic polymers with different molar masses, synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of N,N'-dimethyl(methacrylamido propyl)ammonium propanesulfonate (SPP) exhibit a well known Upper Critical Solution Tempera...
متن کاملPolarity sensitive colloidal gold nanoparticles
Water soluble colloidal nanoparticles possess huge surface negative charge and this provides their colloidal stability [1]. The surface charge, therefore, ultimately demonstrate the overall behavior of the nanoparticles irrespective of core material. We demonstrate fluorescence based dual emission polarity sensor that is based upon hydroxyflavone derivative [2]. The NH2 group at position 7 faci...
متن کاملToxicity and Biokinetics of Colloidal Gold Nanoparticles
Gold nanoparticles (Au-NPs) have promising potential for diverse biological application, but it has not been completely determined whether Au-NP has potential toxicity in vitro and in vivo. In the present study, toxicity of Au-NP was evaluated in human intestinal cells as well as in rats after 14-day repeated oral administration. Biokinetic study was also performed to assess oral absorption and...
متن کاملSynthesis of tetraoctylammonium-protected gold nanoparticles with improved stability.
This paper shows that an introduction of thiosulfate anions in place of bromide anions greatly improves both chemical and thermal stability of tetraoctylammonium-protected gold nanoparticles. Tetraoctylammonium thiosulfate [(Oct)4N+-O3SS]-protected gold nanoparticles are synthesized by the reduction of (Oct)4N+-AuCl4 to Au(I)-SSO3-, followed by the addition of sodium borohydride. The presence o...
متن کاملMechano-chemical stability of gold nanoparticles coated with alkanethiolate SAMs.
Molecular dynamics simulations are used to probe the structure and stability of alkanethiolate self-assembled monolayers (SAMs) on gold nanoparticles. We observed that the surface of gold nanoparticles becomes highly corrugated by the adsorption of the SAMs. Furthermore, as the temperature is increased, the SAMs dissolve into the gold nanoparticle, creating a liquid mixture at temperatures much...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Langmuir
سال: 2018
ISSN: 0743-7463,1520-5827
DOI: 10.1021/acs.langmuir.8b02960