Chemical Forums

Please login or register.

Login with username, password and session length

Sponsored links

Pages: [1]   Go Down

Author Topic: Stubborn citrate-capped nanoparticles don't want to change phases  (Read 855 times)

0 Members and 1 Guest are viewing this topic.


  • Regular Member
  • ***
  • Mole Snacks: +5/-1
  • Offline Offline
  • Posts: 48
Stubborn citrate-capped nanoparticles don't want to change phases
« on: September 07, 2016, 04:15:12 AM »

Hey guys,

I'm trying to switch the caps of my gold nanoparticles to from an aqueous citrate-capped solution to an organic thiol-capped solution. I've tried various ways to do this, all of which being variations of mixing the Ct-capped nanoparticles with the desired thiol in an organic solvent, with the idea that the thiol has a higher affinity for the gold and will displace the citrate, resulting in the desired thiol-capped hydrophobic nanoparticles in the organic layer. The Ct-capped nanoparticles range in diameters from ~6 to 24nm.

This procedure is described in countless papers and it just doesn't work that easily. Does anybody have any experience/advice/suggestions for this? I've tried using some phase transfer catalysts, different variations of equivalencies and solvents, and still to no avail.

Pages: [1]   Go Up

Mitch Andre Garcia's Chemical Forums 2003-Present.

Page created in 0.08 seconds with 23 queries.