We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Reversible Self‐Assembly of Gold Nanoparticles Based on Co‐Functionalization with Zwitterionic and Cationic Binding Motifs**.
- Authors
He, Huibin; Rudolph, Kevin; Ostwaldt, Jan‐Erik; Voskuhl, Jens; Hirschhäuser, Christoph; Niemeyer, Jochen
- Abstract
We report a pH‐ and temperature‐controlled reversible self‐assembly of Au‐nanoparticles (AuNPs) in water, based on their surface modification with cationic guanidiniocarbonyl pyrrole (GCP) and zwitterionic guanidiniocarbonyl pyrrole carboxylate (GCPZ) binding motifs. When both binding motifs are installed in a carefully balanced ratio, the resulting functionalized AuNPs self‐assemble at pH 1, pH 7 and pH 13, whereas they disassemble at pH 3 and pH 11. Further disassembly can be achieved at elevated temperatures at pH 1 and pH 13. Thus, we were able to prepare functionalized nanoparticles that can be assembled/disassembled in seven alternating regimes, simply controlled by pH and temperature.
- Subjects
GOLD nanoparticles; TEMPERATURE control; HIGH temperatures; PYRROLES; NANOPARTICLES
- Publication
Chemistry - A European Journal, 2021, Vol 27, Issue 54, p13539
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202102457