Premium
A General Strategy Toward pH‐Controlled Aggregation–Dispersion of Gold Nanoparticles and Single‐Walled Carbon Nanotubes
Author(s) -
Han Xiaogang,
Li Yulin,
Wu Shouguo,
Deng Zhaoxiang
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700832
Subject(s) - protonation , carbon nanotube , deprotonation , nanoparticle , dispersion (optics) , molecule , ethylenediamine , colloidal gold , nanotechnology , chemistry , chemical engineering , materials science , organic chemistry , physics , optics , ion , engineering
pH matters: Protonation–deprotonation of an ethylenediamine molecule is used to harness the aggregation‐dispersion process of gold nanoparticles (see image) and carbon nanotubes. The idea takes advantage of the doubly protonated molecule that acts as an electrostatic bridge between two oppositely charged nanoparticles.