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Quantifying the Polymeric Capping of Nanoparticles with X‐Ray Photoelectron Spectroscopy
Author(s) -
Tanner Eden E. L.,
Sokolov Stanislav V.,
Ngamchuea Kamonwad,
Palgrave Robert G.,
Compton Richard G.
Publication year - 2018
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201800056
Subject(s) - x ray photoelectron spectroscopy , ethylene glycol , ionic liquid , nanoparticle , tetrafluoroborate , peg ratio , chemistry , ionic bonding , materials science , nuclear chemistry , polymer chemistry , chemical engineering , nanotechnology , organic chemistry , ion , catalysis , finance , engineering , economics
X‐ray photoelectron spectroscopy was used to characterise silver nanoparticles capped with poly(ethylene) glycol (PEG) in a room‐temperature ionic liquid (RTIL), 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([Bmim][BF 4 ]). The amounts of oxygen and silver present in nanoparticles capped with different molecular weight thiolated PEG chains were monitored, and the number of thiolated PEG chains per nanoparticle was calculated, an in situ characterisation not previously possible.