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Thermoresponsive Assembly of Charged Gold Nanoparticles and Their Reversible Tuning of Plasmon Coupling
Author(s) -
Liu Yiding,
Han Xiaogang,
He Le,
Yin Yadong
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201201816
Subject(s) - colloidal gold , plasmon , coupling (piping) , zeta potential , nanoparticle , dispersion (optics) , nanotechnology , extinction (optical mineralogy) , surface plasmon resonance , colloid , aqueous solution , materials science , chemical physics , chemistry , optoelectronics , optics , physics , metallurgy
Charged colloidal gold nanoparticles (AuNPs) can be assembled and disassembled in an aqueous solution in response to temperature change and display reversible thermoresponsive tuning of plasmon coupling. The reversible tuning was made possible by manipulating the electrostatic interaction through the temperature‐dependent zeta potential of the charged AuNPs (see the extinction spectra of a typical AuNP dispersion).