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Assembly of Gold Nanoparticles on Gold Nanorods Using Functionalized Poly( N ‐isopropylacrylamide) as Polymeric “Glue”
Author(s) -
Fan Ziyin,
Tebbe Moritz,
Fery Andreas,
Agarwal Seema,
Greiner Andreas
Publication year - 2016
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201600081
Subject(s) - nanorod , poly(n isopropylacrylamide) , colloidal gold , chain transfer , materials science , polymer chemistry , nanoparticle , polymer , lower critical solution temperature , polymerization , raft , thiol , nanotechnology , chemical engineering , chemistry , radical polymerization , copolymer , composite material , organic chemistry , engineering
A telechelic thermoresponsive polymer, α ‐amino‐ ω ‐thiol‐poly( N ‐isopropylacrylamide) (H 2 N‐PNiPAM‐SH), is used as the polymeric glue to assemble gold nanoparticles (AuNPs) around gold nanorods (AuNRs) into a satellite structure. Prepared by reversible addition‐fragmentation chain transfer polymerization followed by hydrazinolysis, H 2 N‐PNiPAM‐SH is able to interlink the two types of the gold building blocks with the thiol‐end grafting on AuNRs and the amine‐end coordinating on the AuNP surface. The density of the grafted AuNPs on AuNRs can be tuned by adjusting the molar ratio between AuNPs and AuNRs in the feed. The resulted satellite‐like assembly exhibits unique optical property that was responsive to temperature change.