Assembly of Gold Nanoparticles on Gold Nanorods Using Functionalized Poly(N‐isopropylacrylamide) as Polymeric “Glue” |
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| Authors: | Ziyin Fan Moritz Tebbe Andreas Fery Seema Agarwal Andreas Greiner |
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| Affiliation: | 1. Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, Bayreuth, Germany;2. Physical Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, Bayreuth, Germany;3. Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden and Chair for Physical Chemistry of Polymeric Materials, Technical University Dresden, Dresden, Germany |
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| Abstract: | A telechelic thermoresponsive polymer, α‐amino‐ω‐thiol‐poly(N‐isopropylacrylamide) (H2N‐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, H2N‐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. |
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| Keywords: | gold nanoparticles nanorods polymer conjugate |
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