Water-soluble conjugated polymer-induced self-assembly of gold nanoparticles and its application to SERS

Please use this identifier to cite or link to this item: https://doi.org/10.1021/la802319c

Title:	Water-soluble conjugated polymer-induced self-assembly of gold nanoparticles and its application to SERS
Authors:	Polavarapu, L. Xu, Q.-H.
Issue Date:	7-Oct-2008
Citation:	Polavarapu, L., Xu, Q.-H. (2008-10-07). Water-soluble conjugated polymer-induced self-assembly of gold nanoparticles and its application to SERS. Langmuir 24 (19) : 10608-10611. ScholarBank@NUS Repository. https://doi.org/10.1021/la802319c
Abstract:	Gold nanochains were prepared by the assembly of citrate-stabilized gold nanospheres induced by cationic conjugated polymers. This assembly method was rapid, and the assembled product was very stable. A longitudinal plasmon resonance band was formed as a result of the coupling of gold nanoparticles and can be tuned from visible to near-infrared by adjusting the polymer/Au molar ratio. The gold nanochains were used as a SERS substrate and gave an enhancement factor of 8.4 × 109, which is ∼400 times larger than that on the isolated gold nanosphere substrate. The giant SERS enhancement is ascribed to the large electromagnetic fields of coupled gold nanoparticles. © 2008 American Chemical Society.
Source Title:	Langmuir
URI:	http://scholarbank.nus.edu.sg/handle/10635/95412
ISSN:	07437463
DOI:	10.1021/la802319c
Appears in Collections:	Staff Publications

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