Copolymer and platinum ion assisted growth of functionalized gold nanonests

Jing Cyuan Yang, Yi Hsiang Chang, Wha Tzong Whang, Chun-Hua Chen*, Ren Jye Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes a facile low-toxicity synthesis of two different types of Au nanonests and one binary Au-Pt core-shell nanonest with high yield and excellent uniformity in size and morphology using block copolymer P123 (EO20PO70EO20) as a soft template and the main reductant in an ice water bath. The introduction of a suitable second metallic source, i.e. Pt ions in the present case, was proven to be a unique strategy for effectively governing the reduction sites of P123 for Au nucleation, which leads to significant changes especially in the crystallite size of the grown Au nanonests. The Au nanonests exhibited a distinct morphology-dependent surface plasmon resonance (SPR) that is red-shifted by -140 nm from the spherical particles wavelength, and significant surface-enhanced Raman scattering (SERS), allowing the rapid determination of rare malachite green oxalate (MGO).

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalNew Journal of Chemistry
Volume39
Issue number1
DOIs
StatePublished - 1 Jan 2015

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