2020年
Spatial Ordering of the Structure of Polymer-Capped Gold Nanorods under an External DC Electric Field
Journal of Physical Chemistry Letters
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- 開始ページ
- 2086
- 終了ページ
- 2091
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.jpclett.0c00566
Copyright © 2020 American Chemical Society. We studied the alignment changes of polymer-capped gold nanorods (GNRs@PS) under an applied electric field by visible-near-infrared absorption and small-angle X-ray scattering (SAXS) measurements. Monodispersed GNRs with an aspect ratio of 4.0 were produced by the seed-mediated growth method using cetyltrimethylammonium bromide and sodium oleate binary surfactants. We investigated the phase transition between the ordered structure of GNRs@PS induced by the external electric field. At appropriate field strengths (>3 V/μm), the SAXS profiles of GNRs@PS showed a smectic ordered structure. Increasing the electric field strength densified the ordered structure and greatly increased the Raman signals (the 298 and 445 cm-1 bands) of the carbon tetrachloride (solvent) between the GNRs@PS. The insights gained are potentially applicable to catalysts, future displays, optical filters, and data storage devices. ©
- リンク情報
- ID情報
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- DOI : 10.1021/acs.jpclett.0c00566
- eISSN : 1948-7185
- PubMed ID : 32101434
- SCOPUS ID : 85081198902