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Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis.

Publication ,  Journal Article
De Silva Indrasekara, AS; Johnson, SF; Odion, RA; Vo-Dinh, T
Published in: ACS omega
February 2018

Among plasmonic nanoparticles, surfactant-free branched gold nanoparticles have exhibited exceptional properties as a nanoplatform for a wide variety of applications ranging from surface-enhanced Raman scattering sensing and imaging applications to photothermal treatment and photoimmunotherapy for cancer treatments. The effectiveness and reliability of branched gold nanoparticles in biomedical applications strongly rely on the consistency and reproducibility of physical, chemical, optical, and therapeutic properties of nanoparticles, which are mainly governed by their morphological features. Herein, we present an optimized bottom-up synthesis that improves the reproducibility and homogeneity of the gold-branched nanoparticles with desired morphological features and optical properties. We identified that the order of reagent addition is crucial for improved homogeneity of the branched nature of nanoparticles that enable a high batch-to-batch reproducibility and reliability. In addition, a different combination of the synthesis parameters, in particular, additive halides and concentration ratios of reactive Au to Ag and Au to Au seeds, which yield branched nanoparticle of similar localized surface plasmon resonances but with distinguishable changes in the dimensions of the branches, was realized. Overall, our study introduces the design parameters for the purpose-tailored manufacturing of surfactant-free gold nanostars in a reliable manner.

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Published In

ACS omega

DOI

EISSN

2470-1343

ISSN

2470-1343

Publication Date

February 2018

Volume

3

Issue

2

Start / End Page

2202 / 2210

Related Subject Headings

  • 4004 Chemical engineering
  • 3406 Physical chemistry
  • 3403 Macromolecular and materials chemistry
  • 0912 Materials Engineering
  • 0904 Chemical Engineering
 

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MLA
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De Silva Indrasekara, A. S., Johnson, S. F., Odion, R. A., & Vo-Dinh, T. (2018). Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis. ACS Omega, 3(2), 2202–2210. https://doi.org/10.1021/acsomega.7b01700
De Silva Indrasekara, Agampodi S., Sean F. Johnson, Ren A. Odion, and Tuan Vo-Dinh. “Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis.ACS Omega 3, no. 2 (February 2018): 2202–10. https://doi.org/10.1021/acsomega.7b01700.
De Silva Indrasekara AS, Johnson SF, Odion RA, Vo-Dinh T. Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis. ACS omega. 2018 Feb;3(2):2202–10.
De Silva Indrasekara, Agampodi S., et al. “Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis.ACS Omega, vol. 3, no. 2, Feb. 2018, pp. 2202–10. Epmc, doi:10.1021/acsomega.7b01700.
De Silva Indrasekara AS, Johnson SF, Odion RA, Vo-Dinh T. Manipulation of the Geometry and Modulation of the Optical Response of Surfactant-Free Gold Nanostars: A Systematic Bottom-Up Synthesis. ACS omega. 2018 Feb;3(2):2202–2210.

Published In

ACS omega

DOI

EISSN

2470-1343

ISSN

2470-1343

Publication Date

February 2018

Volume

3

Issue

2

Start / End Page

2202 / 2210

Related Subject Headings

  • 4004 Chemical engineering
  • 3406 Physical chemistry
  • 3403 Macromolecular and materials chemistry
  • 0912 Materials Engineering
  • 0904 Chemical Engineering