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Proceedings Paper

Optical properties of polydopamine-coated Au nanorods
Author(s): Boris N. Khlebtsov; Andrey M. Burov; Fulvio Ratto; Nikolay G. Khlebtsov
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Paper Abstract

Polydopamine-coated Au nanorods (AuNRs) have attracted a great interest for various biomedical applications. Polydopamine (PDA) is a light absorbing biopolymer with nonzero imaginary part of the refractive index, which exerts a significant effect on the optical properties of PDA-coated AuNRs. In this paper, we study the changes in plasmonic properties of AuNRs after PDA coating. We observed that the longitudinal plasmon resonance decreases while the transversal one increases. To confirm the experimental observations, we performed theoretical simulations of the extinction and scattering spectra for AuNRs with different geometrical properties, PDA shell thickness and refractive index. The loss of plasmonic peak intensity becomes higher as the axial ratio of the AuNRs or the imaginary part of the refractive index of PDA increase.

Paper Details

Date Published: 3 June 2019
PDF: 8 pages
Proc. SPIE 11067, Saratov Fall Meeting 2018: Computations and Data Analysis: from Nanoscale Tools to Brain Functions, 110671D (3 June 2019); doi: 10.1117/12.2522165
Show Author Affiliations
Boris N. Khlebtsov, Institute of Biochemistry and Physiology of Plants and Microorganisms (Russian Federation)
Saratov State Univ. (Russian Federation)
Andrey M. Burov, Institute of Biochemistry and Physiology of Plants and Microorganisms (Russian Federation)
Fulvio Ratto, Istituto di Fisica Applicata "Nello Carrara", CNR (Italy)
Nikolay G. Khlebtsov, Institute of Biochemistry and Physiology of Plants and Microorganisms (Russian Federation)
Saratov State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11067:
Saratov Fall Meeting 2018: Computations and Data Analysis: from Nanoscale Tools to Brain Functions
Dmitry Engelevich Postnov, Editor(s)

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