Facet-dependent gold nanocrystals for effective photothermal killing of bacteria

Sibidou Yougbaré; Hung-Lung Chou; Chao-Hsuan Yang; Dyah Ika Krisnawati; Achmad Jazidie; Mohammad Nuh; Tsung-Rong Kuo

doi:10.1016/j.jhazmat.2020.124617

Facet-dependent gold nanocrystals for effective photothermal killing of bacteria

J Hazard Mater. 2021 Apr 5:407:124617. doi: 10.1016/j.jhazmat.2020.124617. Epub 2020 Dec 9.

Authors

Sibidou Yougbaré¹, Hung-Lung Chou², Chao-Hsuan Yang³, Dyah Ika Krisnawati⁴, Achmad Jazidie⁵, Mohammad Nuh⁶, Tsung-Rong Kuo⁷

Affiliations

¹ International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; Institut de Recherche en Sciences de la Santé (IRSS-DRCO), 03 B.P 7192, Nanoro, Ouagadougou 03, Burkina Faso.
² Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan. Electronic address: HLCHOU@mail.ntust.edu.tw.
³ Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan.
⁴ Dharma Husada Nursing Academy, Kediri, East Java 64114, Indonesia.
⁵ Department of Electrical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia; Universitas Nahdlatul Ulama Surabaya, Surabaya 60111, Indonesia.
⁶ Department of Biomedical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia.
⁷ International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan. Electronic address: trkuo@tmu.edu.tw.

PMID: 33359972
DOI: 10.1016/j.jhazmat.2020.124617

Abstract

Gold-based plasmonic nanocrystals have been extensively developed for noninvasive photothermal therapy. In this study, gold nanorods (AuNRs) with (200) plane and gold nanobipyramids (AuNBPs) with (111) plane were utilized as photothermal agents for noninvasive photothermal therapy. With longitudinal surface plasma bands at ~808 nm, both of AuNRs and AuNBPs revealed photothermal capability and reversibility of laser response under 808-nm near-infrared (NIR) laser irradiation. Moreover, AuNBPs with (111) plane exhibited higher photothermal performance than that of AuNRs with (200) plane under NIR laser irradiation. Density function theory (DFT) simulations revealed that water adsorption energy followed the order Au(111) < Au(100), indicating that the water was easily desorbed on the Au(111) surface for photothermal heating. For the photothermal therapy against Escherichia coli (E. coli), AuNBPs also exhibited higher efficiency compared to that of AuNRs under NIR laser irradiation. Combination of experimental photothermal therapy and DFT simulations demonstrated that AuNBPs with (111) plane were better photothermal agents than that of AuNRs with (100) plane.

Keywords: Antibacterial toxicity; Gold nanobipyramids; Gold nanorods; Near-infrared irradiation; Photothermal performance.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Escherichia coli
Gold
Nanoparticles*
Nanotubes*

Substances

Gold