Photothermal effects of gold nanoparticles induced by light emitting diodes

Yue, Kai; Nan, Jingyang; Zhang, Xinru; Tang, Jue; Zhang, Xinxin

doi:10.1016/j.applthermaleng.2016.01.077

Cited by 30 publications

(19 citation statements)

References 27 publications

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“…20 In addition, small size gold nanorods have a large surface area to volume ratio, high cellular uptake, high clearance rate from the liver, spleen, and the kidney, and ease of subcellular accessibility. 28−36 Furthermore, the efficient fluorescence quenching abilities of small gold nanorods render them good quenchers of background signals in fluorescence detection techniques. 37 Small gold nanorods are therefore ideal agents for photothermal therapy, diagnostic, biosensing, and drug delivery.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Small Gold Nanorods and Their Subsequent Functionalization with Hairpin Single Stranded DNA

et al. 2019

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Small gold nanorods have a significantly large absorption/scattering ratio and are especially beneficial in exploiting photothermal effects, for example in photothermal therapy and remote drug release. This work systematically investigates the influence of growth conditions on the size, growth yield, and stability of small gold nanorods. The silver-assisted seed-mediated growth method was optimized to synthesize stable small gold nanorods with a high growth yield (>85%). Further study on the influence of silver ions on the growth facilitates the growth of small gold nanorods with tunable longitudinal surface plasmon resonance from 613 to 912 nm, with average dimensions of 13–25 nm in length and 5–6 nm in diameter. Moreover, the small gold nanorods were successfully functionalized with thiol-modified hairpin oligonucleotides (hpDNA) labeled with Cy5. Fluorescence intensity measurements show an increase in the presence of target DNA and an enhanced signal/background ratio when the longitudinal surface plasmon resonance of small gold nanorods overlaps with the excitation and emission wavelength of Cy5. This coincides with a reduced fluorescence lifetime of Cy5 in the hairpin structure, indicating surface plasmon resonance-enhanced energy transfer to the small gold nanorods. This study may provide insight on the synthesis and functionalization of small gold nanorods in biomedical sensing and therapy.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Small Gold Nanorods and Their Subsequent Functionalization with Hairpin Single Stranded DNA

et al. 2019

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“…S2 ). Moreover, the temperature at the center of the Au NP array was slightly higher than that of the neighboring Au NPs owing to the ensemble effect 38 .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the temperature change or increase around the Au NP array is due to the total number of Au NPs—the so-called ensemble effect—which can contribute to the total heat source (Q total ). With a certain number of Au NPs, the heat generation referred to as the specific absorption rate (SAR, W/m 3 ) is the sum of individual heat generation by all Au NPs, which can be defined as follows 37 , 38 : …”

Section: Resultsmentioning

confidence: 99%

Photothermal inactivation of universal viral particles by localized surface plasmon resonance mediated heating filter membrane

Yoo

Yoon

Jung

et al. 2022

Sci Rep

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This study introduces localized surface plasmon resonance (L-SPR) mediated heating filter membrane (HFM) for inactivating universal viral particles by using the photothermal effect of plasmonic metal nanoparticles (NPs). Plasmonic metal NPs were coated onto filter membrane via a conventional spray-coating method. The surface temperature of the HFM could be controlled to approximately 40–60 °C at room temperature, owing to the photothermal effect of the gold (Au) NPs coated on them, under irradiation by visible light-emitting diodes. Due to the photothermal effect of the HFMs, the virus titer of H1Npdm09 was reduced by > 99.9%, the full inactivation time being < 10 min, confirming the 50% tissue culture infective dose (TCID50) assay. Crystal violet staining showed that the infectious samples with photothermal inactivation lost their infectivity against Mardin-Darby Canine Kidney cells. Moreover, photothermal inactivation could also be applied to reduce the infectivity of SARS-CoV-2, showing reduction rate of 99%. We used quantitative reverse transcription polymerase chain reaction (qRT-PCR) techniques to confirm the existence of viral genes on the surface of the HFM. The results of the TCID50 assay, crystal violet staining method, and qRT-PCR showed that the effective and immediate reduction in viral infectivity possibly originated from the denaturation or deformation of membrane proteins and components. This study provides a new, simple, and effective method to inactivate viral infectivity, leading to its potential application in various fields of indoor air quality control and medical science.

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“…Since the temperature rise is proportional to the total amount of absorbed optical energy, 24 the photocurrent response should reproduce the absorption spectrum of the material responsible for the heating. We performed excitation power and wavelength-dependent chronoamperometry measurements under alternating illumination (30 s light on/off) on the AuNP/HOPG electrodes in 20 mM BnOH solution.…”

Section: Temperature Effects On Aunp/hopg Vs Aunp/ito Electrodesmentioning

confidence: 99%

The Role of an Inert Electrode Support in Plasmonic Electrocatalysis

Ganguli

Sekretareva

2021

Preprint

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Plasmonic nanostructures loaded onto catalytically inert conductive support materials are believed to be advantageous for maximizing photocatalytic effects in photoelectrochemical systems due to the increased efficiency of Schottky barrier-free architectures in collecting hot charge carriers. However, the systematic mechanistic investigation and description of the inert electrode support contribution to plasmonic electrocatalysis is missing. Herein, we systematically investigated the effect of the supporting electrode material on the observed photocatalytic enhancement by comparing photoelectrocatalytic properties of AuNPs supported on highly oriented pyrolytic graphite (HOPG) and on indium tin oxide (ITO) electrodes using electrocatalytic benzyl alcohol (BnOH) oxidation as a model system. Upon illumination, only ~(3 ± 1)% enhancement in catalytic current was recorded on the AuNP/ITO electrodes in contrast to ~(42 ± 6)% enhancement on AuNP/HOPG electrodes. Our results showed that the local heating due to light absorption by the electrode material itself independent of localized surface plasmon effects is the primary source of the observed significant photo-induced enhancement on the HOPG electrodes in comparison to the ITO electrodes. Moreover, we demonstrated that an increased interfacial charge transfer at elevated temperatures, and not faster substrate diffusion is the main source of the enhancement. This work highlights the importance of systematic evaluation of contributions of all parts, even if they are catalytically inert, to the light-induced facilitation of catalytic reactions in plasmonic systems.

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Photothermal effects of gold nanoparticles induced by light emitting diodes

Cited by 30 publications

References 27 publications

Synthesis of Small Gold Nanorods and Their Subsequent Functionalization with Hairpin Single Stranded DNA

Synthesis of Small Gold Nanorods and Their Subsequent Functionalization with Hairpin Single Stranded DNA

Photothermal inactivation of universal viral particles by localized surface plasmon resonance mediated heating filter membrane

The Role of an Inert Electrode Support in Plasmonic Electrocatalysis

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