ArticleBiomedical optics express2013
Two-photon luminescence properties of gold nanorods.
Article in Biomedical optics express, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 67 citations in OpenAlex.
- Role of gold nanoparticles in advanced biomedical applications.Nanoscale advances · 2020Review
- Gastric Parietal Cell and Intestinal Goblet Cell Secretion: a Novel Cell-Mediated In Vivo Metal Nanoparticle Metabolic Pathway Enhanced with Diarrhea Via Chinese Herbs.Nanoscale research letters · 2019Article
- Encapsulation of Gold Nanorods with Porphyrins for the Potential Treatment of Cancer and Bacterial Diseases: A Critical Review.Bioinorganic chemistry and applications · 2019Review
- Ready-to-use protein G-conjugated gold nanorods for biosensing and biomedical applications.Journal of nanobiotechnology · 2018Article
- Label-free imaging of atherosclerotic plaques using third-harmonic generation microscopy.Biomedical optics express · 2018Article
- Self-assisted optothermal trapping of gold nanorods under two-photon excitation.Methods and applications in fluorescence · 2016Article
- Putting gold nanocages to work for optical imaging, controlled release and cancer theranostics.Nanomedicine (London, England) · 2016Review
- Dual-modality fiber-based OCT-TPL imaging system for simultaneous microstructural and molecular analysis of atherosclerotic plaques.Biomedical optics express · 2015Article
- Spectral properties and dynamics of gold nanorods revealed by EMCCD-based spectral phasor method.Microscopy research and technique · 2015Article
- Degradable polymer-coated gold nanoparticles for co-delivery of DNA and siRNA.Acta biomaterialia · 2015Article
- In vivo imaging of nanoparticle delivery and tumor microvasculature with multimodal optical coherence tomography.Biomedical optics express · 2014Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Gold nanorods can be internalized by macrophages (an important early cellular marker in atherosclerosis and cancer) and used as an imaging contrast agent for macrophage targeting. Objective of this study is to compare two-photon luminescence (TPL) properties of four aspect ratios of gold nanorods with surface plasmon resonance at 700, 756, 844 and 1060 nm respectively. TPL from single nanorods and Rhodamine 6G particles was measured using a laser-scanning TPL microscope. Nanorod TPL emission spectrum was recorded by a spectrometer. Quadratic dependence of luminescence intensity on excitation power (confirming a TPL process) was observed below a threshold (e.g., <1.6 mW), followed by photobleaching at higher power levels. Dependence of nanorod TPL intensity on excitation wavelength indicated that the two-photon action cross section (TPACS) is plasmon-enhanced. Largest TPACS of a single nanorod (12271 GM) was substantially larger than a single Rhodamine 6G particle (25 GM) at 760 nm excitation. Characteristics of nanorod TPL emission spectrum can be explained by plasmon-enhanced interband transition of gold. Comparison results of TPL brightness, TPACS and emission spectrum of nanorods can guide selection of optimal contrast agent for selected imaging applications.
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