Journal ArticleDOI
Resonant light scattering spectroscopy of gold, silver and gold–silver alloy nanoparticles and optical detection in microfluidic channels
TLDR
RLS spectroscopy is shown to be useful for studying analyte-induced gold nanoparticle assembly and nanoparticle chemistry, which can induce radical changes in the plasmonic resonances responsible for the strong light scattering.Abstract:
Dark field resonant light scattering by gold and silver nanoparticles enables the detection and spectroscopy of such particles with high sensitivity, down to the single-particle level, and can be used to implement miniaturised optical detection schemes for chemical and biological analysis. Here, we present a straightforward optical spectroscopic methodology for the quantitative spectrometric study of resonant light scattering (RLS) by nanoparticles. RLS spectroscopy is complementary to UV-visible absorbance measurements, and we apply it to the characterisation and comparison of different types of gold, silver and gold-silver alloy nanoparticles. The potential of gold and silver particles as alternatives for fluorescent probes in certain applications is discussed. RLS spectroscopy is shown to be useful for studying analyte-induced gold nanoparticle assembly and nanoparticle chemistry, which can induce radical changes in the plasmonic resonances responsible for the strong light scattering. Furthermore, the feasibility of dark field RLS detection and quantitation of metal nanoparticles in microfluidic volumes is demonstrated, opening interesting possibilities for the further development of microfluidic detection schemes.read more
Citations
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Journal ArticleDOI
A rapid method to estimate the concentration of citrate capped silver nanoparticles from UV-visible light spectra
TL;DR: A generalized table of extinction coefficient data for silver nanoparticles from 8 to 100 nm is presented, in good agreement with collated literature values measured by different authors with non-standardized methodology and each for a limited range of particle size.
Journal ArticleDOI
Nanoparticle counting: towards accurate determination of the molar concentration
Jing Shang,Xiaohu Gao +1 more
TL;DR: This review outlines the theories and applications of current strategies to measure nanoparticle molar concentration, discusses the advantages and limitations of these methods, and provides insights into future directions.
Journal ArticleDOI
A peptide for targeted, systemic delivery of imaging and therapeutic compounds into acute brain injuries
Aman P. Mann,Pablo Scodeller,Pablo Scodeller,Sajid Hussain,Jinmyoung Joo,Ester J. Kwon,Gary B. Braun,Tarmo Mölder,Zhi-Gang She,Venkata Ramana Kotamraju,Barbara Ranscht,Stan Krajewski,Tambet Teesalu,Sangeeta N. Bhatia,Sangeeta N. Bhatia,Michael J. Sailor,Erkki Ruoslahti,Erkki Ruoslahti +17 more
TL;DR: In this paper, a short peptide (sequence CAQK) identified by in vivo phage display screening in mice with acute brain injury was identified and used for the treatment of acute TBI.
Journal ArticleDOI
Photothermal enhancement of chemotherapy in breast cancer by visible irradiation of Gold Nanoparticles.
TL;DR: A synergistic interaction between heat (photoconversion at 530 nm) and cytotoxic action by doxorubicin is shown with clear advantages to those of the individual therapy approaches.
Journal ArticleDOI
Carbon dots-silver nanoparticles fluorescence resonance energy transfer system as a novel turn-on fluorescent probe for selective determination of cysteine
TL;DR: In this article, the interaction of carbon dots (C-dots) prepared from orange juice with silver nanoparticles (AgNPs) using fluorescence spectroscopy was investigated.
References
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Preparation and Growth Mechanism of Gold Nanorods (NRs) Using Seed-Mediated Growth Method
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