Journal ArticleDOI
Gold nanorod@chiral mesoporous silica core-shell nanoparticles with unique optical properties.
Wenjing Liu,Zhening Zhu,Ke Deng,Zhengtao Li,Yunlong Zhou,Huibin Qiu,Yan Gao,Shunai Che,Zhiyong Tang +8 more
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TLDR
In this work, gold nanorod@chiral mesoporous silica core-shell nanoparticles (GNR@CMS NPs) have been successfully synthesized and exhibits strong and tunable circular dichroism signals in the visible and near-infrared regions due to the optical coupling between the CMS shells and the GNR cores.Abstract:
The design and fabrication of chiral nanostructures is a promising approach to realize enantiomeric recognition and separation. In our work, gold nanorod@chiral mesoporous silica core–shell nanoparticles (GNR@CMS NPs) have been successfully synthesized. This novel material exhibits strong and tunable circular dichroism signals in the visible and near-infrared regions due to the optical coupling between the CMS shells and the GNR cores. When chiral cysteine molecules are loaded in the porous shells, the corresponding surface enhanced Raman scattering spectroscopy demonstrates a distinct chiral recognition effect, which can be used to semiquantitatively measure the composition of chiral enantiomers. A detailed sensing mechanism has been disclosed by density functional theory calculations.read more
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Nanochemistry and Nanomedicine for Nanoparticle-based Diagnostics and Therapy
TL;DR: This work presents a new generation of high-performance liquid chromatography platforms for selective separation of Na6(CO3) from Na4(SO4) through Na2SO4 and shows real-world applications in drug discovery and treatment of central nervous system disorders.
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Plasmon-enhanced optical sensors: a review
TL;DR: The design strategies for nanomaterials and nanostructures to plasmonically enhance optical sensing signals are discussed, also highlighting the applications of plAsmon-enhanced optical sensors in healthcare, homeland security, food safety and environmental monitoring.
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Chiral Inorganic Nanostructures
TL;DR: This review will cover both experiment and theory of chiral nanostructures starting with the origin and multiple components of mirror asymmetry of individual NPs and their assemblies, and shall consider four different types of chirality in nanostructure and related physical, chemical, and biological effects.
Journal ArticleDOI
Helical graphitic carbon nitrides with photocatalytic and optical activities
TL;DR: This is to the authors' knowledge a unique example of chiral graphitic carbon nitride that features both left- and right-handed helical nanostructures and exhibits unique optical activity to circularly polarized light at the semiconductor absorption edge as well as photoredox activity for solar-to-chemical conversion.
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Mesoporous Silica and Organosilica Nanoparticles: Physical Chemistry, Biosafety, Delivery Strategies, and Biomedical Applications.
TL;DR: Trends in the biomedical applications of silica and organosilica nanovectors are delineated, such as unconventional bioimaging techniques, large cargo delivery, combination therapy, gaseous molecule delivery, antimicrobial protection, and Alzheimer's disease therapy.
References
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TL;DR: In this article, a method was used for preparing gold NRs with aspect ratios ranging from 1.5 to 4.5 for which the surface plasmon absorption maxima are between 600 and 1300 nm.
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Wet Chemical Synthesis of High Aspect Ratio Cylindrical Gold Nanorods
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Gold nanorods: Synthesis, characterization and applications
TL;DR: An overview of gold nanorod synthesis and properties can be found in this article, where the shape-dependent optical properties of rod-shaped nanoparticles are discussed and a theoretical analysis of the expected behavior is presented.