Chiral Core–Shell Upconversion Nanoparticle@MOF Nanoassemblies for Quantification and Bioimaging of Reactive Oxygen Species in Vivo

Abstract

In this study, a hybrid nanoassembly consisting of an upconversion nanoparticle (UCNP) core and a zeolitic imidazolate framework-8 (ZIF) shell encapsulated with chiral NiSx NPs

Engineering of chiral nanomaterials for biomimetic catalysis

“…85 Encouraged by their superior characteristics, the artificial chiral nanomaterials were widely utilized to investigate the interactions with DNA, protein, small molecules and other biological media. 44,[86][87][88][89][90][91][92][93][94] In the past few years, our group has consistently focused on the fabrication of chiral bionanomaterials to mimic native active materials with the aim of achieving great catalytic outcomes.…”

Directing Arrowhead Nanorod Dimers for MicroRNA In Situ Raman Detection in Living Cells

“…Directed self‐assembly of anisotropic nanoscale building blocks is an efficient strategy for producing diverse superstructures with unique optical properties for technologies applications, [ 1–8 ] especially for plasmonic nanocrystals, as the multiple optical properties are determined by their geometrical arrangement. [ 9–16 ] The key influencing factor in the successful formation of directed diverse assemblies is the anisotropy of nanoscale building blocks originating from the shape and unequal distribution of ligands on the surface of nanocrystals. [ 17–21 ] Arrowhead gold nanorods (NRs), including two pyramidal heads connected by a four‐wing shaft, display high concave geometries and anisotropic properties.…”

Opportunities for Persistent Luminescent Nanoparticles in Luminescence Imaging of Biological Systems and Photodynamic Therapy

“…Observation of cells and the different cellular components is a fascinating field that allows one to diagnose diseases and unravel biological processes [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. The simplest way to observe cellular components is using a simple optical microscope and color staining [ 14 ].…”

“…Thus, luminescence imaging of biological systems is based on exciting a volume of a sample containing a luminescent compound using an adequate excitation source and wavelength and collecting the light emitted. Luminescence imaging is a sensitive technique that allows diagnosing diseases [ 15 , 16 , 17 ], reconstructing 3-D structures of tissues or cellular components [ 18 , 19 ], sensing chemical species [ 1 , 2 , 3 , 12 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ], and unraveling cellular processes [ 39 , 40 , 41 ]. One of the drawbacks of this technique is the strong background emission intensity, especially in the blue and green regions of the electromagnetic spectrum that are often higher than those of the luminescent compound.…”