Journal ArticleDOI
Precursor and solvent effects in the nonhydrolytic synthesis of complex oxide nanoparticles for bioimaging applications by the ether elimination (Bradley) reaction.
Robert Pazik,Renata Tekoriute,Sebastian Håkansson,R. J. Wiglusz,Wieslaw Strek,Gulaim A. Seisenbaeva,Yurii K. Gun'ko,Vadim G. Kessler +7 more
Reads0
Chats0
TLDR
Investigation of the solvent and alkoxide precursor effect on the nonhydrolytic sol-gel synthesis of oxide nanoparticles by means of an ether elimination (Bradley) reaction indicates that the best crystallinity of the resulting oxide particles is achieved on application of aprotic ketone solvents and of smallest possible alkoxide groups.Abstract:
Investigation of the solvent and alkoxide precursor effect on the nonhydrolytic sol-gel synthesis of oxide nanoparticles by means of an ether elimination (Bradley) reaction indicates that the best crystallinity of the resulting oxide particles is achieved on application of aprotic ketone solvents, such as acetophenone, and of smallest possible alkoxide groups. The size of the produced primary particles is always about 5 nm caused by intrinsic mechanisms of their formation. The produced particles, possessing the composition of natural highly insoluble minerals, are biocompatible. Optical characteristics of the perovskite complex oxide nanoparticles can easily be controlled through doping with rare earth cations; for example, by Eu(3+). They can be targeted through surface modification by anchoring the directing biomolecules through a phosphate or phosphonate moiety. Testing of the distribution of Eu-doped BaTiO(3) particles, modified with ethylphosphonic acid, demonstrates their facile uptake by the plants with active fluid transport, resulting finally in their enhanced concentration within the cell membranes.read more
Citations
More filters
Journal Article
In vivo imaging with quantum dots encapsulated in phospholipid micelles
TL;DR: In this paper, the authors encapsulated individual nanocrystals in phospholipid block-copolymer micelles and demonstrated both in vitro and in vivo imaging, and the nanocrystal-micelles acted as in vitro fluorescent probes to hybridize to specific complementary sequences.
Journal ArticleDOI
Structure, photochemistry and applications of metal-doped polyoxotitanium alkoxide cages.
TL;DR: The structural trends in M-POTs, their electronic behaviour and their applications as single-source precursors are highlighted, looking at current and future trends in the development of inorganic precursor for device applications.
Journal ArticleDOI
Preparation of multifunctional nanoparticles and their assemblies
TL;DR: This system can readily be adapted to produce a wide range of composites with different features, such as fluorescence, magnetism, plasmon resonance and multiple biofunctionalities.
Journal ArticleDOI
Mechanistic Aspects in the Formation, Growth and Surface Functionalization of Metal Oxide Nanoparticles in Organic Solvents
TL;DR: An overview of the main and basic organic reaction pathways in nonaqueous sol-gel approaches to metal oxide nanoparticles, and discusses in great depth the chemical formation mechanisms of many different types of metaloxide nanoparticles.
Journal ArticleDOI
Understanding the local environment of Sm3+ in doped SrZrO3 and energy transfer mechanism using time-resolved luminescence: a combined theoretical and experimental approach
TL;DR: A combined experimental and theoretical study on the photoluminescence properties of strontium zirconate (SZ) and Sm3+ doped SZ nanostructures is presented in this paper.
References
More filters
Journal ArticleDOI
Semiconductor Nanocrystals as Fluorescent Biological Labels
TL;DR: Semiconductor nanocrystals prepared for use as fluorescent probes in biological staining and diagnostics have a narrow, tunable, symmetric emission spectrum and are photochemically stable.
Journal ArticleDOI
In vivo cancer targeting and imaging with semiconductor quantum dots
TL;DR: Sensitive and multicolor fluorescence imaging of cancer cells under in vivo conditions are achieved and a whole-body macro-illumination system with wavelength-resolved spectral imaging is integrated for efficient background removal and precise delineation of weak spectral signatures.
Journal ArticleDOI
In Vivo Imaging of Quantum Dots Encapsulated in Phospholipid Micelles
Benoit Dubertret,Paris A. Skourides,David J. Norris,David J. Norris,Vincent Noireaux,Ali H. Brivanlou,Albert Libchaber +6 more
TL;DR: C encapsulated individual nanocrystals in phospholipid block–copolymer micelles acted as in vitro fluorescent probes to hybridize to specific complementary sequences and were followed to the tadpole stage, allowing lineage-tracing experiments in embryogenesis.
Journal ArticleDOI
The use of nanocrystals in biological detection
TL;DR: The emerging ability to control the patterns of matter on the nanometer length scale can be expected to lead to entirely new types of biological sensors capable of sensing at the single-molecule level in living cells, and capable of parallel integration for detection of multiple signals.