Materials Literature
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Highly fluorescent SiO2@CdTe@SiO2 (SQS) nanoparticles as a new nanoprobe in biomedical imaging have been successfully synthesized by a novel approach. The size of SQS can be tuned from 39 to 76 nm by controlling reaction parameters, including the amount and the type of silica precursor, the ratio of silica precursor t…
Magnetic nanoparticles (NPs) are of increasing interest in various industrially relevant products. For these, the development of greener and faster approaches facilitating scaling-up production is of paramount importance. Here, we report a novel, green and potentially scalable approach for the continuous and ultrafast…
The role of palladium (Pd) in the reduction of graphene oxide (GO) thin films was investigated using a Pd assisted grafting technique. The structural and optical characteristics of these thin films were obtained from various spectroscopic analyses, which confirmed increased C[double bond, length as m-dash]C-C aromatic…
1-Pyrenemethanol initiated hyperbranched polyglycerol (PiHP) has been synthesized and utilized to non-covalently functionalize pristine multi-walled carbon nanotubes (CNTs) through π-π stacking interactions. Mediated with the PiHP coating, a variety of metal nanoparticles (Au, Ag, Pd and Pt) were in situ generated and…
As a unique type of building blocks for directional self-assembly of superstructures as well as a novel class of stabilizers in polymer alloys, Janus nanoparticles if blended with immiscible homopolymers may not only open a route for fabrication of nanostructured materials with hierarchical order but also provide a me…
We report the observation of simultaneous two and three photon resonances, enhancing the third-order NLO susceptibility in a thin film of an azo-dye polymer. The possibility of 2-3 orders of magnitude increase in χ((3)) susceptibility is sustained by quantum mechanical calculations. This improves the applications of a…
Two kinds of thermally responsive polymers P(FAA-NIPA-co-AAm-co-ODA) and P(FPA-NIPA-co-AAm-co-ODA) containing folate, isopropyl acrylamide and octadecyl acrylate were fabricated through free radical random copolymerization for targeted drug delivery. Then the micelles formed in aqueous solution by self-assembly and we…
We demonstrate the fabrication of all-inorganic heterostructured n–p junction devices made of colloidal PbS quantum dots (QDs) and TiO2 nanorods (NRs). The entire device fabrication procedure relies on room-temperature processing, which is compatible with flexible plastic substrates and low-cost production. Through Ke…
Utilizing human serum albumin as a reducing plus stabilizing agent, fluorescent Au/Ag core/shell nanocrystals (NCs) were prepared in water at pH 9.0 and at physiological temperature (37 °C). The preparation of Au/Ag NCs did not involve any external reducing or stabilizing agents, and thus was eco-friendly. Moreover, t…
A hybrid graphene/Ni–Ce mixed oxide (Gs–NiCexOy) was facilely fabricated using a co-precipitation and subsequent calcination route. Ni–Ce mixed oxide nanoparticles with a uniform diameter of 10–15 nm were assembled on the graphene nanosheets, as demonstrated by X-ray diffraction, Raman spectroscopy, X-ray photoelectro…
Electron microscopy techniques yield information for crystal structure analysis that is remarkably complementary to that obtained from X-ray powder diffraction data. Structures of polycrystalline materials that resist solution by either method alone can sometimes be solved by combining the two. For example, the intens…
Designing new types of cell scaffolds to resist protein adsorption and promote cell adhesion is becoming very important in the field of tissue engineering. Herein, by coupling ethylene glycol (EG) monomers and Arg-Gly-Asp (RGD) onto C2-benzene cores, a family of PEG-like low molecular weight gelators (LMWGs) functiona…
The photosensitizer (PS) methylene blue (MB) is confined in the close vicinity of an Au nanorod, by incorporating it into SiO2 during Au-core/SiO2-shell nanoparticle (NP) growth. Upon light irradiation of the Au@(SiO2-MB) NPs, generation of reactive oxygen species and their transport to the cytoplasm are directly resp…
Sr–Zn ferrite composites were synthesized by chemical coprecipitation with different sintering process. The composites were characterized by XRD, XPS, IR, VSM, and N2-adsorption. The results revealed that the composites were composed of S-type ZnFe2O4 and M-type SrFe12O19. Zn2+ ions inserted and occupied the 12k or 2a…
A novel durian-like multi-functional water soluble Fe3O4–Au nanocomposite is fabricated via a facile layer-by-layer technology in which a mercapto-silica shell is utilized as a functional coating on the central Fe3O4 nanoparticle cluster. Then gold nanoparticles are loaded onto the surface of Fe3O4, stabilized by Au–S…
A new noncentrosymmetric lanthanum beryllium borate compound, LaBeB3O7, has been designed and synthesized by spontaneous crystallization with molten flux. In its crystal structure, boron and beryllium atoms are mutual disorder occupied and coordinated with four oxygen atoms forming XO4 tetrahedra (X = B, Be). The XO4…
There is a growing interest to design biomimetic self-assembled composite films from renewable resources aimed at a combination of high toughness, strength and stiffness. However, the relationship between interfacial interactions of the components and the mechanical performance of the composite is still poorly underst…
The iodouranium(III) complex with two hydrotris(3,5-dimethylpyrazolyl)borate ligands is shown to adopt three closely related forms in the solid state. In addition to the previously reported structure for [U(Tp(Me2))2I], in which one of the pyrazolyl rings coordinates side-on to the U atom, another structure incorporat…
This study presents the effects of the type of polymer and gas on blister fracture in terms of visualizing O-ring behavior under high-pressure gas. To visualize blisters (internal cracks) by optical microscopy, transparent EPDM and VMQ O-rings were molded, and a special viewable high-pressure vessel with a glass viewp…
The problem of controlling the structure and properties of filled polymer compositions based on epoxy materials and various fibrous and disperse fillers is investigated. Four scale levels of the filled polymer materials are considered, and examples of their structure at different stages of the fracture process are giv…