Materials Literature
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The synthesis of a novel aza-BODIPY dye functionalized with fused pyrazine rings, suitable for use as a selective colorimetric and fluorometric sensor for NH(4)(+), is outlined. In addition to significant fluorescence quenching, an obvious colorimetric change from green to red-pink is observed enabling facile "naked-e…
This paper presents a facile method for the fabrication of core-shell-structured NaYF4:Yb, Er/Tm@SiO2@Fe3O4 nanocomposite particles (NCPs). In this approach, when the EDTA-capped NaYF4:Yb, Er/Tm nanoparticles were mixed with the oleic acid-modified magnetic Fe3O4 nanoparticles in isopropyl alcohol, followed by additio…
We have fabricated suspended few-layer (1-3 layers) graphene nanoribbon field-effect transistors from unzipped multi-wall carbon nanotubes. Electrical transport measurements show that current annealing effectively removes the impurities on the suspended graphene nanoribbons, uncovering the intrinsic ambipolar transfer…
Monodisperse CuInS(2) nanocrystals are produced by injecting mixed metal-oleate precursors into hot organic solvents containing the dissolved sulphur sources. A better understanding of the formation mechanism of CuInS(2) has enabled us to tailor anisotropic shapes in the form of triangular-pyramid, circular cone, and…
We calculate the network fluid regime and phase diagrams of binary mixtures of patchy colloids, using Wertheim's first order perturbation theory and a generalization of Flory–Stockmayer's theory of polymerization. The colloids are modelled as hard spheres with the same diameter and surface patches of the same type, A.…
By introducing different polyoxotungstates into the Ag–H2biim system, four new compounds with distinct architectures, Ag2(H2biim)4(W6O19)·2H2O (1), Ag6(H2biim)6(SiW12O40)(OH)2·2H2O (2), Ag6(H2biim)6(PW12O40)(OH)3·H2O (3) and Ag6(H2biim)6(P2W18O62)·12H2O (4) (H2biim = 2,2′-biimidazole), have been hydrothermally synthes…
During the last decade, advancement of nanotechnology has revolutionized various fields such as electronics, optics, materials science as well as architecture, and medicine. However, their health and environmental impact is not fully understood. TiO2 and ZnO nanoparticles (NPs), which are abundantly used for commercia…
A novel class of efficient visible light sensitized antenna complexes of Eu(3+) based on the use of a series of highly conjugated β-diketonates, namely, 1-(1-phenyl)-3-(2-fluoryl) propanedione, 1-(2-naphthyl)-3-(2-fluoryl)propanedione, 1-(4-biphenyl)-3-(2-fluoryl) propanedione, and 2,2'-bis(di-p-tolylphosphino)-1,1'-b…
The present study focuses on the interaction of hydrogen microwave CVD plasma with nanodiamonds (NDs). Hydrogen treated NDs (H-NDs) were characterized using electron spectroscopies (XPS, AES) without air exposure. A surface temperature higher than 700 °C is needed to remove the oxygen present on raw NDs. The kinetics…
Ordering of the tetrahedral site vacancies in two crystals of refined compositions K0.93(1)Fe1.52(1)Se2 and K0.862(3)Fe1.563(4)Se2 produces a fivefold expansion of the parent ThCr2Si2 unit cell in the ab plane which can accommodate 20% vacancies on a single site within the square FeSe layer. The iron charge state is m…
The combination of carbon nanotubes with inorganic nanostructures is believed to be a powerful tool for constructing novel organic-inorganic hybrid architectures with desirable functionalities and applications in many fields ranging from energy storage and conversion, to catalysis, sensing, and medical diagnosis and t…
Eggshell membrane (ESM) has been employed as a unique and especially efficient synthetic platform capable of generating fluorescent silver and gold nanoclusters via various chemical routes. Potential applications of the metal/ESM adducts include recyclable catalysts, sensing paper, surface enhanced Raman scattering in…
We investigated the relationship between the elastic constants of host nematic liquid crystals (NLCs) and the thermal stability of their liquid crystalline blue phase I (BPI). By adding bent-core molecules to a conventional NLC, we could gradually increase (decrease) the elastic constant K11 (K33). We confirmed experi…
Release of ca. 17.8 wt% of hydrogen was observed from the Co-catalyzed lithium borohydride ammoniate, Li(NH3)4/3BH4 (with equivalent protic and hydridic hydrogen atoms, composed of solid Li(NH3)BH4 and liquid Li(NH3)2BH4), in the temperature range of 135 to 250 °C in a closed vessel. The low NH3 equilibrium vapor pres…
The asymmetric oxidation of sulfides by H(2)O(2) to give optically active sulfoxides (ee up to 90%) was carried out in methanol and water using chiral water-soluble iron porphyrins as catalysts.
MnO2/graphene composites were prepared for the electrode material of supercapacitors. MnO2 was synthesized on a gold plate by the electrodeposition method. Graphene prepared by thermal CVD was transferred onto the MnO2 layer. These processes were repeated to make multilayer structures. The optimal performance of the M…
A novel class of monolith-type boron nitride hierarchical foams has been prepared through an integrative chemistry-based synthetic path. These materials contain interconnected pores in the nanometre to the micrometre range with high porosity (∼75 vol%), a specific surface area up to 300 m2 g−1 and a resistance toward…
Natural halloysite nanotubes with a 15-nm internal lumen and a 50 nm outer diameter were investigated as a nanocontainer for the loading and extended release of glycerol for cosmetic applications. Cytotoxicity testing of the halloysite was conducted on 3T3 and MCF-7 cells, and the tubules showed no toxic effect on the…
We present a modular dendrimer-based platform for simultaneous dual fluorescence imaging of hydrogen peroxide (H2O2) and pH gradients produced in living cells. Acetyl-capped G5 PAMAM dendrimers functionalized with boronate-caged Peroxyfluor-1 (PF1) fluorophores for H2O2 detection and semi-naphthorhodafluor (SNARF2) dy…
Multifunctional nanocomposite nanoparticles for simultaneous fluorescence and magnetic resonance (MR) imaging, and pH-sensitive drug release were fabricated by immobilizing pH responsive hydrazone bonds, magnetite nanoparticles and fluorescent dyes in mesoporous silica nanoparticles. pH dependent release of doxorubici…