Dichlorotris(triphenylphosphine)ruthenium(II) catalyzes the hydrogen transfer from alcohols to olefins. Kinetic studies were carried out at 170–190°C using the ruthenium(II) complex as homogeneous catalyst, benzyl alcohol, diphenylcarbinol, methylphenylcarbinol and benzoin as the hydrogen dono...

d-Fructose is hydrogenated to d-glucitol and d-mannitol using RuCl2 (PPh3)3 as catalyst at 100°C and atmospheric pressure. Besides hydrogenation, fructose undergoes transfer hydrogenation when propan-2-ol and butan-2-ol are used as solvents. Under an inert atmosphere (nitrogen), only transfer h...

Hydroxyapatite/bioactive glass laminate has been fabricated by hot pressing of stacked hydroxyapatite and bioactive glass powders at 1000°C (30 min, 30 MPa). This processing resulted in the formation of β-NaCaPO4 (β-rhenanite) interphase layers between each hydroxyapatite and bioactive glass ...

Tm3+ doped β-rhenanite (β-NaCaPO4) series were synthesized by solid-state reaction. The crystalline structure of β-rhenanite was simulated and the photoluminescence properties of NaCa1-xPO4:xTm3+ (0

The paper presents the mechanism of lactide polymerization initiated with zinc (II) acetylacetonate monohydrate. However, the actual initiator of this reaction is the complex containing a metal–oxygen bond, formed by the exchange reaction of acetylacetonate ligand with deprotonated lactide deri...

Reaction of Y5O(OiPr)13 (“yttrium iso-propoxide”) with one molar equivalent of isopropyl acetoacetate (iprac) per Y resulted in the formation of Y9O(OH)9(OiPr)8(iprac)8, a rare example of an yttrium alkoxo/hydroxo/oxo cluster. Reaction in a 1:3 molar ratio gave Y4(OH)2(iprac)10 and Y6(OH)6(ipr...

Thick (up to 20 μm) coatings of yttria-stabilized zirconia with columnar structure have been grown by thermal MOCVD at 630–820 °C using acetylacetonates of Zr and Y as precursors. The samples have been characterized by Scanning Electron Microscopy (SEM), Wave Dispersion X-ray Analysis (WDX) a...

The thermal decomposition of yttrium(III) hexanoate (Y(C5H11CO2)3)·xH2O in argon was studied by means of thermogravimetry, differential thermal analysis, IR-spectroscopy, X-ray diffraction at a laboratory Cu-tube source and in-situ experiments at a synchrotron radiation source as well as hot-st...

The yttrium as a sintering aid was introduced into polycarbosilane (PCS) to prepare yttrium-containing PCS (PYCS). Two types of yttrium-containing SiC fibres, the SiC(OY) fibres and the SiC(Y) fibres, were fabricated with PYCS. The structural evolution and the associated properties on changing f...

Metastable ZrO2 (tetragonal) solid solution powders with 2 to 5 mol% Y2O3 prepared from zirconium isopropoxide and yttrium acetylacetonate have been isostatically hotpressed for 1 h at 1230°C under 196 MPa. Dense sintered materials with an average grain size of 0.3 μm are fabricated from powde...

In the ZrO2-Y2O3 system, metastable ZrO2 solid solutions containing up to ≈46 mol% Y2O3 crystallize at low temperatures from amorphous materials prepared by the simultaneous hydrolysis of zirconium isopropoxide and yttrium acetylacetonate: t- and c-ZrO2 phases below and above 8 mol% Y2O3, respe...

High-quality reflective screens constitute an important part of multi-layer insulation materials. However, the metal foils currently used as thermal reflective screens are easily oxidized in an oxidizing environment. Nanoscale yttrium oxide exhibits high reflectivity in the near-infrared (NIR) r...

Background[166Ho]Ho-acetylacetonate-poly(L-lactic acid) microspheres were used in radioembolization of liver malignancies by intra-arterial administration. The primary aim of this study was to assess the stability and biodistribution of these microspheres.

Photodynamic therapy (PDT) is a highly specific and clinically approved method for cancer treatment in which a nontoxic drug known as photosensitizer (PS) is administered to a patient. After selective tumor irradiation, an almost complete eradication of the tumor can be reached as a consequence ...

Novel cobalt (II) tetra-β-[N(2-(1,3-benzothiazole))carboxamide] phthalocyanine (CoTBTCAPc) has been synthesized for the first time. The dark green colored complex was characterized by different physicochemical and analytical techniques. Cyclic voltammetric studies revealed that the synthesized ...

Owing to their high extinction coefficients, long absorption wavelengths, and modification tunable photophysical and photochemical properties, phthalocyanines (Pcs) have been widely used as photosensitizers for photodynamic therapy (PDT). Advances made in the past five years on the development o...

In the present study, we have dispersed copper phthalocyanine, nickel phthalocyanine and aluminium phthalocyanine hydroxide in sol-gel glasses. These have been exposed to methanol, benzene, diethylamine and bromine vapours. Interaction mechanism of phthalocyanines with these vapours has been stu...

Being a versatile class of functional dyes, phthalocyanines exhibit a range of intriguing properties enabling them to find practical applications in various disciplines. In the field of biomedicine, they can serve as selective fluorescent probes for bioanalysis and bioimaging, and as efficient p...

This study investigated the activity of photosensitive phthalocyanines on promastigotes and amastigotes of Leishmania (L.) amazonensis. Aluminum phthalocyanine chloride (AlPcCl), Aluminum phthalocyanine hydroxide (AlPcOH) and zinc phthalocyanine (PcZn) were tested in the presence (matte red LED,...

Vapor pressures were measured for acetonitrile + 1-butyl-3-methylimidazolium chloride ([C4mim][Cl]), + 1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF4]) and + 1-hexyl-3-methylimidazolium chloride ([C6mim][Cl]) at temperatures of 313 to 353 K by a quasi-static method. The experimental ...