The article describes the properties of LuF3 and NaLuF4 fluorides doped with Yb3+ and Er3+ or Tm3+ ions, their comparison and application in latent fingermarks imaging. The single-phase materials were successfully synthesized by the hydrothermal method. They exhibited up-conversion (UC) phenomen...

Gadolinium (Gd3+) in Czochralski-grown lutetium fluoride (LuF3) has been investigated by electron paramagnetic resonance (EPR). Detailed analysis of the EPR angular dependencies reveals that Gd3+ entered substitutionally for Lu3+ in monoclinic Cs site symmetry. The Lu site seems to be more disto...

In this paper, phosphors of LuF3:Eu3+/Tb3+ have been successfully synthesized with small chelator ethylenediaminetetra acetic acid (EDTA) or amphiphilic polymer (polyethylene glycol, PEG-1000) as templates via a hydrothermal method. X-ray powder diffraction (XRD), scanning electronic microscope ...

Neodymium-doped lutetium fluoride (Nd3+:LuF3) thin films were successfully grown on MgF2 (0 0 1) substrates by pulsed laser deposition (PLD). It is void of cracks that are otherwise prevalent due to structural phase transitions in Nd3+:LuF3 during thin film deposition and bulk crystal growth. Ca...

Rare-earth-doped fluoride crystals have been widely investigated owing to their broadband laser and medical applications. The most promising is praseodymium (Pr3+)-doped lithium lutetium fluoride (LiLuF4) crystals. However, knowledge of the microstructure and local interactions of Pr3+-doped LiL...

The hydrothermal synthesis and crystal growth of LiLuF4 were investigated. Small crystals of LiLuF4 were produced but while investigating various alkali fluoride mineralizers, a new series of alkali lithium lutetium fluorides, including, LiKLuF5 and LiNaLu2F8, were synthesized under hydrothermal...

Transparent sodium lutetium fluoride aluminosilicate glasses and glass-ceramics were prepared by the melting-quenching method. The glasses were doped with 0.5 mol% Er3+ and 0.5Er3+-xYb3+ (x = 2, 4 mol%) to obtain efficient up-conversion (UC) emission, as well as infrared emission at ~ 1.0 and 1....

New 1-[ω-(2,3-dihydro-1H-inden-1-yl)- and (2,3-dihydro-5-methoxy-1H-inden-1-yl)alkyl]- and 1-[ω-(1,2,3,4-tetrahydronaphthalen-1-yl)- and (6-methoxy- or 6-fluoro-1,2,3,4-tetrahydronaphthalen-1-yl)alkyl] derivatives of 3,3-dimethylpiperidine were synthesized, as homologous compounds of an existi...

2,5-Difunctionalised-3,3-dimethylpiperidines were prepared by addition of nucleophiles to piperideinium salts, formed by electrophile-induced cyclisation of γ,δ-unsaturated imines with N-bromosuccinimide in alcoholic medium.

Starting from two carbocyclic analogs, a series of 3,3-dimethylpiperidine derivatives was prepared and tested in radioligand binding assays at σ1 and σ2 receptors, and at Δ8–Δ7 sterol isomerase (SI) site. The novel compounds mostly bear heterocyclic rings or bicyclic nucleus of differing li...

One pot synthesis and characterization of new 5-[2′-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-4,5,6,7-tetrahydro-thieno[3,2-c]pyridines (3a–k) using amides (2a–k) were reported. The prepared 5-[2′-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-4,5,6,7-tetrahydro-thieno[3,2-c]pyridine (3a) is a bioiso...

A series of novel 3-(E)-styryl-2H-chromene derivatives were synthesized and their monoamine oxidase (MAO) A and B inhibitory activities were evaluated. All compounds exhibited no inhibitory activity towards MAO-A at 10 μM whereas compounds 1–5, 7, 9, 11–13, 15 and 16 showed strong inhibitory ...

The base-induced formal [4 + 3] annulation reactions of N-(ortho-chloromethyl)aryl amides with nitrones or hydrazonoyl chlorides have been reported. When nitrones are used as the 1,3-dipole, the corresponding reaction afforded a series of 1,2,3,5-tetrahydrobenzo[e][1,2,4]oxadiazepine derivatives...

Rationale & ObjectiveAlthough primary atypical hemolytic uremic syndrome (aHUS) is associated with abnormalities in complement genes and antibodies to complement factor H, the role of complement in secondary aHUS remains debatable. We evaluated the usefulness of an ex vivo test to: (1) detect co...

Sixteen new thiazine–quinoline–quinones have been synthesised, plus one bicyclic analogue. These compounds inhibited neutrophil superoxide production in vitro with IC50s as low 60 nM. Compounds with high in vitro anti-inflammatory activity were also tested in a mouse model of acute inflammatio...

IntroductionCarboxylesterases (CES) play a very important role in the hydrophilic biotransformation of a huge number of structurally diverse drugs and especially play a leading part in the catabolic pathway of carboxylesters or thioesters. Hence, the aim of the present study was the comparison o...

Novel series of compounds consisting of 2-amidocyclohex-1-ene carboxylate and phenyl parts which are connected by enyne (compounds 2a–f), but-1-yne (compounds 4a–j), and phenylethylene (compounds 5a–f) linkers as HCA2 full agonists were designed and their functional activity using cAMP assay ...

N-[2-(4-iodophenyl)ethyl]-N-methyl-2-(1-piperidinyl)ethylamine, IPEMP, and the corresponding bromo derivative, BrPEMP, have been synthesized and characterized. Both BrPEMP and IPEMP were evaluated for sigma-1 and sigma-2 subtype receptor affinities and found to possess very high affinities for b...

The synthesis of 2-(N-aryolamino)benzothiazoles and 2-(N-aryolamino)benzimidazoles has been accomplished in the presence of copper catalyst. These reactions involve C-S and C-N cross-coupling reaction. All electron donating and withdrawing substituent's readily underwent the reaction to giv...

Totally 38 aryl E 2-propen-1-ones including nine substituted styryl 4-iodophenyl ketones have been synthesised using solvent-free SiO2–H3PO4 catalyzed Aldol condensation between respective methyl ketones and substituted benzaldehydes under microwave irradiation. The yields of the ketones are mo...