ZnO as an electron transporting material (ETM) in perovskite solar cells has many benefits, including low temperature processability and high mobility. We explore here for the first time, hysteresis-less mesostructured perovskite solar cells with an incredible steady-state efficiency of 20.62% p...

In several coal mines in the Upper Silesian Coal Basin (USCB), in Poland, radium removal from mine water was necessary in order to mitigate the negative results of radium release with mine effluents. The most efficient method of radium removal was based on the application of barium chloride, imp...

Sixteen alkali-activated (AA) mortars were mixed and cured at water or air-dried conditions to explore the effectiveness and limitation for the application of barium hydroxide (Ba(OH)2) as an additional activator in calcium hydroxide (Ca(OH)2)-activated ground granulated blast-furnace slag (GGBS...

This paper presents research results on the effects of repeated treatments with saturated solutions of calcium hydroxide (lime water) or barium hydroxide (barium water) on consolidating a friable lime mortar. The influence of lime or barium water treatment on various mainly mechanical characteri...

In this study, barium hydroxide was proposed as a main activator for ground granulated blast-furnace slag (GGBFS) to produce a strong binder, and it was compared to calcium hydroxide in terms of strength development, reaction products, and microstructure. The Ba(OH)2-activated GGBFS (BHAS) achie...

Two lime mortars were treated under laboratory conditions to assess the potential effectiveness of three consolidation treatments performed with: an ethyl silicate, a nanolime and a solution of barium hydroxide. The consolidation products were applied by direct contact capillarity. The duration ...

The paper focuses on the study of barium hydroxide applied to two high porosity limestones from Portugal (Ançã stone, with 27% porosity) and Italy (Lecce stone, with 37% porosity), both in the laboratory and onsite. The results show that barium hydroxide acts both through carbonation with atmosp...

Stereochemically defined and epimeric phosphonamidate methyl ester-containing peptide analogues were synthesised and were found to be moderate inhibitors of the HIV-1 proteinase. All of the analogues containing the phosphonamidate ester grouping showed a marked ability to enter cells, as highlig...

Thyrotropin-releasing hormone (TRH) analogs in which the N-1(τ) or the C-2 position of the imidazole ring of the histidine residue is substituted with various alkyl groups and the l-pyroglutamic acid (pGlu) is replaced with the l-pyro-2-aminoadipic acid (pAad) or (R)- and (S)-3-oxocyclopentane-...

2-exo-Substituted 2-endo-acetamidonorbornenes (3) were synthesized in a two-step procedure from 2-acetamidonorbornene-2-carboxylic acids (1, 1′) with exceedingly high exo-selectivities based on a new approach involving anodic decarboxylation followed by organoaluminum-promoted nucleophilic subs...

A variety of 2-exo-substituted 2-endo-acetamidonorbornenes (2a–g) were synthesized in exceedingly high exo selectivities by organoaluminum-promoted nucleophilic substitution on 2-endo-acetamido-2-exo-methoxynorbornene (1).

Oximes were converted to parent carbonyl compounds in good yields by treating with N-bromo-N-benzoyl-4-toluenesulfonamide.

Thermolysis of O-phenylcarbamoyl benzophenone oxime (I) leads to the formation of N2, NH3, CO2, benzene, biphenyl, aniline, azobenzene, benzonitrile, benzanilide, carbanilide, benzophenone, benzophenone-N-phenylimine and 2-phenylbenzoxazole. Analogous results are also obtained on thermolysis of ...

The kinetics and mechanism of hydrolysis of various 1-, 3- and 1,3-acyloxymethyl derivatives of 5-fluorouracil were studied to assess their potential as prodrugs with the aim of enhancing the delivery characteristics of the parent drug. All the derivatives hydrolyzed to yield 5-fluorouracil in q...

l-Phenylalanine cyclohexylamide has been used as a chiral auxiliary for the medium-scale resolution of 2′,1′:1,2;1″,2″:3,4-dinaphthcyclohepta-1,3-diene-6-amino-6-carboxylic acid (Bin), an α,α-disubstituted glycine with only axial dissymmetry. Coupling of X–Bin–OH (X=Ac; Bz) with H–(l)-P...

Carbon monoxide (CO) is a poisonous gas, recognized as a silent killer for the 21st century. It is produced from the partial oxidation of carbon containing compounds. The catalytic oxidation of CO receives a huge attention due to its applications in different fields. In the present work, hopcali...

The synthesis of the cobalt hydrides of formula CoH(CO)4—n[P(n-C4H9)3]n (n=2, 3) are described and their chemical and spectroscopic properties are discussed. The complexes homogeneously catalyze the hydrogenation of alkynes and aldehydes and isomerization of olefins. These reactions are discuss...

Reactions of several allyloxy- and allylamino-benzylamines and a benzamide with [Rh(CO)2Cl]2 give monodentate rhodium complexes which show no evidence of alkene coordination. Reaction of these and related compounds with HRh(CO)(PPh3)3 give products arising from double bond isomerisation followed...

X-Ray crystallographic analysis of five isomeric methyl 3,6-anhydrohexofuranosides, methyl 3,6-anhydro-β-d-glucofuranoside (1), methyl 3,6-anhydro-α-l-idofuranoside (2), methyl 3,6-anhydro-β-d-mannofuranoside (3), methyl 3,6-anhydro-α-d-glucofuranoside (5), and methyl 3,6-anhydro-α-d-mannof...

1,2,5-Tri-O-acetyl-3,6-anhydro-3-thio-d-glucofuranose was synthesised starting from d-glucose and was used as a donor for the glycosidation of 4-cyano- and 4-nitrobenzenethiol. In the latter reaction, besides an anomeric mixture of the 4-nitrophenyl 2,5-di-O-acetyl-3,6-anhydro-1,3-dithio-d-gluco...