Novel inorganic alkali and alkaline earth hydrides of the f o r m u l a MH *, MH 2 * , and MH X * wherein M is the metal, X , is a halide, and H * comprises a novel high binding energy hydride ion were synthesized in a high temperature gas cell by reaction of atomic hydrogen with a catalyst and MH , MH 2 , or MX corresponding to an alkali metal or alkaline e a r t h metal compound, respectively...

A series of dendritic 8-hydroxyquinoline (8-HQ) and 5-dialkyl(aryl)aminomethyl-8-HQ derivatives were synthesized and their fluoroionophoric properties toward representative alkali, alkaline earth, group IIIA and transition metal ions were investigated. Among the selected ions, Zn(II) enhanced the fluorescence of N-di-(methoxycarbonylethyl)aminoethyl-3-[4-(8-hydroxyquinolin-5-ylmethyl)piperazin-...

In pursuit of a new family mechanically responsive luminescent materials, it is aimed to differentiate triboluminescence (TL) from photoluminescence (PL). A β-diketonate ligand with tert-butyl groups (2,2,6,6-tetramethylheptane-3,5-dionate: tmh) selected quench EuIII-centered PL via ligand-to-metal charge transfer, whereas tmh provides efficient photosensitization TbIII ions. Bright TL observed...

Porous membranes with ultrafast ion permeation and high ion selectivity are highly desirable for efficient mineral separation, water purification, and energy conversion, but it is still a huge challenge to efficiently separate monatomic ions of the same valence and similar sizes using synthetic membranes. We report metal organic framework (MOF) membranes, including ZIF-8 and UiO-66 membranes wi...

Potassium ions at low concentrations stimulate cytokinin-dependent betacyanin synthesis in Amaranthus tricolor seedlings more than other alkali metal ions when tested as the chloride salts. The sequence of relative stimulation is K(+) > Rb(+) > (Na(+) = Li(+)). Calcium and Mg(2+) ions are inhibitory at concentrations > 1 millimolar when tested as chlorides. Anions also have an effect on the deg...

The mixed Ga/Tl trielides A8GaTl10 (A=K, Rb, Cs), which were yielded from stoichiometric melts of the elements, crystallize in tetragonal K8ZnIn10-type structure (SG P4/nnc, a=1018.58(3)/1047.14(6)/1077.74(10), c=1363.71(5)/1400.07(8)/1435.4(2) pm, Z=2, R1=0.0187/0.0209/0.0218 for A=K/Rb/Cs). structures contain isolated ten-vertex endohedral Ga-centered clusters [[email protected]10]8−, Tl atom...

In the previous chapter, the focus was mainly on the behavior of ions in solution. The effect of concentration, solvent, as well as pH have been investigated; furthermore, alkali metal ions as well as transition metal ions have been studied. In this chapter, the investigation will be extended from ions to molecules, more specifically toward the behavior of amino acids in solution. Amino acids a...