A DNA immobilized-free ECL aptasensor was developed for the detection of 8-hydroxy-2´-deoxygunosine based on the diffusion mediated ECL quenching effect. This ECL aptasensor exhibited a high sensitivity and low detection...

Spinel Li4Ti5O12 hollow nanospheres self-assembled with lamellar nanocrystallites, prepared by employing colloid carbon spheres as templates, exhibit excellent capacity retention.

Novel butterfly-like CaTiO 3 dendrites dominantly bounded by {101} facets have been synthesized via a conventional hydrothermal by using tetramethylammonium hydroxide (TMAH) as a mineralizer and surface modifier. The wing-branches of the butterfly-like CaTiO 3 dendrites are composed of primary block tetragonal plates with dominant {101} facets overlapping and ranking around the stem of 〈131〉 directions in the same plane belonging to the group of {101}. With the basis of the experimental results and the lattice structure, a possible formation mechanism of the butterfly-like CaTiO 3 dendrites has been discussed and proposed. The preferential adsorption of the organic + N CH 3 4 ( ) ions released by the ionization of TMAH on {101} planes suppresses the deposition of the calcium titanate species on {101} planes, which induces the formation of the primary block tetragonal plates and their overlapping as well as ranking around 〈131〉 direction along {101} planes, resulting in the butterfly-like CaTiO 3 dendrites bounded with {101} facets. The investigation on the degradation of rhodamine-B demonstrates, due to the dominant exposition of the {101} facets, the butterfly-like CaTiO 3 dendrites display superior photocatalytic activity of more than four time that of CaTiO 3 microcuboids bounded with smart {101} and (010) facets.

In the title compound, C17H18N4O5·2C3H7NO, two solvent mol­ecules are linked to the main mol­ecule via N—H⋯O and O—H⋯O hydrogen bonds, forming a hydrogen-bonded trimer. Intra­molecular O—H⋯N hydrogen bonds influence the mol­ecular conformation of the main mol­ecule, and the two benzene rings form a dihedral angle of 10.55 (18)°. In the crystal, inter­molecular O—H⋯O hydrogen bonds link hydrogen-bonded trimers into ribbons extending along the b axis.