摘要:
The invention relates to a method of forming a halide perovskite film, wherein deuterium oxide is mixed with a halide perovskite solution to form a halide perovskite film. The halide perovskite solution includes a metal cation, such as a lead, tin, germanium or bismuth cation, a halide anion, and at least one selected from an organic cation, such as methylammonium or formamidinium, and an inorganic cation, such as cesium, rubidium or potassium. A halide perovskite film comprising an organic cation with one or more carbon-deuterium bonds, and a solar cell comprising said halide perovskite film are also disclosed.
摘要:
This disclosure relates to techniques and methods to isolate and purify cannabinoids, such as CBDV, CBD, CBC, THCV, THC, CBN, CBG, CBDA, THCA, or CBGA. Evaporation and sonicating techniques are used to isolate and purify cannabinoids, such as CBDV, CBD, CBC, THCV, THC, CBN, CBG, CBDA, THCA, or CBGA. The resulting compounds find further use within the devices and compositions described herein as well as for preparative and analytical methods.
摘要:
Procédé pour former, cristalliser, des clathrates hydrates d'une molécule hôte dans un liquide comprenant de l'eau, caractérisé en ce que on réalise les étapes successives suivantes : - on refroidit le liquide jusqu'à une température inférieure ou égale à la température de cristallisation des clathrates hydrates; on met en contact le liquide refroidi avec des molécules hôtes capables de former des clathrates hydrates, adsorbées sur un support solide de grande surface spécifique en un matériau hydrophobe et apolaire, moyennant quoi les molécules hôtes sont désorbées du support solide de grande surface spécifique en un matériau hydrophobe et apolaire et réagissent avec l'eau du liquide pour donner un liquide contenant des clathrates hydrates et le support solide. Procédé de purification d'un liquide comprenant de l'eau et au moins une impureté, dans lequel on réalise les étapes successives suivantes : a1) on forme des clathrates hydrates de la molécule hôte dans le liquide par le procédé ci-dessus; b1) on sépare les clathrates hydrates et le support solide du liquide; c1) on dissocie les clathrates hydrates séparés pour obtenir d'une part de l'eau pure et d'autre part la molécule hôte de nouveau adsorbée sur le support solide.
摘要:
A method for the preparation of a metal-organic compound is provided. This method comprises the steps of (a) providing at least one metal precursor, (b) providing at least one bridging organic ligand, and (c) exposing together the metal precursor and the ligand to liquid CO 2 or supercritical CO 2 as a reaction medium, thereby producing said metal-organic compound.
摘要:
A means of directing nucleation and crystal growth has been developed in which these stages of crystallization are influenced by surface energy modifications to amorphous substrates. The surface energy of a substrate can affect the contact angle, line tension, wettability and energetics of the interaction with a supersaturated solution, and these factors are important in crystallization. The use of amorphous substrates creates an opportunity to modify their surface to create useful ranges of surface energies that enhance or inhibit, as may be advantageous, the thermodynamic, kinetic, or a combination of both, factors in nucleation, crystal growth, or crystallization from a supersaturated solution.
摘要:
A radiation-scattering composition, comprising a plurality of colloidal crystals or aggregates of colloidal crystals, each said crystal comprising a colloidal array of particles, such that the composition scatters radiation in a wavelength band in substantially all directions.