Abstract: A method for regulating a photoelectric spectral response range, including: pre-pressurizing a gasket material, and drilling a circular hole at the center of indentation as a sample chamber; padding the sample chamber with a layer of photoelectric material, where two ends of the photoelectric material each are connected to one platinum sheet as an electrode; respectively connecting the two electrodes to probes of a digital source-meter, and using the digital source-meter to apply a 5 V bias voltage to the photoelectric material; placing a pressure calibration substance for pressure calibration; applying a high pressure to the photoelectric material, to make a pressure in the sample chamber reach a preset pressure; irradiating a near-infrared laser onto the photoelectric material through diamonds, controlling the presence or absence of illumination, and using the digital source-meter to display a current-time curve at the preset pressure; and determining a photoelectric spectral response range.

Abstract: The present invention provides a preparation method of amorphous GeH, and belongs to the field of preparation technologies of amorphous GeH. The preparation method provided in the present invention includes the following step: sealing crystalline GeH, a pressure calibration object, and a pressure transmitting medium in a cavity of a diamond anvil cell, and adjusting pressure in the cavity to obtain amorphous GeH. In the present invention, pressure is applied to the GeH in the sealed diamond anvil cell, to implement amorphization of the GeH at room temperature. In this way, impurities can hardly be found in the preparation method, and pure amorphous GeH can be obtained. In addition, the method provided in the present invention has simple operations and good repeatability.

Abstract: A method for preparing a lisinopril intermediate is provided. The method includes: treating (R)-hydroxy-4-phenylbutyrate with sulfonyl chloride in an organic solvent in the presence of a base to obtain a solution of sulfonate; reacting the obtained solution with a salt of trifluoroacetyl lysine; and obtaining a N2-[1-(S)-alkoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine by separating after the reaction is completed. The method provided has a shorter synthesis route, is easy to operate, has a low cost, and is suitable for industrial production.

Abstract: A method for preparing a lisinopril intermediate is provided. The method includes: treating (R)-hydroxy-4-phenylbutyrate with sulfonyl chloride in an organic solvent in the presence of a base to obtain a solution of sulfonate; reacting the obtained solution with a salt of trifluoroacetyl lysine; and obtaining a N2-[1-(S)-alkoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine by separating after the reaction is completed. The method provided has a shorter synthesis route, is easy to operate, has a low cost, and is suitable for industrial production.