2results about How to "Strong absorbance" patented technology

The application provides a high-bonding high-light-absorption AlN-based composite coating and a preparation method and application thereof. The composite coating comprises a bottom dense support layer and a top loose light-absorption layer, and the two layers are homomorphous. The preparation method comprises the following steps: adopting an arc ion locking technology to deposit the bottom dense support layer on an ion etching activated metal base, the bottom dense support layer has a first columnar crystal structure with dense arrangement; and then adopting a high-power pulse magnetron sputtering technology to deposit the top loose light-absorption layer on the bottom dense support layer, the top loose light-absorption layer has a second columnar crystal structure with loose arrangement. The composite coating provided by the application has high light-absorption anti-reflection performance and excellent high-temperature oxidation resistance in a wide wave band, the bonding force with the metal base reaches 28 N, the scratch resistance is strong, the chemical stability is high, and the preparation method is simple.

The invention provides a stepped bridged ring compound and a preparation method and application thereof, tetra-alkyne compounds and 6, 13-bis (triisopropyl silyl ethynyl) pentacene react to obtain the stepped bridged ring compound, the preparation method is simple and efficient, a catalyst is not needed, high yield can be obtained by controlling the reaction temperature, and the preparation method is mild, simple and green. The synthesized stepped bridged ring compound has high atom economy, and the Abs of the product can reach 2.0 or above in the interval of 250 nm to 350 nm, which shows that the absorbance of the substance is good, and the substance can be well used for preparation of optical materials.