2 results about "Trifluoroacetic acid" patented technology

The invention relates to a method for preparing a perylene polyimide derivative film in the technical field of photoelectric materials. In the method, hydrazine hydrate is used for replacing trifluoroacetic acid, a positive electrode deposition method is adopted, and a dense and uniform film is prepared with a low voltage of 0.5-5V and a low current of 0.02-5mA within a relatively short deposition time. Moreover, composite films conforming to various absorption ranges are prepared through changing the structure and the matching of the perylene polyimide derivative.

The invention discloses a synthetic method of carbocyclic compound. Quinhydrone derivative and conjugated diene react in organic solvent under the catalysis of red lead and trifluoroacetic acid to prepare the carbocyclic compound. The method of the invention is 'one pot' method, takes cheap and accessible red lead as oxidant and catalyst, thus not only oxidizing quinhydrone derivative into corresponding benzoquinone derivative, but also catalyzing Diels-Alder reaction between benzoquinone derivative and conjugated diene, the reaction condition is mild, the reaction time is short, the product is easy to be purified, and the yield is high, thus being suitable for industrialized production and having wide application prospect.