The invention discloses soluble aliphatic chain-containing
polyimide with adjustable information
memory performance, and belongs to the field of organic information memory materials. The soluble aliphatic chain-containing
polyimide is characterized in that two kinds of
diamine with electronic property are compounded at first, the two kinds of
diamine contain aliphatic chains in different lengths, and then the two kinds of
diamine are respectively in polycondensation with dicarboxylic anhydride with
electron acceptor property, so that the soluble aliphatic chain-containing
polyimide with the soluble aliphatic chain-containing polyimide is prepared, and the structure of the soluble aliphatic chain-containing polyimide is as shown in a formula (I) shown in the description. The soluble aliphatic chain-containing polyimide disclosed by the invention has the advantages of stable
memory performance and fast response speed, and an information
memory behavior of a material can be controlled by changing the length of the aliphatic chains or the variety of the diamines; the soluble aliphatic chain-containing polyimide has good
solubility and is beneficial for
processing of the material and preparation of memory devices; meanwhile, a compounding method of the soluble aliphatic chain-containing polyimide is simple, the yield is high, device preparation is simple and easy, the efficiency is high, and a wide application prospect in the field of information memory materials are obtained.