Chiral polysilsesquioxane containing arylidene in skeleton and preparation method and application thereof

The invention provides chiral polysilsesquioxane containing arylidene in the skeleton and a preparation method and application thereof. The monomer of the chiral polysilsesquioxane has the following general formula: (EtO)3Si-(CH2)n-amino acid unit-aromatic perssad-amino acid unit-(CH2)n-Si(EtO)3, wherein n is any integer between 1 and 10, the amino acid unit comprises common amino acids like valine, isoleucine, alanine or phenylalanine, and the aromatic group is arylidene in diaminobenzene, biphenyl diamine, dipyridyl diamine, and bithiophene diamine. The chiral polysilsesquioxane has stable chemical properties, is simple to synthesize, is convenient to use, can well adsorb aryl compounds and heavy metal ions, and also has great application value in terms of chiral separation and chiral catalysis.