Preparation and application of polyacid-based inorganic-organic hybrid photochromic material

Organic diphosphonic acid is used as a construction main body, sodium molybdate metal salt containing hexavalent molybdenum with multiple coordination modes and high coordination number is selected as a construction node, and a heating reflux stirring method is utilized to obtain a polyacid-based material constructed by hexavalent molybdenum and organic diphosphonic acid through self-assembly. The defects that a common organic photochromic material is poor in stability, short in service life and the like are overcome. Therefore, the inorganic material and the organic photochromic material are combined to form the photochromic organic-inorganic hybrid material with the characteristics of the inorganic material and the organic photochromic material, and a new way is provided for design and application research of novel photochromic materials. Through covalent modification, a functional organic group is tightly connected with a polyacid system, so that synthesis of polyacid can be effectively controlled, new phy