Color resist material, filter, and preparation method thereof

A method of preparing a color resist material, which comprises the following steps:

• dissolving a phthalocyanine dye represented by one of Formula (8), Formula (9), and Formula (10) in a first solvent;
• adding tripyridyltriazine to the first solvent, followed by stirring and then standing still to obtain a phthalocyanine complex having a chemical structure of Formula (11);
• dissolving the phthalocyanine complex in a second solvent, and adding a catalyst to the second solvent for reaction;
• performing quenching, extraction, and separation and purification by column chromatography, to obtain a phthalocyanine trimer of chemical structure (12);
• and
• eluting the phthalocyanine trimer to obtain the color resist material having a chemical structure represented by Formula (1):
• wherein each of chemical structures U1, U2 and U3 is represented by Formula (1-2):
• wherein Z has an end connected to oxygen and another end connected to a double bond in Formula (1), Z is selected from alkylene and —YOX—, where X is selected from alkylene, and Y is selected from arylene,
• wherein in Formula (1), a benzene ring is also connected with other functional groups, each of the other functional groups is independently selected from one of hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy, and a heterocyclic group, and M represents a metal or a metal halide;
• wherein one of Q1 to Q4, one of Q5 to Q8, one of Q9 to Q12, one of Q13 to Q16, one of Q17 to Q20, one of Q21 to Q24, one of Q25 to Q28, one of Q29 to Q32, one of Q33 to Q36, one of Q37 to Q40, one of Q41 to Q44, and one of Q45 to Q48 are selected from —O—Z—CH═CH2, where Z is selected from one of alkylene and —YOX—, in which X is selected from alkylene, and Y is selected from arylene;
• each functional group Q1 to Q48 is independently selected from one of hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy, and a heterocyclic group;
• and
• wherein M is selected from a metal or a metal halide.