Ethynyl derived composite, a composition comprising thereof, a method for manufacturing a coating by it, and a method for manufacturing a device comprising the coating

A synthesis method of an ethynyl derived composite comprising;

• Reacting the following components
• Cy1 is a C5-6 alicyclic compound;
• Ph1 and Ph2 are each independently C6-10 aromatic hydrocarbon rings, which individually compose adjacent 2 carbons in cyclic Cy1;
• R5 and R6 are each independently hydrogen, halogen, cyano, unsubstituted C1-6 alkyl, or C1-6 alkyl substituted with at least one substituent selected from halogen and cyano;
• R8 and R9 are each independently hydrogen, unsubstituted C1-6 alkyl, C1-6 alkyl substituted with at least one substituent selected from halogen or cyano, unsubstituted C6-16 aromatic hydro carbon, C6-16 aromatic hydro carbon substituted with at least one substituent selected from halogen or cyano, unsubstituted C1-6 alkylene linking to the other portion of the ethynyl derived composite, C1-6 alkylene substituted with at least one substituent selected from halogen or cyano linking to the other portion of the ethynyl derived composite, or a direct bond bonding to the other portion of the ethynyl derived composite;
• n3 and n4 are each independently 0, 1, 2, 3 or 4;
• n5 is 0 or 1;
• Ar is each independently C6-41 aromatic hydrocarbon ring;
• R4 is each independently C1-6 alkyl, halogen or cyano;
• n1 is 1, 2, 3 or 4;
• n2 is 0, 1, 2, 3 or 4;
• and obtain a precursor, and
• Replacing hydroxyl group with a group derived from ethynyl;
• where the synthesized ethynyl derived composite is a polymer of units A and units B, where mol ratio of unit A represented by formula (1) and unit B represented by formula (2) in the ethynyl derived composite is 60:40 to 40:60;
• wherein the unit A is represented by below formula (1)
• wherein Ar, R4, n1 and n2 are each independently are defined above;
• R1 is each independently hydrogen, halogen, cyano, unsubstituted C1-6 alkyl, C1-6 alkyl substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano, unsubstituted C3-20 aromatic ring, or C3-20 aromatic ring substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano;
• R2 and R3 are each independently hydrogen, halogen, cyano, unsubstituted C1-6 alkyl, C1-6 alkyl substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano, unsubstituted C3-20 aromatic ring, or C3-20 aromatic ring substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano;
• the unit B is represented by below formula (2);
• Cy1, Ph1, Ph2, R5, R6, R8, R9, n3, n4 and n5 are each independently defined above;
• the broken straight line is a direct bond bonding to the other portion of the ethynyl derived composite;
• R7 is a direct bond bonding to the other portion of the ethynyl derived composite;
• optionally unit A concentration compared to the whole units in one ethynyl derived composite according to the invention is 30-70 mol percent, and the unit B concentration compared to the whole units in one ethynyl derived composite according to the invention is 30-70 mol percent.