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 below components and obtain a precursor, and
• Replacing hydroxyl group with a group derived from ethynyl;
• where the synthesized ethynyl derived composite is a polymer;
• Cyclic 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;
• and
• n2 is 0, 1, 2, 3 or 4.