Functional Layer Material, Light-Emitting Device, and Display Panel

A functional layer material, selected from any of structures represented by a general formula (I);

• wherein IA represents a first substitution unit that includes at least one fused ring aryl group;
• X is selected from any of O, S and Se;
• Y is selected from any of O, S, N(R4), C(R5R6) and a single bond, and X and Y are same or different;
• L1 is selected from any of a single bond, substituted or unsubstituted C6 to C30 arylene groups, substituted or unsubstituted C1 to C30 heteroarylene groups, substituted or unsubstituted C7 to C30 aralkylene groups, and substituted or unsubstituted C2 to C30 heteroaralkylene groups;
• L2 is selected from any of substituted or unsubstituted C6 to C30 arylene groups, substituted or unsubstituted C1 to C30 heteroarylene groups, substituted or unsubstituted C7 to C30 aralkylene groups, and substituted or unsubstituted C2 to C30 heteroaralkylene groups;
• and L2 and L1 are same or different;
• R1, R2, R4, R5 and R6 are same or different, and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C1 to C39 alkyl groups, substituted or unsubstituted C2 to C39 alkenyl groups, substituted or unsubstituted C2 to C39 alkynyl groups, substituted or unsubstituted C6 to C39 aryl groups, substituted or unsubstituted C5 to C60 heteroaryl groups, substituted or unsubstituted C6 to C60 aryloxy groups, substituted or unsubstituted C1 to C39 alkoxy groups, substituted or unsubstituted C6 to C39 arylamine groups, substituted or unsubstituted C3 to C39 cycloalkyl groups, substituted or unsubstituted C3 to C39 heterocyclylalkyl groups, substituted or unsubstituted C1 to C39 alkylsilyl groups, substituted or unsubstituted C1 to C39 alkyl boryl groups, substituted or unsubstituted C6 to C39 aryl boryl groups, substituted or unsubstituted C6 to C39 arylphosphino groups, and substituted or unsubstituted C6 to C39 arylsilyl groups;
• n takes a value of a positive integer greater than or equal to 1;
• and
• q takes a value of a positive integer greater than or equal to 1.