The subject of the invention are new functionalized unsaturated double-decker derivatives of divinylsilsesquioxanes of the general formula 1. In the formula, R1 are the same and stand for an aryl group containing from 1 to 2 rings, R2 are the same and stand for an alkyl group containing carbon atoms from C1 to C2, substituted or unsubstituted aryl group containing from 1 to 2 rings, R3 are the same and stand for a substituted or unsubstituted aryl group containing from 1 to 2 rings or a group of the formula —R4-R5—, where R4 stands for an alkyl group containing carbon atoms from C1 to C3, while R5 stands for aryl group containing from 1 to 2 rings.