An organic light-emitting diode comprising an anode An and a cathode Ka and a light-emitting layer E disposed between the anode An and the cathode Ka and optionally at least one further layer selected from the group consisting of: at least one electron/exciton blocking layer, at least one hole/exciton blocking layer, at least one hole injection layer, at least one hole transporting layer, at least one electron injection layer and at least one electron transporting layer, characterized in that the organic light-emitting diode comprises at least one compound of the general Formula I, which is present in the light-emitting layer E and/or in at least one further layer, wherein: X is NR 1, S or O, R 1 is substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 6 -C 30 aryl, or substituted or unsubstituted heteroaryl having 5 to 30 ring atoms; R 2, R 3, R 4, R 5, R 6, R 7 are each independently substituted or unsubstituted C 1 -C 20 alkyl or substituted or unsubstituted C 6 -C 30 aryl, or a structure of the general Formula (c) R a, R b are each independently substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 6 -C 30 aryl, substituted or unsubstituted heteroaryl having 5 to 30 ring atoms or a substituent with donor or acceptor action, selected from the group consisting of: C 1 -C 20 alkoxy, C 6 -C 30 aryloxy, C 1 -C 20 alkylthio, C 6 -C 30 arylthio, SiR 14 R 15 R 16, halogen radicals, halogenated C 1 -C 20 alkyl radicals, carbonyl (-CO(R 14)), carbonylthio (-C = O(SR 14)), carbonyloxy (-C = O(OR 14)), oxycarbonyl (-OC = O(R 14)), thiocarbonyl (-SC = O(R 14)), amino (-NR 14 R 15), OH, pseudo halogen radicals, amido (-C = O (NR 14)), -NR 14 C = O (R 15), phosphonate (-P (OR 14) 2, phosphate (-OP (OR 14) 2), phosphine (-PR 14 R 15), phosphine oxide (-P R 14 2), sulfate (-OS 2 OR 14), sulfoxide (-S R 14), sulfonate (-S 2 OR 14), sulfonyl (-S 2 R 14), sulfonamide (-S 2 NR 14 R 15), NO 2, boronic esters (-OB(OR 14) 2), imino (-C = NR 14 R 15), borane radicals, stannane radicals, hydrazine radicals, hydrazone radicals, oxime radicals, nitroso groups, diazo groups, vinyl groups, sulfoximines, alanes, germanes, boroximines and borazines, R 14, R 15, R 16 are each independently substituted or unsubtituted C 1 -C 20 alkyl, or substituted or unsubstituted C 6 -C 30 aryl; q, r are each independently 0, 1, 2 or 3; wherein when q or r are 0, all substitutable positions of the aryl radical are substituted by hydrogen, wherein the radicals and indices in the group of Formula (c) X"', R 5 "', R 6 "', R 7 "', R a "', R b "', q'" and r'" are each independently as defined for the radicals and indices of compounds of the general Formula X, R 5, R 6, R 7, R a, R b, q and r, wherein in case the compound of the general Formula is only present in the light-emitting layer or in the light-emitting layer and in the hole transporting layer and the group X is NR 1, at least one of the R 1 to R 7, R a or R b radicals in the compounds of Formula includes at least one heteroatom, excluding the following compounds: X is NR 1, S or O, R 1 is substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 6 -C 30 aryl, or substituted or unsubstituted heteroaryl having 5 to 30 ring atoms; R 2, R 3, R 4, R 5, R 6, R 7 are each independently substituted or unsubstituted C 1 -C 20 alkyl or substituted or unsubstituted C 6 -C 30 aryl, or a structure of the general Formula (c) R a, R b are each independently substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 6 -C 30 aryl, substituted or unsubstituted heteroaryl having 5 to 30 ring atoms or a substituent with donor or acceptor action, selected from the group consisting of: C 1 -C 20 alkoxy, C 6 -C 30 aryloxy, C 1 -C 20 alkylthio, C 6 -C 30 arylthio, SiR 14 R 15 R 16, halogen radicals, halogenated C 1 -C 20 alkyl radicals, carbonyl (-CO(R 14)), carbonylthio (-C = O(SR 14)), carbonyloxy (-C = O(OR 14)), oxycarbonyl (-OC = O(R 14)), thiocarbonyl (-SC = O(R 14)), amino (-NR 14 R 15), OH, pseudo halogen radicals, amido (-C = O (NR 14)), -NR 14 C = O (R 15), phosphonate (-P (OR 14) 2, phosphate (-OP (OR 14) 2), phosphine (-PR 14 R 15), phosphine oxide (-P R 14 2), sulfate (-OS 2 OR 14), sulfoxide (-S R 14), sulfonate (-S 2 OR 14), sulfonyl (-S 2 R 14), sulfonamide (-S 2 NR 14 R 15), NO 2, boronic esters (-OB(OR 14) 2), imino (-C = NR 14 R 15), borane radicals, stannane radicals, hydrazine radicals, hydrazone radicals, oxime radicals, nitroso groups, diazo groups, vinyl groups, sulfoximines, alanes, germanes, boroximines and borazines, R 14, R 15, R 16 are each independently substituted or unsubtituted C 1 -C 20 alkyl, or substituted or unsubstituted C 6 -C 30 aryl; q, r are each independently 0, 1, 2 or 3; wherein when q or r are 0, all substitutable positions of the aryl radical are substituted by hydrogen, wherein the radicals and indices in the group of Formula (c) X"', R 5 "', R 6 "', R 7 "', R a "', R b "', q'" and r'" are each independently as defined for the radicals and indices of compounds of the general Formula X, R 5, R 6, R 7, R a, R b, q and r, wherein in case the compound of the general Formula is only present in the light-emitting layer or in the light-emitting layer and in the hole transporting layer and the group X is NR 1, at least one of the R 1 to R 7, R a or R b radicals in the compounds of Formula includes at least one heteroatom, excluding the following compounds: