Use of a compound of formula I with a skeleton of formula II: and R1, selected from the group comprising: R1-i) substituents selected from the group comprising: hydrogen, halide, cyanide, azide, hydrazides, amine, carboxy-, hydroxy-, thiol-, carbonyl-, sulfonyl-, sulfonate-, nitro-, silyl-, selenyl-, phosphynil-, phosphonyl-, phosphoryl-groups, which may be etherified, esterified ou alkylated; R1-ii) Hydrocarbon compounds selected from the group comprising: alkyls, alkenyls, alkynyls, alkoxy, carboalkoxy, including cyclic hydrocarbon compounds, aryls, where all the above mentioned hydrocarbon compounds may contain at least one heteroatom, optionally the above mentioned compounds are substituted with compounds selected from the group comprising alkylene, alkenylene, alkynylene, including the corresponding cyclic hydrocarbon compounds, aryls, heteroaryls and substituents according to R1i), R1-iii) any combination of 2,3,4,5,6,7,8,9,10 or more compounds of the aforementioned hydrocarbon compounds R1-ii); R2, independently from one another, selected from the group comprising: R1-i), R1-ii) and R1-iii); R3, independently from one another, selected from the group comprising: alkenyl, cycloalkenyl, aryl optionally comprising at least one heteroatom, where at least one multiple bond is in conjugation with the skeleton and the alkenyl, cycloalkenyl, aryl is optionally substituted with a compound selected from the group comprising R1-i) to R1-iii); R4, selected from the group comprising: R1-i), R1-ii) and R1-iii); for generating a luminescence with at least three emission bands characterized in that a compound of the formula III is used with R5 and/or R6 independently from one another being selected from the group comprising: R1-i), R1-ii) and R1-iii) and n and I independently from one another is 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 and m 1, 2, 3, 4 or 5. R1, selected from the group comprising: R1-i) substituents selected from the group comprising: hydrogen, halide, cyanide, azide, hydrazides, amine, carboxy-, hydroxy-, thiol-, carbonyl-, sulfonyl-, sulfonate-, nitro-, silyl-, selenyl-, phosphynil-, phosphonyl-, phosphoryl-groups, which may be etherified, esterified ou alkylated; R1-ii) Hydrocarbon compounds selected from the group comprising: alkyls, alkenyls, alkynyls, alkoxy, carboalkoxy, including cyclic hydrocarbon compounds, aryls, where all the above mentioned hydrocarbon compounds may contain at least one heteroatom, optionally the above mentioned compounds are substituted with compounds selected from the group comprising alkylene, alkenylene, alkynylene, including the corresponding cyclic hydrocarbon compounds, aryls, heteroaryls and substituents according to R1i), R1-iii) any combination of 2,3,4,5,6,7,8,9,10 or more compounds of the aforementioned hydrocarbon compounds R1-ii); R1-i) substituents selected from the group comprising: hydrogen, halide, cyanide, azide, hydrazides, amine, carboxy-, hydroxy-, thiol-, carbonyl-, sulfonyl-, sulfonate-, nitro-, silyl-, selenyl-, phosphynil-, phosphonyl-, phosphoryl-groups, which may be etherified, esterified ou alkylated; R1-ii) Hydrocarbon compounds selected from the group comprising: alkyls, alkenyls, alkynyls, alkoxy, carboalkoxy, including cyclic hydrocarbon compounds, aryls, where all the above mentioned hydrocarbon compounds may contain at least one heteroatom, optionally the above mentioned compounds are substituted with compounds selected from the group comprising alkylene, alkenylene, alkynylene, including the corresponding cyclic hydrocarbon compounds, aryls, heteroaryls and substituents according to R1i), R1-iii) any combination of 2,3,4,5,6,7,8,9,10 or more compounds of the aforementioned hydrocarbon compounds R1-ii); R2, independently from one another, selected from the group comprising: R1-i), R1-ii) and R1-iii); R3, independently from one another, selected from the group comprising: alkenyl, cycloalkenyl, aryl optionally comprising at least one heteroatom, where at least one multiple bond is in conjugation with the skeleton and the alkenyl, cycloalkenyl, aryl is optionally substituted with a compound selected from the group comprising R1-i) to R1-iii); R4, selected from the group comprising: R1-i), R1-ii) and R1-iii); for generating a luminescence with at least three emission bands characterized in that a compound of the formula III is used