Adduct of a compound of formula (I) wherein R 1 , R 2 , R 3 , R 4 are independently selected from the group consisting of: hydrogen, C 1 -C 3 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, aryl, C 1 -C 18 linear or branched alkyl-aryl, C 2 -C 18 linear or branched alkenyl-aryl, C 2 -C 18 linear or branched alkynyl-aryl, heteroaryl, and X is selected from the group consisting of: wherein R 5 and R 6 are independently selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, aryl, C 1 -C 22 linear or branched alkyl-aryl, C 2 -C 22 linear or branched alkenyl-aryl, C 2 -C 22 linear or branched alkynyl-aryl, heteroaryl, or R 5 or R 6 are each or both wherein m = 0, 1, 2 and n = 1 - 30 wherein if only one of R 5 or R 6 is wherein m = 0, 1, 2 and n = 1 - 30 then the other is selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl; or R 5 and/or R 6 are: wherein n= 0, 1, 2, 3 and R 7 , R 7 ', R 7 " are independently selected from the group consisting of: C 1 -C 4 alkyl; oxygen-alkyl C 1 -C 4 or R 5 and/or R 6 are: wherein n = 0, 1, 2, 3 and R 8 is selected from the group consisting of : C 1 -C 4 alkyl; or R 5 and/or R 6 are: wherein n is an integer from 1 to10; R 9 is selected from the group consisting of: hydrogen, alkyl, aryl, benzyl, amine, alkylamine, arylamine, benzylamine, aminoaryl; R 10 , R 11 , R 12 , R 13 e R 14 are independently selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, 1-(4-aminocyclohexyl)methylene; and a carbon allotrope containing carbon atoms hybridized sp 2 or a derivative thereof said carbon allotrope being selected from the group consisting of: carbon black, fullerene, single-wall or multiwall carbon nanotubes, graphene, graphite with a number of graphene layers from 2 to 10000. wherein R 1 , R 2 , R 3 , R 4 are independently selected from the group consisting of: hydrogen, C 1 -C 3 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, aryl, C 1 -C 18 linear or branched alkyl-aryl, C 2 -C 18 linear or branched alkenyl-aryl, C 2 -C 18 linear or branched alkynyl-aryl, heteroaryl, and X is selected from the group consisting of: wherein R 5 and R 6 are independently selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, aryl, C 1 -C 22 linear or branched alkyl-aryl, C 2 -C 22 linear or branched alkenyl-aryl, C 2 -C 22 linear or branched alkynyl-aryl, heteroaryl, or R 5 or R 6 are each or both wherein m = 0, 1, 2 and n = 1 - 30 wherein if only one of R 5 or R 6 is wherein m = 0, 1, 2 and n = 1 - 30 then the other is selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl; or R 5 and/or R 6 are: wherein n= 0, 1, 2, 3 and R 7 , R 7 ', R 7 " are independently selected from the group consisting of: C 1 -C 4 alkyl; oxygen-alkyl C 1 -C 4 or R 5 and/or R 6 are: wherein n = 0, 1, 2, 3 and R 8 is selected from the group consisting of : C 1 -C 4 alkyl; or R 5 and/or R 6 are: wherein n is an integer from 1 to10; R 9 is selected from the group consisting of: hydrogen, alkyl, aryl, benzyl, amine, alkylamine, arylamine, benzylamine, aminoaryl; R 10 , R 11 , R 12 , R 13 e R 14 are independently selected from the group consisting of: hydrogen, C 1 -C 18 alkyl, C 2 -C 18 linear or branched alkenyl or alkynyl, 1-(4-aminocyclohexyl)methylene; and a carbon allotrope containing carbon atoms hybridized sp 2 or a derivative thereof said carbon allotrope being selected from the group consisting of: carbon black, fullerene, single-wall or multiwall carbon nanotubes, graphene, graphite with a number of graphene layers from 2 to 10000. <EOS>