A borazine derivative having the formula: wherein the substituents R 4 to R 18 are the same or different from each other; wherein each of R 4 to R 18 is independently selected from the group consisting of: hydrogen; linear or branched saturated alkyl group; linear or branched unsaturated alkyl group; cycloalkyl group; aryl group; aralkyl group; heteroaryl group; acyl group; hydroxyl; alkoxy group; aryloxy group; acyloxy group; amino group; alkylamino group; arylamino group; acylamino group; cyano group; carboxyl group; thio group; aminocarbonyl group; carbamoyl group, arlyoxycarbonyl group, phenoxycarbonyl group, alkoxycarbonyl group and halogen; wherein R 4, R 8, R 9, R 13, R 14 and R 18 cannot simultaneously be selected to be hydrogen; wherein R 4 to R 8 and R 14 to R 18 cannot simultaneously be selected to be fluorine; wherein the substituents R 19 to R 27 are the same or different from each other; wherein each of R 19 to R 27 is independently selected from the group consisting of: hydrogen; linear or branched saturated alkyl group; linear or branched unsaturated alkyl group; cycloalkyl group; aryl group; aralkyl group; heteroaryl group; acyl group; hydroxyl; alkoxy group; aryloxy group; acyloxy group; amino group; alkylamino group; arylamino group; acylamino group; cyano group; carboxyl group; thio group; aminocarbobyl group; carbamoyl group, arlyoxycarbonykl group, phenoxycarbonyl group, alkoxycarbonyl group and halogen;and wherein at least one substituent, preferably all the substituents selected from the group of R 6, R 11 and R 16 are independently selected from the group consisting of linear or branched saturated alkyl groups, preferably with 1 to 6 carbon atoms, more preferably with 1 to 4 carbon atoms, even more preferably with 1 to 3 carbon atoms. wherein the substituents R 4 to R 18 are the same or different from each other; wherein each of R 4 to R 18 is independently selected from the group consisting of: hydrogen; linear or branched saturated alkyl group; linear or branched unsaturated alkyl group; cycloalkyl group; aryl group; aralkyl group; heteroaryl group; acyl group; hydroxyl; alkoxy group; aryloxy group; acyloxy group; amino group; alkylamino group; arylamino group; acylamino group; cyano group; carboxyl group; thio group; aminocarbonyl group; carbamoyl group, arlyoxycarbonyl group, phenoxycarbonyl group, alkoxycarbonyl group and halogen; wherein R 4, R 8, R 9, R 13, R 14 and R 18 cannot simultaneously be selected to be hydrogen; wherein R 4 to R 8 and R 14 to R 18 cannot simultaneously be selected to be fluorine; wherein the substituents R 19 to R 27 are the same or different from each other; wherein each of R 19 to R 27 is independently selected from the group consisting of: hydrogen; linear or branched saturated alkyl group; linear or branched unsaturated alkyl group; cycloalkyl group; aryl group; aralkyl group; heteroaryl group; acyl group; hydroxyl; alkoxy group; aryloxy group; acyloxy group; amino group; alkylamino group; arylamino group; acylamino group; cyano group; carboxyl group; thio group; aminocarbobyl group; carbamoyl group, arlyoxycarbonykl group, phenoxycarbonyl group, alkoxycarbonyl group and halogen;and wherein at least one substituent, preferably all the substituents selected from the group of R 6, R 11 and R 16 are independently selected from the group consisting of linear or branched saturated alkyl groups, preferably with 1 to 6 carbon atoms, more preferably with 1 to 4 carbon atoms, even more preferably with 1 to 3 carbon atoms.