Compound corresponding to the general formula: wherein: L is selected from a substituted or unsubstituted alkanediyl radical, -(CR a R b) p -X-(CR a R b) q - or a substituted or unsubstituted arylene or heteroarylene directly branched with the triazole groups; R 1, R 3, R 4 and R 6 are independently selected from H, Br, Cl, I and F; R 2 and R 5 are independently selected from H or a substituted or unsubstituted alkyl; X is selected from O, NR', S or S=O; R', R a and R b are independently H or (C 1 -C 6)alkyl; n and m are independently 0, 1, 2, 3 or 4; p and q are independently 1, 2 or 3; wherein alkyl represents a monovalent radical of a linear or branched hydrocarbon chain comprising 1 to 18 carbon atoms; alkanediyl represents a divalent radical of a linear or branched hydrocarbon chain comprising 1 to 18 carbon atoms; arylene represents a divalent radical of an aromatic hydrocarbon comprising 6 to 18 carbon atoms; heteroarylene represents a divalent radical of a monocyclic or bicyclic 5 to 10 membered aromatic group comprising from 1 to 3 heteroatoms independently selected from oxygen, nitrogen and sulphur, wherein the C 5 -C 10 heteroaryl group is selected from the group consisting of furyl, thienyl, pyrrolyl, pyrazoyl, imidazolyl, isoxazolyl, isothiazoyl, thiazolyl, oxazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1-benzofuryl, 1-benzothienyl, indolyl, benzimidazolyl, indazolyl, 1,2-benzisoxazolyl, 2,1-benzisoxazolyl, 1,2-benzisothiazolyl, 2,1-benzisothiazolyl, benzothiazolyl, benzoxazolyl, benzotriazolyl, pyridyl, pyridinium, quinolinyl, isoquinolinyl, pyridazinyl, cinnolinyl, phthalazinyl, pyrimidinyl, quinazolinyl, pyrazinyl and quinoxalinyl; substituted means substituted by one or more substituents selected from the group consisting of halogen, alkyl, alkoxy, aryl, heteroaryl, haloalkyl, haloalkoxy, alkoxycarbonyl, alkanoyl, aroyl, formyl, nitrile, nitro, amido, alkylthio, alkylsulfinyl, alkylsulfonyl, arylthio, arylsulfinyl, arylsulfonyl, amino, alkylamino, arylamino, dialkylamino and diarylamino; and salts thereof; with the proviso that said compound is not L is selected from a substituted or unsubstituted alkanediyl radical, -(CR a R b) p -X-(CR a R b) q - or a substituted or unsubstituted arylene or heteroarylene directly branched with the triazole groups; R 1, R 3, R 4 and R 6 are independently selected from H, Br, Cl, I and F; R 2 and R 5 are independently selected from H or a substituted or unsubstituted alkyl; X is selected from O, NR', S or S=O; R', R a and R b are independently H or (C 1 -C 6)alkyl; n and m are independently 0, 1, 2, 3 or 4; p and q are independently 1, 2 or 3; wherein alkyl represents a monovalent radical of a linear or branched hydrocarbon chain comprising 1 to 18 carbon atoms; alkanediyl represents a divalent radical of a linear or branched hydrocarbon chain comprising 1 to 18 carbon atoms; arylene represents a divalent radical of an aromatic hydrocarbon comprising 6 to 18 carbon atoms; heteroarylene represents a divalent radical of a monocyclic or bicyclic 5 to 10 membered aromatic group comprising from 1 to 3 heteroatoms independently selected from oxygen, nitrogen and sulphur, wherein the C 5 -C 10 heteroaryl group is selected from the group consisting of furyl, thienyl, pyrrolyl, pyrazoyl, imidazolyl, isoxazolyl, isothiazoyl, thiazolyl, oxazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1-benzofuryl, 1-benzothienyl, indolyl, benzimidazolyl, indazolyl, 1,2-benzisoxazolyl, 2,1-benzisoxazolyl, 1,2-benzisothiazolyl, 2,1-benzisothiazolyl, benzothiazolyl, benzoxazolyl, benzotriazolyl, pyridyl, pyridinium, quinolinyl, isoquinolinyl, pyridazinyl, cinnolinyl, phthalazinyl, pyrimidinyl, quinazolinyl, pyrazinyl and quinoxalinyl; substituted means substituted by one or more substituents selected from the group consisting of halogen, alkyl, alkoxy, aryl, heteroaryl, haloalkyl, haloalkoxy, alkoxycarbonyl, alkanoyl, aroyl, formyl, nitrile, nitro, amido, alkylthio, alkylsulfinyl, alkylsulfonyl, arylthio, arylsulfinyl, arylsulfonyl, amino, alkylamino, arylamino, dialkylamino and diarylamino; and salts thereof; with the proviso that said compound is not