Compound of formula (I): ** Formula ** in which: - i is an integer selected from 0, 1, 2, 3 or 4； - j is an integer selected from 0, 1, 2 or 3； - k is an integer selected from 0 or 1； - each Ri located in any available position of ring A is identical or different and is selected from halogen, alkyl, aryl, -alkylaryl, OR, NRR ', CN, CF3, COR, COOR, CONRR'； - each Rj located in any available position of ring C is identical or different and is selected from halogen, alkyl, aryl, -alkylaryl, OR, NRR ', CN, COR, COOR, CONRR'； - Rk is independently selected from halogen； - X is selected from H, alkyl, aryl, -alkylaryl, wherein said alkyl and / or aryl are optionally substituted by halogen, alkyl, CN, CF3, OR, NRR ', COR, COOR, CONRR'； - And is selected from: - (CHT ') pNRaRb in which · Ra and Rb, identical or different, are independently selected from H, alkyl, aryl or arylalkyl, wherein said aryl is optionally substituted by halogen, alkyl , CN, CF3,>； = O, OR, NRR ', COR, COOR, CONRR'； * or Ra and Rb together with the N atom to which an N is attached comprising a heterocycle of 5 to 7 links that may comprise one or two heteroatoms more selected from N, O or S, said heterocycle being optionally substituted by one or more of halogen； >； = O； I rent； -alkylaryl or aryl wherein said aryl is optionally substituted by halogen； CN； CF3； OR； NRR '； COR； COOR； CONRR '； · P is an integer selected from 0 to 6； - each T ', identical or different, is independently selected from H or alkyl； ** Formula **Compuesto de fórmula (I):**Fórmula** en la que: - i es un número entero seleccionado de entre 0, 1, 2, 3 o 4； - j es un número entero seleccionado de entre 0, 1, 2 o 3； - k es un número entero seleccionado de entre 0 o 1； - cada Ri situado en cualquier posición disponible del anillo A es idéntico o diferente y se selecciona 15 de entre halógeno, alquilo, arilo, -alquilarilo, OR, NRR', CN, CF3, COR, COOR, CONRR'； - cada Rj situado en cualquier posición disponible del anillo C es id
