Fluorinated dyes or colorants and their uses

An electrophoretic dispersion comprising charged pigment particles dispersed in a fluorinated solvent, wherein said fluorinated solvent comprises a fluorinated perylene dye or colorant expressed by the following Formula (IV):

• wherein:
• m, n, p and q are independently 0-2;
• X is O, S or NR wherein R is hydrogen, alkyl, heteroalkyl, aryl, heteroaryl or a halogenated derivative of alkyl, heteroalkyl, aryl, heteroaryl or Rf-A- in which Rf and A are defined below;
• R1s are independently hydrogen, alkyl, heteroalkyl, aryl, heteroaryl or a halogenated derivative of alkyl, heteroalkyl, aryl or heteroaryl;
• or R1 is Rf-A- wherein Rf and A are defined below;
• R2s are independently hydrogen, halogen, alkyl, heteroalkyl, aryl, heteroaryl or a halogenated derivative of alkyl, heteroalkyl, aryl or heteroaryl, R′O—, R′S—, R′R″N—, R′C(O)—, R′OC(O)—, R′C(O)—, R′C(O)NR″—, R′R″NC(O)—, R′NHC(O)NR″—, R′SO2NR″— or R′R″NSO2— in which R′ and R″ are independently hydrogen, alkyl, heteroalkyl, aryl, heteroaryl or a halogenated derivative of alkyl, heteroalkyl, aryl or heteraryl;
• or
• R2s are independently Rf-A- wherein Rf and A are defined below;
• Rf is a fluorinated alkyl, fluorinated heteroalkyl, fluorinated aryl or fluorinated heteroaryl or a low/medium molecular weight fluorinated polymeric or oligomeric moiety;
• and
• A is absent or a linking chain comprising one or more of the following, connected together:
• —O—, —S—, —SO—, —SO2, —SO2NR′—, —NR′—, —NR′CO—, —NR′COO—, —NR′CONR″—, —NR′CS—, —NR′CSO—, —NR′CSNR″—, —OC(O)—, —OC2—, —C(O)O—, —OC(O)N′R—, alkylene, arylene, and a halogenated derivative of alkylene or arylene, wherein R′ and R″ are as defined above, wherein the fluorinated perylene dye or colorant comprises at least about 25% by weight of fluorine.