Abstract: A compound of Formula (I) D-S1-A-S2—B1,??Formula (I) wherein: A represents a conjugated chain of from 1 to 20 aromatic moieties independently selected from the group consisting of aromatic moieties, heteroaromatic moieties and E moieties, provided that A includes at least one E moiety, wherein E is selected from the group consisting of: E1 being a dibenzo[d,b]silole moiety of the structure: E2 being a moiety of the structure: and E3 being a moiety of the structure: wherein E is connected in the conjugated chain of A and optionally to S1 or to S2 through covalent bonds at Y and Z; wherein each R is independently selected from the group consisting of straight chain or branched C1-C20 alkyl and C2-C20 alkenyl, optionally wherein from 1 to 5 CH2 groups are each replaced by an oxygen, provided that no acetal, ketal, peroxide or vinyl ether is present in the R group, and optionally wherein each H bonded to a C in each R group may independently be replaced by a halogen; wherein the

Abstract: A compound of the formula, plus devices incorporating this compound, and a method of marking such devices: wherein: A represents a phenyl group, a naphthyl group, a biphenyl group or two phenyl groups linked by a C1-C8 alkyl chain; B1 and B2 in each occurrence are independently selected side chains of the structure —(Y1)n-L-(Y2)m—X wherein: Y1 and Y2 in each occurrence are independently selected from O, CO2— and CH2O, m and n in each occurrence are independently selected from 0 or 1; L in each occurrence is a C2-C14 straight chain alkyl group; and X in each occurrence is an independently selected cross linkable group; C is a side chain of the structure —(Z1)p-M-(Z2)q-E wherein: Z1 and Z2 are independently selected from O, CO2— and CH2O, p and q in each occurrence are independently selected from 0 or 1; M is a C1-C14 straight chain alkyl group; and E comprises a charge transport group; D is a side chain of the structure —(W1)r—N—(W2)s—F wherein: W1 and W2 are independently selected from O, CO2— and

Abstract: Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.

Abstract: A compound of Formula (I) D-S1-A-S2—B1,??Formula (I) wherein: A represents a conjugated chain of from 1 to 20 aromatic moieties independently selected from the group consisting of aromatic moieties, heteroaromatic moieties and E moieties, provided that A includes at least one E moiety, wherein E is selected from the group consisting of: E1 being a dibenzo[d,b]silole moiety of the structure: E2 being a moiety of the structure: and E3 being a moiety of the structure: wherein E is connected in the conjugated chain of A and optionally to S1 or to S2 through covalent bonds at Y and Z; wherein each R is independently selected from the group consisting of straight chain or branched C1-C20 alkyl and C2-C20 alkenyl, optionally wherein from 1 to 5 CH2 groups are each replaced by an oxygen, provided that no acetal, ketal, peroxide or vinyl ether is present in the R group, and optionally wherein each H bonded to a C in each R group may independently be replaced by a halogen; wherein the

Abstract: A compound of the formula, plus devices incorporating this compound, and a method of marking such devices: wherein: A represents a phenyl group, a naphthyl group, a biphenyl group or two phenyl groups linked by a C1-C8 alkyl chain; B1 and B2 in each occurrence are independently selected side chains of the structure —(Y1)n-L-(Y2)m—X wherein: Y1 and Y2 in each occurrence are independently selected from O, CO2— and CH2O, m and n in each occurrence are independently selected from 0 or 1; L in each occurrence is a C2-C14 straight chain alkyl group; and X in each occurrence is an independently selected cross linkable group; C is a side chain of the structure —(Z1)p-M-(Z2)q-E wherein: Z1 and Z2 are independently selected from O, CO2— and CH2O, p and q in each occurrence are independently selected from 0 or 1; M is a C1-C14 straight chain alkyl group; and E comprises a charge transport group; D is a side chain of the structure —(W1)r—N—(W2)s—F wherein: W1 and W2 are independently selected from O, CO

Abstract: Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.

Abstract: Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.

Abstract: Compounds of the formula D-S1-A-S2—B1 wherein A comprises a 2,7-disubstituted 9,9-fluoroalkyl fluorene diradical of the formula wherein S1, S2, D and B1 have meanings given in the description that are useful as charge transport and emissive materials for the fabrication of electronic devices such as diodes, transistors, and photovoltaic devices.