Charge transporting semi-conducting material and semi-conducting device

A charge transporting semi-conducting material comprising:

• a cross-linked charge-transporting polymer comprising 1,2,3-triazole cross-linking units of the general formulae Ia and/or Ib,
• wherein
• aa) Pol1-Pol4 are independently selected from charge-transporting polymers,
• bb) X1, X2, X3, and X4 are independently selected from spacer units having up to 30 multivalent atoms or represent direct bonding of Pol1-Pol4 to the 1,2,3-triazole ring, and
• cc) R and R′ are independently selected from the group consisting of
• H, halogen, nitrile, C1-C22 saturated or unsaturated alkyl, C3-C22 cycloalkyl, C6-C18 aryl, C7-C22 arylalkyl,
• C2-C13 heteroaryl having up to three heteroatoms independently selected from oxygen, nitrogen, or sulphur,
• SiR1R2R3, wherein R1, R2, and R3 are independently selected from C1-C4 alkyl or phenyl, COR4 or COOR5, wherein R4 and R5 are independently selected from C1-C22 alkyl or C7-C22 arylalkyl, and
• CR6R7OR8, wherein R6 and R7 are independently selected from H, C1-C6 alkyl, C6-C9 aryl, or R6 and R7 together form a C3-C7 ring, and R8 is C1-C6 alkyl, C7-C22 arylalkyl, SiR9R10R11, wherein R9, R10, and R11 are independently selected from C1-C4 alkyl or phenyl, or COR12, wherein R12 is H or C1-C21 alkyl;
• and
• wherein
• (i) the cross-linked charge-transporting polymer is a continuous infinite network,
• (ii) the charge-transporting polymer is capable of transporting an injected charge due to a system of overlapping orbitals along the charge-transporting polymer, and
• (iii) the injected charge is an electron injected or withdrawn either by an electrode arranged in contact with the charge-transporting polymer and/or through a reaction with a dopant capable of increasing the conductivity of the charge-transporting polymer.