Compound and its use in organic electronic devices

Compound of the general formula I

• A1-M-(T1)a-(T2)b-(T3)c-A2 (I)
• with the parameters a, b, c in each case independently of one another 0, 1 or 2, with the proviso that at least one of the parameters a, b, c=1 or 2,
• with group M selected from the group consisting of:
• wherein * denotes the link to the groups T1, T2, T3, A1 and A2, wherein H atoms of Formulas 1 to 4 may be substituted by alkyl, O-alkyl, S-alkyl or halogen;
• with the groups T1, T2 and T3 independently selected from the group consisting of:
• wherein H atoms of Formulas 1 to 4 may be substituted by alkyl, O-alkyl, S-alkyl or halogen,
• with R1 to R4 each independently selected from the group consisting of H, alkyl, alkenyl, aryl and heteroaryl;
• with X1 to X16, selected independently from N or CR6, with the proviso that, in the Formulas 7, 12 and 14, a group of X6 to X9 is denoted by the link * to a further group in the compound of the general Formula I,
• with Q selected from the group consisting of O, S, and NR7,
• with W1 to W8 each independently selected from N and CR8,
• wherein R6, R7 and R8 are each independently selected from the group consisting of H, CN, alkyl, alkenyl, O-alkyl, S-alkyl, aryl, and heteroaryl;
• wherein the electron-attracting groups A1 and A2 are, independently of one another, electron-attracting groups having at least one C═C double bond, and wherein * denotes the link to a further group M, T1, T2, T3 and A2 in the compound of the general formula I.