Aromatic compounds and use thereof for formation of molecular layers and fabrication of switching elements for memristive devices

A compound of formula I

• R1-(A1-Z1)r—B1—ZL-A2-(Z3-A3)s-G (I)
• in which
• R1 denotes H, straight chain or branched alkyl or alkoxy radical having up to 20 C atoms, where one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C═C—, —CH═CH—,
• —CF2O—, —OCF2—, —CO—O—, —O—CO—, —SiR0R00—, —NH—, —NR0—, or —SO2— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each be replaced by halogen, CN, SCN or SF5, or alternatively, R1 denotes a group Dia-ZD,
• Dia denotes a diamondoid radical,
• ZD has one of the meanings of Z1 and Z3 or denotes a straight chain or branched spacer group,
• Z1, Z3 on each occurrence, identically or differently, denote a single bond, —CF2O—, —OCF2—, —CF2S—, —SCF2—, —CH2O—, —OCH2—, —C(O)O—, —OC(O)—, —C(O)S—, —SC(O)—, —(CH2)n1—, —(CF2)n2—, —CF2—CH2—, —CH2—CF2—, —CH═CH—, —CF═CF—, —CF═CH—, —CH═CF—, —(CH2)n3O—, —O(CH2)n4—, —C═C—, —O—, —S—, —CH═N—, —N═CH—, —N═N—, —N═N(O)—, —N(O)═N—, or —N═C—C═N—,
• n1, n2, n3, n4 identically or differently, are 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10,
• ZL denotes-O—, —S—, —CH2—, —C(O)—, —CF2—, —CHF—, —C(R)2—, —S(O)—, or —SO2—,
• R0, R00, identically or differently, denote an alkyl or alkoxy radical having 1 to 15 C atoms, in which one or more H atoms may each be replaced by halogen,
• A1, A3 on each occurrence, identically or differently, denote an aromatic, heteroaromatic, alicyclic or heteroaliphatic ring having 4 to 25 ring atoms, which may also contain condensed rings and which may be mono- or polysubstituted by Y,
• A2 denotes an aromatic or heteroaromatic ring having 5 to 25 ring atoms, which may also contain condensed rings and which may be mono- or polysubstituted by Y,
• Y on each occurrence, identically or differently, denotes F, Cl, CN, SCN, SF5 or straight-chain or branched, in each case optionally fluorinated alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having up to 12 C atoms, or cycloalkyl having 3 to 12 C atoms, or alkylcycloalkyl having 4 to 12 C atoms,
• B1 denotes
• where the groups may be oriented in both directions,
• L1 to L5, independently of one another, denote F, Cl, Br, I, CN, SF5, CF3 or OCF3, where L3 alternatively denotes H,
• G denotes —OP(O)(OH)2, —PO(OH)2, or —C(OH)(PO(OH)2)2,
• Rx denotes straight-chain alkyl having 1 to 6 C atoms or branched alkyl having 3 to 6 C atoms, and
• r is 0, 1 or 2, and
• S is 0, 1 or 2,
• where r+s≤4.