# US 2021/0280791 A1 · Organic semiconducting polymers

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- Number: US 2021/0280791 A1
- Document ID: US20210280791A1
- Status: Published application
- Kind: A1
- Application number: 17/050,754
- Filed: 2019-04-24
- Published: 2021-09-09
- Earliest claimed: 2018-04-27
- Assignees: Raynergy Tek Incorporation
- Applicants: Raynergy Tek Incorporation
- Inventors: NICOLAS BLOUIN; ANGNIESZKA PRON; WILLIAM MITCHELL; JONATHAN SNOW; IGNASI BURGUES; QUENTIN HUAULME
- Web page: https://patentgrep.com/patent/US20210280791A1

## CPC

- C07D 495/04: Ortho-condensed systems
- C07D 495/14: Ortho-condensed systems
- C07D 495/22: in which the condensed system contains four or more hetero rings
- C08G 61/126: {with a five-membered ring containing one sulfur atom in the ring}
- H10K 85/113: {Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene}
- H10K 85/151: {Copolymers}
- H10K 85/211: {Fullerenes, e.g. C60}
- H10K 85/215: {comprising substituents, e.g. PCBM}
- C08G 2261/124: alternating
- C08G 2261/1412: Saturated aliphatic units
- C08G 2261/143: Side-chains containing nitrogen
- C08G 2261/148: Side-chains having aromatic units
- C08G 2261/18: conjugated
- C08G 2261/228: Polymers, i.e. more than 10 repeat units
- C08G 2261/3223: containing one or more sulfur atoms as the only heteroatom, e.g. thiophene
- C08G 2261/3243: containing one or more sulfur atoms as the only heteroatom, e.g. benzothiophene
- C08G 2261/3325: derived from other polycyclic systems
- C08G 2261/344: containing heteroatoms
- C08G 2261/414: Stille reactions
- C08G 2261/51: Charge transport
- C08G 2261/91: Photovoltaic applications
- C08G 2261/94: Applications in sensors, e.g. biosensors
- C08G 2261/95: Use in organic luminescent diodes
- C08L 2205/02: containing two or more polymers of the same C08L -group
- H10K 10/488: {the channel region comprising a layer of composite material having interpenetrating or embedded materials, e.g. a mixture of donor and acceptor moieties, that form a bulk heterojunction}
- H10K 30/30: comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
- Y02E 10/549: Organic PV cells
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The invention relates to novel organic semiconducting (OSC) polymers containing a polycyclic acceptor-donor-acceptor (A-D-A) type repeating unit, to methods for their preparation and educts or intermediates used therein, to compositions and formulations containing them, to the use of the polymers and compositions as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, perovskite-based solar cell (PSC) devices, organic photo-detectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these polymers or compositions.

## Claims

### Claim 1

A polymer comprising one or more repeating units of formula I
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings,
each pair of U1 and U2 is attached to two directly adjacent C atoms in a ring Ar1, Ar2 or Ar3 respectively, and in each of said pairs of U1 and U2 one of U1 and U2 is a single bond and the other is CR1R2, SiR1R2, GeR1R2, C═CR1R2, C═O or NR1, so that each pair of U1 and U2 is forming a five-membered unsaturated ring together with the C atoms to which they are attached,
RT1, RT2 a group of formula T
Z1, Z2 C═O, C═CX1X2, SO2,
X1, X2 CN, C(═O)Ra,
Ar1, Ar2, Ar3 arylene or heteroarylene which has from 5 to 20 ring atoms, is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
Ar4, Ar5 —CY1═CY2—, —C≡C—, or arylene or heteroarylene which has from 5 to 20 ring atoms, is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
Ar6 arylene or heteroarylene which has from 5 to 20 ring atoms, is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
Y1, Y2H, F, Cl or CN,
R1, R2H, F, Cl, CN, or straight-chain, branched or cyclic alkyl with 1 to 30, preferably 1 to 20, C atoms, in which one or more CH2 groups are each optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —C(═O)—O—, —O—C(═O)—, —NR0—, —SiR0R00—, —CF2—, —CR0═CR00—, —CY1═CY2— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and in which one or more H atoms are each optionally replaced by F, Cl, Br, I or CN, and in which one or more CH2 or CH3 groups are each optionally replaced by a cationic or anionic group, or aryl, heteroaryl, arylalkyl, heteroarylalkyl, aryloxy or heteroaryloxy, wherein each of the aforementioned cyclic groups has 5 to 20 ring atoms, is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
and the pair of R1 and R2, together with the C, Si or Ge atom to which they are attached, may also form a spiro group with 5 to 20 ring atoms which is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
Ra R0 or aryl or heteroaryl, each having from 4 to 30 ring atoms, optionally containing fused rings and being unsubstituted or substituted with one or more groups L,
L F, Cl, —NO2, —CN, —NC, —NCO, —NCS, —OCN, —SCN, R0, OR0, SR0, —C(═O)X0, —C(═O)R0, —C(═O)—OR0, —O—C(═O)—R0, —NH2, —NHR0, —NR0R00, —C(═O)NHR0, —C(═O)NR0R00, —SO3R0, —SO2R0, —OH, —CF3, —SF5, or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30, preferably 1 to 20 C atoms that is optionally substituted and optionally comprises one or more hetero atoms, preferably F, —CN, R0, —OR0, —SR0, —C(═O)—R0, —C(═O)—OR0, —O—C(═O)—R0, —O—C(═O)—OR0, —C(═O)—NHR0, or —C(═O)—NR0R00,
L′ H or one of the meanings given for L,
R0, R00H or straight-chain or branched alkyl with 1 to 20, preferably 1 to 12, C atoms that is optionally fluorinated,
X0 halogen, preferably F or Cl,
a 0, 1, 2 or 3,
b, c 0, 1, 2 or 3,
characterized in that, if a>0, Ar1 contains at least one thiophene ring.

### Claim 2 (depends on 1)

The polymer according to claim 1, characterized in that the repeating units of formula I are selected from the following subformulae
wherein Ar1, Ar2, Ar3, Ar4, RT1, RT2, b and c have the meanings given in claim 1, and U1 and U2 have one of the meanings given in claim 1 which is different from a single bond.

### Claim 3 (depends on 1)

The polymer according to claim 1, characterized in that the groups Ar1 are on each occurrence identically or differently selected from the following formulae and their mirror images
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
W1, W2 S, O, Se or C═O,
R5-8 H, F, Cl, CN, or straight-chain, branched or cyclic alkyl with 1 to 30, preferably 1 to 20, C atoms, in which one or more CH2 groups are each optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —C(═O)—O—, —O—C(═O)—, —NR0—, —SiR0R00—, —CF2—, —CR0═CR00—, —CY1═CY2— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and in which one or more H atoms are each optionally replaced by F, Cl, Br, I or CN, and in which one or more CH2 or CH3 groups are each optionally replaced by a cationic or anionic group, or aryl, heteroaryl, arylalkyl, heteroarylalkyl, aryloxy or heteroaryloxy, wherein each of the aforementioned cyclic groups has 5 to 20 ring atoms, is mono- or polycyclic, optionally contains fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
Y1, Y2, R0, R00 one of the meanings given in claim 1.

### Claim 4 (depends on 3)

The polymer according to claim 3, characterized in that the groups Ar2 are on each occurrence identically or differently selected from the following formulae and their mirror images
wherein, independently of each other and on each occurrence identically or differently, W1, W2 and R5-8 have the meanings given in claim 3, V1 is CR3 or N, W3 has one of the meanings given for W1, and R3 and R9 have one of the meanings given for R5.

### Claim 5 (depends on 4)

The polymer according to claim 4, characterized in that the groups Ar2 are on each occurrence identically or differently selected from the following formulae and their mirror images
wherein R3-7 have the meanings given in claim 4.

### Claim 6 (depends on 4)

The polymer according to claim 4, characterized in that the groups Ar3 are on each occurrence identically or differently selected from the following formulae and their mirror images
wherein V1, W1, W2, W3 and R5-9 have the meanings given in claim 4.

### Claim 7 (depends on 4)

The polymer according to 4, characterized in that the groups Ar3 are on each occurrence identically or differently selected from the following formulae and their mirror images
wherein R3-7 have the meanings given in claim 4.

### Claim 8 (depends on 4)

The polymer according to claim 4, characterized in that the groups Ar4 and Ar5 are independently of each other, and on each occurrence identically or differently, selected from the following formulae and their mirror images
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
V2 CR4 or N,
W4 S, O, Se, NR0 or C═O,
R4 one of the meanings given for R3 above and below,
and V1, W1, W2, R0, R5-8 are as defined in claim 4.

### Claim 9 (depends on 1)

The polymer according to claim 1, characterized in that the groups Ar4 and Ar5 are independently of each other, and on each occurrence identically or differently, selected from the following formulae and their mirror images
wherein X1, X2, X3 and X4 have one of the meanings given for R1 in claim 1.

### Claim 10 (depends on 1)

The polymer according to claim 1, characterized in that RT1 and RT2 are independently of each other selected from the following formulae
wherein Ra, L and L′ have the meanings given in claim 1, t is 0 or 1, and u is 0, 1 or 2.

### Claim 11 (depends on 1, 3)

The polymer according to claim 3, characterized in that the repeating units of formula I are selected of formula IA
wherein Ar4, Ar5, RT1, RT2, b and c, independently of each other and on each occurrence identically or differently, have the meanings given in claim 1, and “Core” is, on each occurrence identically or differently, a polycyclic divalent group selected from the following formulae
wherein R1-6 have the meanings given in claims 1 and 3.

### Claim 12 (depends on 1, 3)

The polymer according to claim 3, characterized in that the repeating units of formula I are selected from the following subformulae
wherein R1-6 have the meanings given in claims 1 and 3.

### Claim 13 (depends on 1)

The polymer according to claim 1, characterized in that R1 and R2 are selected from F, Cl, CN, straight-chain or branched alkyl, alkoxy, sulfanylalkyl, sulfonylalkyl, alkylcarbonyl, alkoxycarbonyl and alkylcarbonyloxy, each having 1 to 20 C atoms and being unsubstituted or substituted by one or more F atoms.

### Claim 14 (depends on 1)

The polymer according to claim 1, characterized in that R1 and R2 are selected from mono- or polycyclic aryl or heteroaryl, each of which is optionally substituted with one or more groups L as defined in formula I and has 5 to 20 ring atoms, and wherein two or more rings may be fused to each other or connected with each other by a covalent bond.

### Claim 15 (depends on 1)

The polymer according to claim 1, characterized in that R5-9, when being different from H, are each independently selected from F, Cl, CN, or from straight-chain or branched alkyl, alkoxy, sulfanylalkyl, sulfonylalkyl, alkylcarbonyl, alkoxycarbonyl and alkylcarbonyloxy, each of which has 1 to 20 C atoms and is unsubstituted or substituted by one or more F atoms, or from mono- or polycyclic aryl or heteroaryl, each of which is optionally substituted with one or more groups L as defined in formula I and has 5 to 20 ring atoms, and wherein two or more rings may be fused to each other or connected with each other by a covalent bond.

### Claim 16 (depends on 1)

The polymer according to claim 1, characterized in that it comprises one or more units of formula I or its subformulae as defined in claim 1, and one or more units selected from the following groups
A1) the group consisting of arylene or heteroarylene units that are different from formula I and its subformulae, have from 5 to 20 ring atoms, are mono- or polycyclic, do optionally contain fused rings, and are unsubstituted or substituted by one or more identical or different groups L as defined in formula I,
B1) —CY1═CY2— wherein Y1 and Y2 are independently of each other H, F, Cl or CN,
C1) —C≡C—,
D1) the group consisting of straight-chain, branched or cyclic alkylene with 1 to 30, preferably 2 to 16, C atoms, in which one or more CH2 groups are each optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —C(═O)—O—, —O—C(═O)—, —NR0—, —SiR0R00—, —CF2—, —CR0═CR00—, —CY1═CY2— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and in which one or more H atoms are each optionally replaced by F, Cl, Br, I or CN, but excluding fully conjugated unsaturated groups (like e.g. —CR0═CR00—CR0═CR00— or —C≡C—),
E1) the group consisting of units formed from one or more units selected from groups A1, B1 and 01 and one or more units of group D1.

### Claim 17 (depends on 1, 16)

The polymer according to claim 16, characterized in that it comprises one or more repeating units of formula II1 and/or II2, and optionally one or more repeating units of formula II3:
—(C1)a—U—(C2)b—(C3)c—(C4)d— II1
—(C1)a—(C2)b—U—(C3)c—(C4)d— II2
—(C1)a—(C2)b—(C3)c—(C4)d— II3
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
U a unit selected from formula I or its subformulae as defined in claim 1,
C1-4 a unit selected from groups A1, B1, C1, D1 and E1 as defined in claim 16,
a, b, c, d 0 or 1, wherein in formula II3 a+b+c+d≥1.

### Claim 18 (depends on 17)

The polymer according to claim 17, characterized in that it comprises one or more repeating units selected from the group consisting of the following formulae and their mirror images
—(U)— U1
—(U-Sp)- U2
-(Sp-U-Sp)- U3
—(U-D)- U4
—(U-A)- U5
-(D-Sp)- U6
-(A-Sp)- U7
-(A-D)- U8
-(D)- U9
-(Sp-D-Sp)- U10
-(A)- U11
-(Sp-A-Sp)- U12
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
U the meaning given in claim 17,
D a unit of group A1 as defined in claim 17 which is a donor unit,
A a unit of group A1 as defined in claim 17 which is an acceptor unit,
Sp a spacer unit which is located between two units selected from the group consisting of U, D and A, and is selected from groups A1, B1, C1, D1 and E1 as defined in claim 17,
and the polymer comprises at least one unit selected from formulae U1-U5.

### Claim 19 (depends on 17)

The polymer according to claim 17, characterized in that it is selected of formula III:
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
A a unit of formula II1 or II2 as defined in claim 17,
B, C, D, E a unit of formula II1, II2 or II3 as defined in claim 17,
x>0 and ≤1,
v, w, y, z≥0 and <1,
v+w+x+y+z 1, and
n an integer >1.

### Claim 20 (depends on 18)

The polymer according to claim 18, characterized in that it is selected from formulae Pi-Px
—[(U-Sp]n- Pi
—[(U1-Sp)x-(U2—Sp)y]n- Pii
—[(U-Sp1)x-(U-Sp2)y]n- Piii
—[(U-Sp)x-(D-Sp)y]n- Piv
—[(U-D)x-(U-Sp)y]n- Pv
-[(D)x-(Sp-U-Sp)y]n- Pvi
—[(U)x-(Sp-D-Sp)y]n- Pvi
-[D-U]n— Pvii
-[D-Sp-U-Sp]n- Pviii
-[D1-U-D2-U]n— Pix
-[D-U1-D-U2]n— Px
wherein A, D and Sp are as defined in claim 18, A, D and Sp can each, in case of multiple occurrence, also have different meanings, D1 and D2 have one of the meanings given for D and are different from each other, Sp1 and Sp2 have one of the meanings given for Sp and are different from each other, U1 and U2 have one of the meanings given for U and are different from each other, x and y denote the molar fractions of the corresponding units, x and y are each, independently of one another, a non-integer >0 and <1, with x+y=1, and n is an integer >1.

### Claim 21 (depends on 3)

The polymer according to claim 3, characterized in that one or more of the units of group A1, or one or more of C1, C2, C3, C4, or D, respectively, denote arylene or heteroarylene selected from the group consisting of the following formulae and their mirror images
wherein R11, R12, R13, R14, R15, R16, R17 and R18 independently of each other have one of the meanings of R5 as given in claim 3.

### Claim 22 (depends on 21)

The polymer according to claim 21, characterized in that one or more of the units of group A1, or one or more of C1, C2, C3, C4, or A, respectively, denote arylene or heteroarylene selected from the group consisting of the following formulae and their mirror images
wherein R11, R12, R13, R14, R15, R16, R17 and R18 are as defined in claim 21.

### Claim 23 (depends on 22)

The polymer according to claim 22, characterized in that one or more of the units of group A1, or one or more of C1, C2, C3, C4, or Sp, respectively, denote arylene or heteroarylene selected from the group consisting of the following formulae and their mirror images
wherein R11, R12, R13, R14 are as defined in claim 22.

### Claim 24 (depends on 17)

The polymer according to claim 17, characterized in that it comprises one or more units of group D1 as defined in claim 17, which are selected from the following formulae
wherein a is an integer from 1 to 16.

### Claim 25 (depends on 17)

The polymer according to claim 17, characterized in that it comprises one or more units of group E1 as defined in claim 17, which are selected from the following formula
A1-B1-(A2)aa E1a
wherein aa is 0 or 1, A1 and A2 have one of the meanings given for Ar1 in claim 17, and B1 is selected from group D1 as defined in claim 17.

### Claim 26 (depends on 17)

The polymer according to claim 17, characterized in that it comprises one or more units of group E1 as defined in claim 17, which are selected from the following formulae
wherein a is an integer from 1 to 16, and C1 and C2 have the meanings given in claim 17.

### Claim 27 (depends on 3, 17)

The polymer according to claim 17, characterized in that it comprises one or more units of group E1 as defined in claim 17, which are selected from the following formulae
wherein a is an integer from 1 to 16 and R11-14 independently of each other have one of the meanings of R5 as given in claim 3.

### Claim 28 (depends on 1, 21, 22, 23, 24, 25, 26, 27)

The polymer according to claim 1, characterized in that it comprises one or more units of formula I as defined in claim 1, and one or more units selected from the following groups
A2) the group consisting of arylene or heteroarylene selected from the group consisting of the formulae D1, D7, D10, D11, D19, D22, D29, D30, D35, D36, D37, D44, D55, D84, D87, D88, D89, D93, D94, D106, D111, D139, D140, D141, D146 and D150 as defined in claim 21,
and/or
A3) the group consisting of arylene or heteroarylene selected from the group consisting of the formulae A1, A6, A7, A15, A16, A20, A36, A74, A84, A88, A92, A94, A98 and A103 as defined in claim 22,
and/or
A4) the group consisting of arylene or heteroarylene selected from the group consisting of the formulae Sp1, Sp2, Sp6, Sp10, Sp11, Sp12, Sp13 and Sp14 s defined in claim 23,
and/or
D2) the group consisting of formulae D1-1 to D1-7 as defined in claim 24,
and/or
E2) the group consisting of formulae E1a, E1-1 to E1-7 and E1-1a to E1-7b as defined in claim 25, 26 or 27.

### Claim 29 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 21)

The polymer according to claim 1, characterized in that it is selected from the following subformulae
wherein R11-14 independently of each other have the meanings given in claim 21, n is an integer >1, x is >0 and ≤1, y is ≥0 and <1, and U is a unit selected from formula I as defined in any of claims 1 to 14.

### Claim 30 (depends on 1, 24, 28)

The polymer according to claim 1, characterized in that it is selected from the following subformulae
wherein R11-14, U, a and n have the meanings given in claims 24 and 28.

### Claim 31 (depends on 1, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)

The polymer according to claim 1, characterized in that it is selected of formula IV
RE1-chain-RE2 IV
wherein “chain” denotes a polymer chain selected from formulae Pi-Px, P1-P8 or PN1-PN6 as defined in any of claims 19-30, and RE1 and RE2 have independently of each other one of the meanings of L as defined in claim 1, or denote, independently of each other, H, F, Br, Cl, I, —CH2Cl, —CHO, —CR′═CR″2, —SiR′R″R′″, —SiR′X′X″, —SiR′R″X′, —SnR′R″R′″, —BR′R″, —B(OR′)(OR″), —B(OH)2, —O—SO2—R′, —C≡CH, —C≡C—SiR′3, —ZnX′ or an endcap group, X′ and X″ denote halogen, R′, R″ and R′″ have independently of each other one of the meanings of R0 given in claim 1, and two of R′, R″ and R′″ may also form a cyclosilyl, cyclostannyl, cycloborane or cycloboronate group with 2 to 20 C atoms together with the respective hetero atom to which they are attached.

### Claim 32 (depends on 1)

A composition comprising one or more polymers according to claim 1, and further comprising one or more compounds having one or more of a semiconducting, hole or electron transporting, hole or electron blocking, electrically conducting, photoconducting, photoactive or light emitting property, and/or a binder.

### Claim 33 (depends on 1, 32)

The composition of claim 32, comprising an n-type semiconductor which is a polymer according to claim 1, and further comprising one or more p-type semiconductors, preferably selected from conjugated polymers.

### Claim 34 (depends on 32)

The composition according to claim 32, comprising a second n-type semiconductors which is a fullerene or fullerene derivative, a non-fullerene acceptor small molecule, or an n-type conjugated polymer.

### Claim 35 (depends on 32)

A bulk heterojunction (BHJ) formed from a composition according to claim 32.

### Claim 36 (depends on 1, 32)

Use of a polymer according to claim 1, or of a composition according to claim 32, in an electronic or optoelectronic device, or in a component of such a device or in an assembly comprising such a device.

### Claim 37 (depends on 1, 32)

A formulation comprising one or more polymers according to claim 1, or a composition according to claim 32, and further comprising one or more solvents selected from organic solvents.

### Claim 38 (depends on 1, 32)

An electronic or optoelectronic device, or a component thereof, or an assembly comprising it, which comprises a polymer according to claim 1, or a composition according to claim 32.

### Claim 39 (depends on 38)

The electronic or optoelectronic device according to claim 38, which is selected from organic field effect transistors (OFET), organic thin film transistors (OTFT), organic light emitting diodes (OLED), organic light emitting transistors (OLET), organic light emitting electrochemical cells (OLEC), organic photovoltaic devices (OPV), organic photodetectors (OPD), organic solar cells, dye-sensitized solar cells (DSSC), perovskite-based solar cells (PSC), organic photoelectrochemical cells (OPEC), laser diodes, Schottky diodes, photoconductors, photodetectors, thermoelectric devices and LC windows.

### Claim 40 (depends on 38)

The component according to claim 38, which is selected from charge injection layers, charge transport layers, interlayers, planarizing layers, antistatic films, polymer electrolyte membranes (PEM), conducting substrates and conducting patterns.

### Claim 41 (depends on 38)

The assembly according to claim 38, which is selected from integrated circuits (IC), radio frequency identification (RFID) tags, security markings, security devices, flat panel displays, backlights of flat panel displays, electrophotographic devices, electrophotographic recording devices, organic memory devices, sensor devices, biosensors and biochips.

### Claim 42 (depends on 17)

A monomer of formula V1 or V2
RR1—(C1)a—U—(C2)b—(C3)c—(C4)d—RR2 V1
RR1—(C1)a—(C2)b—U—(C3)c—(C4)d—RR2 V2
wherein U, C1-4, a, b, c and d have the meanings of claim 17, and RR1 and RR2 are independently of each other selected from the group consisting of H, an activated C—H bond, Cl, Br, I, O-tosylate, O-triflate, O-mesylate, O-nonaflate, —SiMe2F, —SiMeF2, —O—SO2Z1, —B(OZ2)2, —CZ3═C(Z3)2, —C≡CH, —C≡CSi(Z1)3, —ZnX0 and —Sn(Z4)3, wherein X0 is halogen, Z1-4 are selected from the group consisting of alkyl and aryl, each being optionally substituted, and two groups Z2 may also form a cycloboronate group having 2 to 20 C atoms together with the B- and O-atoms, and wherein at least one of RR1 and RR2 is different from H.

### Claim 43 (depends on 42)

The monomer of claim 42, which is selected from the following subformulae
RR1—U—RR2 V1a
RR1—C1—U—C2—RR2 V1b
RR1—C1—U—RR2 V1c
RR1—U—C2—RR2 V1d
wherein U, C1, C2, RR1 and RR2 are as defined in claim 42.

### Claim 44 (depends on 1, 42, 43)

A process of preparing a polymer according claim 1, by copolymerising one or more monomers of formula V1, V2 or V1a-d as defined in claims 42 and 43 with each other or with one or monomers of the following formulae in an aryl-aryl coupling reaction
RR1—C1—RR2 MI
RR1—C2—RR2 MII
RR1—C3—RR2 MIII
RR1—C4—RR2 MIV
wherein C1-4, RR1 and RR2 have the meanings given in claim 42.