Organic semiconducting compounds
The invention relates to novel organic semiconducting compounds containing a polycyclic unit, to methods for their preparation and educts or intermediates used therein, to compositions, polymer blends and formulations containing them, to the use of the compounds, compositions and polymer blends 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 photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
1. A compound which is selected from the following formulae
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
R 1,2 H, F, Cl, CN or straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, in which one or more CH 2 groups are optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —C(═O)—O—, —O—C(═O)—, —NR 0 —, —SiR 0 R 00 —CF 2 —, —CR 0 ═CR 00 —, —CY 1 ═CY 2 — 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 optionally replaced by F, Cl, Br, I or CN, and in which one or more CH 2 or CH 3 groups are 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, does optionally contain fused rings, and is unsubstituted or substituted by one or more identical or different groups L,
R T1 , R T2 —C(═O)—OR*, —C(═S)—OR*, —CH═CH(CN), —CH═C(CN) 2 , —C(CN)═C(CN) 2 , —CH═C(CN)(R a ), CH═C(CN)—C(═O)—OR*, —CH═C(CO—OR*) 2 , or formulae T1-T25, T28-T37, T40-T52,
L F, Cl, —NO 2 , —CN, —NC, —NCO, —NCS, —OCN, —SCN, R 0 , OR 0 , SR 0 , —C(═O)X 0 , —C(═O)R 0 , —C(═O)—OR 0 , —O—C(═O)—R 0 , —NH 2 , —NHR 0 , —NR 0 R 00 , —C(═O)NHR 0 , —C(═O)NR 0 R 00 , —SO 3 R 0 , —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
R 0 , R 00 H or straight-chain or branched alkyl with 1 to 20 C atoms that is optionally fluorinated,
X 0 halogen,
Ar 3,4 arylene or heteroarylene that 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 R 1 or L, or CY 1 ═CY 2 or —C≡C—,
Y 1 , Y 2 H, F, Cl or CN
a, b 0, 1, 2 or 3, wherein a+b≥1, wherein a and b do not equal to 1 at the same time,
wherein formula T1-T25, T28-T37, T40-T52 are
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
R a , R b 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, or one of the meanings given for L,
R* alkyl with 1 to 20 C atoms which is straight-chain, branched or cyclic, and is unsubstituted, or substituted with one or more F or Cl atoms or CN groups, or perfluorinated, and in which one or more C atoms are optionally replaced by —O—, —S—, —C(═O)—, —C(═S)—, —SiR 0 R 00 —, —NR 0 R 00 —, —CH R 0 =C R 00 — or —C≡C— such that O- and/or S-atoms are not directly linked to each other, or R* has one of the meanings given for R a ,
L F, Cl, —NO 2 , —CN, —NC, —NCO, —NCS, —OCN, —SCN, R 0 , OR 0 , SR 0 , —C(═O)X 0 , —C(═O)R 0 , —C(═O)—OR 0 , —O—C(═O)—R 0 , —NH 2 , —NHR 0 , —NR 0 R 00 , —C(═O)NHR 0 , —C(═O)NR 0 R 00 , —SO 3 R 0 , —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
L′ H or one of the meanings of L,
R 0 , R 00 H or straight-chain or branched alkyl with 1 to 12 C atoms that is optionally fluorinated,
X 0 halogen,
r 0, 1, 2, 3 or 4,
s 0, 1, 2, 3, 4 or 5,
t 0, 1, 2 or 3
and
u 0, 1 or 2.
2. A compound according to claim 1 , wherein R T1 and R T2 are selected from the following formulae
wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
R a 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, or one of the meanings given for L,
L F, Cl, —NO 2 , —CN, —NC, —NCO, —NCS, —OCN, —SCN, R 0 , OR 0 , SR 0 , —C(═O)X°, —C(═O)R 0 , —C(═O)—OR 0 , —O—C(═O)—R 0 , —NH 2 , —NHR 0 , —NR 0 R 00 , —C(═O)NHR 0 , —C(═O)NR 0 R 00 , —SO 3 R 0 , —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
L′ H or one of the meanings of L,
R 0 , R 00 H or straight-chain or branched alkyl with 1 to 12 C atoms that is optionally fluorinated,
X 0 halogen,
r 0, 1, 2, 3 or 4,
s 0, 1, 2, 3, 4 or 5.
3. A compound according to claim 1 , wherein R 1-2 are selected from alkyl or alkoxy with 1 to 16 C atoms which is optionally fluorinated, aryl or heteroaryl that is mono- or polycyclic, optionally contains fused rings, has 4 to 30 ring atoms, and is optionally substituted by one or more groups wherein the individual radicals, independently of each other and on each occurrence identically or differently, have the following meanings
L F, Cl, —NO 2 , —CN, —NC, —NCO, —NCS, —OCN, —SCN, R 0 , OR 0 , SR 0 , —C(═O)X°, —C(═O)R 0 , —C(═O)—OR 0 , —O—C(═O)—R 0 , —NH 2 , —NHR 0 , —NR 0 R 00 , —C(═O)NHR 0 , —C(═O)NR 0 R 00 , —SO 3 R 0 , —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF 5 , or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
R 0 , R 00 H or straight-chain or branched alkyl with 1 to 20 C atoms that is optionally fluorinated,
X 0 halogen.
4. A composition comprising one or more compounds 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.
5. A composition comprising one or more compounds 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, further comprising one or more n-type semiconductors, and further comprising one or more p-type semiconductors.
6. A composition of claim 4 , comprising one or more p-type semiconductors selected from conjugated polymers.
7. A composition of claim 6 , wherein the conjugated polymers are selected from the following subformulae
wherein R 11-19 independently of each other denote H or have one of the meanings of L, wherein
L is F, Cl, —NO 2 , —CN, —NC, —NCO, —NCS, —OCN, —SCN, R 0 , OR 0 , SR 0 , C(═O)X 0 , —C(═O)R 0 , —C(═O)—OR 0 , —O—C(═O)—R 0 , —NH 2 , —NHR 0 , —NR 0 R 00 , —C(═O)NHR 0 , —C(═O)NR 0 R 00 , —SO 3 R 0 , —SO 2 R 0 , —OH, —NO 2 , —CF 3 , —SF S , or optionally substituted silyl, or carbyl or hydrocarbyl with 1 to 30 C atoms that is optionally substituted and optionally comprises one or more hetero atoms,
R 0 , R 00 are, independently, H or straight-chain or branched alkyl with 1 to 20 C atoms that is optionally fluorinated,
X 0 is halogen,
X 1 , X 2 , X 3 and X 4 denote H, F or Cl,
x and y are each, independently of one another >0 and <1, with x+y=1,
and
n is an integer >1.
8. A composition according to claim 4 , comprising one or more n-type semiconductors selected from fullerenes or fullerene derivatives.
9. A bulk heterojunction (BHJ) formed from a composition according to claim 4 .
10. A method comprising including a compound according to claim 1 , in an electronic or optoelectronic device, or in a component of such a device or in an assembly comprising such a device.
11. A formulation comprising one or more compounds according to claim 1 , and further comprising one or more solvents selected from organic solvents.
12. An electronic or optoelectronic device, or a component thereof, or an assembly comprising it, which comprises a compound according to claim 1 .
13. An electronic or optoelectronic device according to claim 12 , 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 photo-detectors (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.
14. A component of an electronic or optoelectronic device according to claim 12 , which is selected from charge injection layers, charge transport layers, interlayers, planarizing layers, antistatic films, polymer electrolyte membranes (PEM), conducting substrates and conducting patterns.
15. An assembly comprising an electronic or optoelectronic device according to claim 12 , 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.