EP1896388A2 - Oligo-tetracene, ihre herstellung und ihre anwendung - Google Patents

Oligo-tetracene, ihre herstellung und ihre anwendung

Info

Publication number
EP1896388A2
EP1896388A2 EP06762105A EP06762105A EP1896388A2 EP 1896388 A2 EP1896388 A2 EP 1896388A2 EP 06762105 A EP06762105 A EP 06762105A EP 06762105 A EP06762105 A EP 06762105A EP 1896388 A2 EP1896388 A2 EP 1896388A2
Authority
EP
European Patent Office
Prior art keywords
oligo
tetracene
carbon atoms
tetracenes
organic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06762105A
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Rehahn
Michael Roth
Heinz Von Seggern
Roland Schmechel
Marcus Ahles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dritte Patentportfolio Beteiligungs GmbH and Co KG
Original Assignee
Technische Universitaet Darmstadt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universitaet Darmstadt filed Critical Technische Universitaet Darmstadt
Publication of EP1896388A2 publication Critical patent/EP1896388A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/615Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/20Polycyclic condensed hydrocarbons
    • C07C15/38Polycyclic condensed hydrocarbons containing four rings
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K10/00Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
    • H10K10/40Organic transistors
    • H10K10/46Field-effect transistors, e.g. organic thin-film transistors [OTFT]
    • H10K10/462Insulated gate field-effect transistors [IGFETs]
    • H10K10/464Lateral top-gate IGFETs comprising only a single gate
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/10OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14Carrier transporting layers
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00Systems containing at least three condensed rings
    • C07C2603/02Ortho- or ortho- and peri-condensed systems
    • C07C2603/40Ortho- or ortho- and peri-condensed systems containing four condensed rings
    • C07C2603/42Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings
    • C07C2603/44Naphthacenes; Hydrogenated naphthacenes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells

Definitions

  • the invention relates to substituted and unsubstituted oligo-tetracenes, their preparation and their use as semiconductors in organic field-effect transistors (OFETS), organic light-emitting diodes (OLEDs), sensors, organic solar cells and in other fields of optics and electronics.
  • OFETS organic field-effect transistors
  • OLEDs organic light-emitting diodes
  • sensors organic solar cells and in other fields of optics and electronics.
  • Organic field-effect transistors allow the use of inexpensive, lightweight and flexible plastic materials as an alternative to glass in liquid crystal displays and displays equipped with light emitting diodes.
  • the best-studied and semiconductive organic material in organic field-effect transistors is ⁇ -sexithienyl.
  • Pentacene-containing organic field-effect transistors have been reported to achieve field-effect mobility above 0.5 cm 2 / V xs and an on / off ratio greater than 10 8 (FIG. 1). Both results are comparable to those of hydrogenated amorphous silicones and are the best currently available for organic field-effect transistors.
  • pentacenes have the considerable disadvantage that they are chemically unstable, readily oxidize and disproportionate, and undergo cycloaddition reactions (2-4). Pentacene must therefore be cleaned and handled with great care under inert conditions.
  • the chemical derivatization of pentacene is very difficult because of its sensitivity and does not allow the use of conventional aromatic substitution reactions. Therefore, every derivative, if it is accessible at all, requires an individual synthesis. Systematic investigations and optimizations of pentacene derivatives for organic field effect transistors (OFETs) are therefore hardly possible.
  • HOMO occupied molecular orbital
  • tetracene which consists of four rather than five condensed benzene rings, is much more chemically stable, but exhibits much worse semiconductor properties.
  • OFETs based on polycrystalline tetracenes generally have field effect mobilities of 0.05 cm 2 / V xs and an on / off ratio of about 10 6 .
  • tetracene has an equally well delocalized ⁇ -electron system that is very similar to that of the pentacene.
  • One way to achieve this goal might be to extend the tetracene, because one crucial difference between the tetracene and the pentacene is that the tetracene is shorter. This could be the cause of lower order and less favorable transistor properties. If this assumption is correct, one solution to the problem might be to increase the length of the tetracene molecule increase without impairing its chemical and semiconducting properties. The attachment of hydrocarbons or simple aromatic groups to the longitudinal axis of the tetracenes is probably not the best way to do so because it may result in a reduction of the conductive properties and disturbances of the advantageous arrangement of the tetracene molecules associated with an increase in the sensitivity of the molecules to oxidation.
  • Alkyl or alkoxy radicals having 1 to 18 carbon atoms Alkyl or alkoxy radicals having 1 to 18 carbon atoms
  • Aryl radicals with up to 10 carbon atoms which are also one or more
  • n is an integer from 1 to 20, preferably from 1 to 6, very particularly preferably 1 or 2
  • X is a single bond, an alkylene group having 1-6 carbon atoms, a hydrocarbon chain having one or more conjugated double bonds, an aryl group or a system consisting of a plurality of fused, aromatic rings.
  • one or more of the six-atom condensed aromatic rings may be replaced by a five-atom ring which may also contain a heteroatom.
  • the bridging aryl group may be one or more phenyl rings unsubstituted or containing 1-18 carbon atoms, or a double unsaturated heteroatom containing five-membered ring or a ferrocenylene unit.
  • a particularly preferred oligotetracene is the 2- (tetracen-2-yl) tetracene of formula II
  • R and R ' can be hydrogen or have the meanings given for formula I.
  • Another preferred dietetracen corresponds to the formula III
  • R and R ' may have hydrogen or the meanings given for formula I.
  • oligo-tetracenes and ditetracenes are prepared by an oligomerization or dimerization of the corresponding tetracenes by, for example, a coupling reaction controlled by transition metals.
  • these processes require halogenated starting materials.
  • a tetracene derivative containing a chlorine or bromine atom in the 2-position was needed. Direct selective bromination of the tetracene leading to such a derivative is not possible. Therefore, a new process for the preparation of 2-bromotetracene has been developed.
  • one in any position, in particular in the 1-, 2- or 4-position, mono- or poly-substituted, preferably halogenated, in particular brominated tetracene oligomerized is particularly preferred.
  • a cross Coupling reaction eg Suzuki or Stille reaction.
  • the product obtained is then purified by vacuum sublimation.
  • ⁇ -chloro-o-xylene 1 was subjected to pyrolysis at about 800 ° C. and 0.5 mbar.
  • Benzocyclobutene 2 was obtained in 45% yield. Its selective bromination was carried out by treating benzocyclobutene dissolved in acetic acid with a mixture of bromine and iodine at room temperature. This gave 4-bromobenzocyclobutene 3.
  • the coupling reaction was carried out with about 80% yield in a mixture of Dimethylformamide and Tolyol carried out at 80 0 C, with bis (cyclooctadienyl) nickel (O) in stoichiometric. Quantities was used. After recrystallization from o-dichlorobenzene, dehydrogenation of 7 was achieved by treatment with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) in boiling o-xylene. After purification by repeated vacuum sublimation, orange-red crystals of 2- (tetracen-2-yl) tetracene 8 were recovered in 75% yield. All intermediates were characterized by 1 H and 13 C NMR spectroscopy and mass spectroscopy. Compound 8 was characterized by UV-vis spectroscopy.
  • FIG. 1A shows a representative spectrum taken in a thin layer of 8 on a quartz wafer.
  • the synthesis of the oligo- and ditetracenes according to the invention can be carried out in particular successfully, when oligomerizing or dimerizing a two-position halogenated, preferably brominated tetracene.
  • a two-position halogenated, preferably brominated tetracene Particularly suitable for this purpose are the dimerizations, e.g. with the help of organoboron compounds in a cross-coupling reaction, which is widely known as the Suzuki or Stille reaction in chemistry.
  • OFETs organic field-effect transistors
  • the SiO 2 surface was treated with a silane coupling reagent to improve the homogeneity of the organic film and substrate coverage.
  • the substrates thus prepared were introduced directly into a vacuum chamber and the influence of ambient air was avoided.
  • the ditetracene 8 was x 10 -6 mbar thermally deposited at a pressure of 1 to structures with prepared at room temperature or at 140 0 C. Electrical characterization was performed using an HP 4155 A semiconductor inert property analyzer. On standard devices with an untreated SiO 2 surface, the organic field-effect transistors produced with ditetracene as semiconductors were tested for their characteristic properties. The representative properties are shown in FIG.
  • the curves show the characteristic properties of monopolar field effect transistors with good saturation property.
  • the method according to the invention thus demonstrates an efficient synthesis method which can be used in a very general manner, according to which bis- (tetracenyl aromatics) can be prepared.
  • These compounds are suitable for highly efficient organic field-effect transistors with increased charge mobility.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Optics & Photonics (AREA)
  • Thin Film Transistor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Electroluminescent Light Sources (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Photovoltaic Devices (AREA)
EP06762105A 2005-06-25 2006-06-21 Oligo-tetracene, ihre herstellung und ihre anwendung Withdrawn EP1896388A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029574A DE102005029574A1 (de) 2005-06-25 2005-06-25 Oligo-Tetracene, ihre Herstellung und ihre Anwendung
PCT/EP2006/005926 WO2007000268A2 (de) 2005-06-25 2006-06-21 Oligo-tetracene, ihre herstellung und ihre anwendung

Publications (1)

Publication Number Publication Date
EP1896388A2 true EP1896388A2 (de) 2008-03-12

Family

ID=37461419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762105A Withdrawn EP1896388A2 (de) 2005-06-25 2006-06-21 Oligo-tetracene, ihre herstellung und ihre anwendung

Country Status (8)

Country Link
US (1) US8293957B2 (ja)
EP (1) EP1896388A2 (ja)
JP (1) JP5171617B2 (ja)
KR (2) KR101156239B1 (ja)
CN (1) CN101203471A (ja)
CA (1) CA2610816C (ja)
DE (1) DE102005029574A1 (ja)
WO (1) WO2007000268A2 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007238565A (ja) * 2006-03-10 2007-09-20 Hokkaido Univ ポリアセン二量体

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JP3591226B2 (ja) * 1997-06-18 2004-11-17 東洋インキ製造株式会社 有機エレクトロルミネッセンス素子材料およびそれを使用した有機エレクトロルミネッセンス素子
JPH11111458A (ja) * 1997-09-29 1999-04-23 Toyo Ink Mfg Co Ltd 有機エレクトロルミネッセンス素子材料およびそれを使用した有機エレクトロルミネッセンス素子
WO2000003565A1 (en) * 1998-07-10 2000-01-20 Fed Corporation Amorphous molecular materials for optoelectronic devices and process for producing the same
US6284562B1 (en) * 1999-11-17 2001-09-04 Agere Systems Guardian Corp. Thin film transistors
EP1182183B1 (en) * 2000-03-29 2009-12-09 Idemitsu Kosan Co., Ltd. Anthracene derivatives and organic electroluminescent devices made by using the same
JP2002060742A (ja) * 2000-08-11 2002-02-26 Toyo Ink Mfg Co Ltd 有機エレクトロルミネッセンス素子材料及びそれを使用した有機エレクトロルミネッセンス素子
JP2002167578A (ja) * 2000-09-25 2002-06-11 Toyo Ink Mfg Co Ltd 有機エレクトロルミネッセンス素子材料およびそれを使用した有機エレクトロルミネッセンス素子
JP3870102B2 (ja) * 2001-02-22 2007-01-17 キヤノン株式会社 有機発光素子
US20030097010A1 (en) * 2001-09-27 2003-05-22 Vogel Dennis E. Process for preparing pentacene derivatives
US6998068B2 (en) * 2003-08-15 2006-02-14 3M Innovative Properties Company Acene-thiophene semiconductors
JP2003138251A (ja) * 2001-10-30 2003-05-14 Canon Inc 有機発光素子
JP3902993B2 (ja) * 2002-08-27 2007-04-11 キヤノン株式会社 フルオレン化合物及びそれを用いた有機発光素子
JP4336483B2 (ja) 2002-09-04 2009-09-30 キヤノン株式会社 ジアザフルオレン化合物及びそれを用いた有機発光素子
US7109519B2 (en) * 2003-07-15 2006-09-19 3M Innovative Properties Company Bis(2-acenyl)acetylene semiconductors
JP4613505B2 (ja) * 2004-03-30 2011-01-19 Tdk株式会社 有機el素子用化合物及び有機el素子
JP2006028055A (ja) * 2004-06-17 2006-02-02 Konica Minolta Holdings Inc 有機半導体材料、有機トランジスタ、電界効果トランジスタ及びスイッチング素子
JP2006114844A (ja) * 2004-10-18 2006-04-27 Tdk Corp 有機el素子材料の選択方法、有機el素子の製造方法及び有機el素子
US20060105199A1 (en) * 2004-11-18 2006-05-18 3M Innovative Properties Company Electroluminescent devices containing trans-1,2-bis(acenyl)ethylene compounds
KR20080024136A (ko) * 2005-05-21 2008-03-17 메르크 파텐트 게엠베하 올리고머 폴리아센 및 반도체 배합물

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Also Published As

Publication number Publication date
US20080214838A1 (en) 2008-09-04
CA2610816A1 (en) 2007-01-04
KR20120036376A (ko) 2012-04-17
JP5171617B2 (ja) 2013-03-27
KR101156239B1 (ko) 2012-06-13
CA2610816C (en) 2012-09-11
WO2007000268A2 (de) 2007-01-04
DE102005029574A1 (de) 2006-12-28
JP2008546728A (ja) 2008-12-25
WO2007000268A3 (de) 2007-04-19
KR20080027274A (ko) 2008-03-26
WO2007000268B1 (de) 2007-05-31
US8293957B2 (en) 2012-10-23
CN101203471A (zh) 2008-06-18

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