Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Thin film transistors including indolocarbazoles

a technology of indolocarbazole and film transistor, which is applied in the direction of basic electric elements, electrical apparatus, and semiconductor devices, can solve the problem of not being suitable for low-cost otft applications

Inactive Publication Date: 2006-06-15
XEROX CORP
View PDF10 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these semiconductors are either insoluble or are sensitive to air, and may therefore not be suitable for low-cost OTFT applications.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thin film transistors including indolocarbazoles
  • Thin film transistors including indolocarbazoles
  • Thin film transistors including indolocarbazoles

Examples

Experimental program
Comparison scheme
Effect test

example 1

(a) Synthesis of 5,11-Dioctylindolo[3,2-b]carbazole (1)

[0065] 5,11-Dihydridoindolo[3,2-b]carbazole was synthesized by double Fischer indolization starting from phenylhydrazine and 1,4-cyclohexanedione according to the method described in B. Robinson, J. Chem. Soc. 1963, 3097-3099.

[0066] A freshly prepared 50% aqueous NaOH solution (4 mL) was added to a well-stirred mixture of 5,11-dihydridoindolo[3,2-b]carbazole, (0.513 g, 2 mmol), benzyltriethylammonium chloride (0.09 g, 0.4 mmol), 1-bromooctane (1.55 g, 8 mmol), and DMSO (20 mL) in a 100-mL flask under an argon atmosphere. The mixture was stirred at room temperature for 2.5 h and then heated to 65° C. and maintained at this temperature for 4 h. Subsequently the reaction mixture was cooled down to room temperature and poured into 200 mL methanol with stirring. The precipitated yellow solid was filtered off and washed with water, and 3 times each with N,N-dimethylformamide, methanol, and acetone. The yellow solid was purified by c...

example 2

(a) 5,11-Bis(4-octylphenyl)indolo[3,2-b]carbazole (2)

[0073] 1-Iodo-4-octylbenzene was first prepared as follows. A mixture of 1-phenyloctane (14.87 g, 78.13 mmol), iodine (7.93 g, 31.25 mmol), H5IO6 (3.56 g, 15.63 mmol), acetic acid (40 mL), deionized water (7 mL), and 98% sulfuric acid (2.59 g) in a 100 mL flask was heated at 80° C. for about 3 h until the purple iodine color disappeared. The reaction mixture was extracted with dichloromethane, neutralized with saturated aqueous NaHCO3, and washed three times with water. The organic layer was separated, dried over MgSO4, filtered, and the solvent was removed using a rotary evaporator. After column chromatography on silica gel using hexane, 22.53 g of a colorless viscous liquid was obtained; 1H NMR indicated that the crude product was a mixture of 1-iodo-4-octylbenzene (69%), 1-iodo-2-octylbenzene (24%), and unreacted 1-phenyloctane (7%). This crude product was used in subsequent preparation of 5,11-bis(4-octylphenyl)indolo[3,2-b]c...

example 3

(a) Synthesis of 2,8-dichloro-5,11-didodecylindolo[3,2-b]carbazole (3)

[0084] To a well-stirred suspension of 4-chlorophenylhydrazine hydrochloride (24.5 g, 0. 137 mol) in ethanol (200 mL) in a 500-mL flask was added a solution of sodium acetate trihydrate (56.34 g, 0.414 mol) in water (100 mL), and the resultant mixture was stirred for 15 min at room temperature. Subsequently, a solution of 1,4-cyclohexandione (7.67 g, 68.4 mmol) in ethanol (50 mL) was added, followed by addition of 50 mL of acetic acid. The reaction mixture was heated at 50° C. for 1 h before cooling down to 0° C. and maintained there for 1 h. The precipitated light yellow crude cyclohexane-1,4-dione bis[(4-chlorophenyl)hydrazone] was filtered, washed with water, air-dried, and added in small portions to a mixture of acetic acid (75 mL) and sulfuric acid (15 mL, 98%) in a 1-L flask with stirring at 10° C. over a period of 10 min, and then allowed to warm to 25° C. and stirred for 10 min. Subsequently, the mixture ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A thin film transistor composed of a semiconductor layer including an optionally substituted indolocarbazole.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Beng S. Ong et al., U.S. application Ser. No. unavailable (Attorney Docket No. A3571-US-NP), filed on the same day as the present application, titled “COMPOUND WITH INDOLOCARBAZOLE MOIETIES AND DEVICES CONTAINING SUCH COMPOUND.”[0002] Yuning Li et al., U.S. application Ser. No. unavailable (Attorney Docket No. 20031573-US-NP), filed on the same day as the present application, titled “PROCESS TO FORM COMPOUND WITH INDOLOCARBAZOLE MOIETIES.”BACKGROUND OF THE INVENTION [0003] Organic thin-film transistors (OTFTs) have attracted much attention in recent years as a low-cost alternative to amorphous silicon transistors for electronic applications. OTFTs are particularly suited for applications where large-area circuits (e.g., backplane electronics for large displays), desirable form factors and structural features (e.g., flexibility for e-paper), and affordability (e.g., ultra low cost for ubiquitous RFID tags) are essential. The key componen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01L27/12
CPCH01L51/0067H01L51/0541H01L51/0072H10K85/654H10K10/464H10K85/6572
Inventor WU, YILIANGONG, BENG S.QI, YULI, YUNING
Owner XEROX CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com