Hole transporting material

• US 5,116,708 A
• Filed: 12/08/1989
• Issued: 05/26/1992
• Est. Priority Date: 12/09/1988
• Status: Expired due to Term

• Current Assignee: Nippon Mitsubshi Oil Corporation
• Original Assignee: Nippon Oil Corporation (ENEOS Holdings, Inc.)
• Inventors: Matsuura, Kazuo, Kuroda, Nobuyuki, Kataoka, Naoki, Shikatani, Yutaka
• Primary Examiner(s): GOODROW, JOHN L
• Application Number:
  US07/447,649
• Time in Patent Office: 900 Days
• Field of Search: 430/56, 430/59, 430/66, 430/69, 564/309
• US Class Current: 430/58.7
• CPC Class Codes: C08G 73/02 Polyamines
• CPC Class Codes: H01B 1/12 organic substances organic macromolecular compounds or compositions C08
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source

Abstract

A hole transporting material is constituted by a compound represented by the following general formula (1): ##STR1## wherein R¹, R², R³, R⁴ and R⁵, which may be the same or different, are each independently hydrogen or a hydrocarbon residue having 1 to 20 carbon atoms; Ar¹ and Ar² are each independently a divalent hydrocarbon residue; l is an integer of 0 or more; m is an integer of 1 or more; and n is an integer of 2 or more.

Claims

1. A hole transporting material is constituted by a compound represented by the following general formula (1):

##STR9## wherein R¹, R², R³, R⁴ and R⁵, which may be the same or different, are each independently hydrogen or a hydrocarbon residue having 1 to 20 carbon atoms;

Ar¹ and Ar² are each independently a divalent hydrocarbon residue;

λ

is an integer of 0 or more;

m is an integer of 1 or more; and

n is an integer of 2 or more.

2. A hole transporting material as set forth in claim 1, wherein R¹, R², R³, R⁴ and R⁵ are each independently hydrogen, alkyl, aryl, aralkyl, or a derivative thereof;

Ar¹ and Ar² are each independently a divalent group represented by the general formula;

##STR10## wherein R¹ is as defined above.

3. A hole transporting material as set forth in claim 1 or claim 2, wherein λ

is 1 to 5, m is 1 to 30, and n is 5 to 500.

4. A hole transporting material as set forth in claim 1 or claim 2, wherein λ

is 0, m is 1, and n is 30 to 1000.

5. A hole transporting material as set forth in claim 1, which is in the form of a thin film.

6. A hole transporting material as set forth in claim 1, wherein the compound represented by the general formula

(1) is prepared by polycondensation of a compound represented by the following general formula (5) and a compound represented by the following general formula (6):

##STR11## wherein R¹, R², R³, R⁴, R⁵, Ar¹, Ar², λ and

m are as defined claim 1.

7. A photoconductor constituted by a compound represented by the following general formula (1):

##STR12## wherein R¹, R², R³, R⁴ and R⁵, which may be the same or different, are each independently hydrogen or a hydrocarbon residue having 1 to 20 carbon atoms;

Ar¹ and Ar² are each independently a divalent aromatic hydrocarbon residue;

λ

is an integer of 0 or more, m is an integer of 1 or more; and

n is an integer of 2 or more.

8. A hole transporting material for an electroluminescent device, constituted by a compound represented by the following general formula (1):

##STR13## wherein R¹, R², Rhu 3, R⁴ and R⁵, be the same or different, are each independently hydrogen or a hydrocarbon residue having 1 to 20 carbon atoms;

Ar¹ and Ar² are each independently a divalent aromatic hydrocarbon residue;

λ

is an integer of 0 or more;

m is an integer of 1 or more; and

n is an integer of 2 or more.