Organic-heat-sensitive semiconductive compounds

• US 4,202,799 A
• Filed: 06/13/1978
• Issued: 05/13/1980
• Est. Priority Date: 06/17/1977
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yoshimura, Susumu, Murakami, Mutsuaki, Shinoda, Midori
• Primary Examiner(s): Parr, E. Suzanne
• Application Number:
  US05/915,259
• Time in Patent Office: 700 Days
• Field of Search: 252/500, 546/275, 546/330
• US Class Current: 252/500
• CPC Class Codes: C07D 213/20 Quaternary compounds thereof
• CPC Class Codes: C07D 277/22 with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
• CPC Class Codes: H01C 7/049 mainly consisting of organic or organo-metal substances H01C7/041 takes precedence

Abstract

Organic heat-sensitive semiconductive compounds composed of (N-n-propylpyridinium) (7,7,8,8-tetracyanoquinodimethane)₂ and (N-n-propylthiazolium) (7,7,8,8-tetracyanoquinodimethane)₂ or (N-n-butylthiazolium) (7,7,8,8-tetracyanoquinodimethane)₂. The compound using the propylthiazolium component exhibits phase transition phenomena in a wide range of temperatures lower than that of the basic component of (N-n-propylpyridinium) (TCNQ)₂. While, the compound using the butylthiazolium component shows inherent temperature hystereses different from that of the basic component.

Claims

1. An organic heat-sensitive semiconductive compound of an (N-n-propylpyridinium)(TCNQ)₂ complex salt and an (N-n-alkylthiazolium)(TCNQ)₂ complex salt wherein the alkyl moiety is propyl or butyl.

2. An organic heat-sensitive semiconductive compound according to claim 1, wherein said alkyl moiety is propyl.

3. An organic heat-sensitive semiconductive compound according to claim 2, wherein said compound is (N-n-propylpyridinium)_1-x (N-n-propylthiazolium)_x (7,7,8,8-tetracyanoquinodimethane)₂ expressed by the following formula ##STR4## wherein x is in a range below 0.6, inclusive.

4. An organic heat-sensitive semiconductive compound according to claim 1, wherein said alkyl moiety is butyl.

5. An organic heat-sensitive semiconductive compound according to claim 4, wherein said compound is (N-n-propylpyridinium)_1-y (N-n-butylthiazolium)_y (TCNQ)₂ expressed by the following formula ##STR5## wherein y is in a range of from 0.2 to 0.8.