Discotic octasubstituted tetrapyrazinotetraazaporphyrazines

Details Discotic octasubstituted tetrapyrazinotetraazaporphyrazines Discotic octasubstituted tetrapyrazinotetraazaporphyrazines

1989-12-27

1991-11-05

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 2522996, 2522993, 2522992, 540121, C09K 1934, C09K 1958, C07D48722

Patent

active

050629905

ABSTRACT:
Octasubstituted tetraphyrazinotetraazaporphrazine and compositions forming an electron acceptable discotic liquid crystal phase are disclosed. Said compounds and the metal complexes are easily soluble in an organic solvent such as chloroform or dichloromethane etc and are insoluble in acetone and alcohols; and therefore a columnar phase by silica gel/dichloromethane, recrystallization from tetra-hydrofuran or refining through solid liquid extraction by acetone is possible. Furthermore, stability in a giant molecular can be expected and a functional membrane can be formed by a solution cast method etc., thereby employing as an electon or photoelectron material or an indication element.

REFERENCES:
patent: 3058991 (1962-10-01), Wolf et al.
patent: 3063779 (1962-11-01), Rosch et al.
patent: 3509146 (1970-04-01), Weinberger et al.
patent: 3923645 (1975-12-01), Anderson, Jr. et al.
patent: 4647478 (1987-03-01), Formanek et al.
patent: 4657554 (1987-04-01), Reinert et al.
patent: 4960538 (1990-10-01), Itoh et al.

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