Laser dyes comprising fluorescent and laser dyestuff residues

Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system

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260144, 260152, 260153, 260335, 260336, 25230117, 331 945R, 544198, 544216, 585 26, 585320, 585422, 585469, C07C 1500, C07D25130, C07D25154, C07D31182

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041654340

ABSTRACT:
Novel dyestuffs comprising at least one laser dyestuff radical and at least one fluorescent dyestuff radical, where the fluorescent range of the fluorescent dyestuff radical overlaps the absorption range of the laser dyestuff radical and is linked with the laser dyestuff radical directly or via a bridge member having a length of at most 20 A in such a manner that the .pi. electron systems of the individual radicals are decoupled, are outstandingly effective and long lived when used in dyestuff lasers. The dyestuffs can be of the formula:

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patent: 3609194 (1971-09-01), Gerhardt
patent: 3649696 (1972-03-01), Kazan
patent: 3798566 (1974-03-01), McColgin et al.
patent: 3859254 (1975-01-01), Hamb et al.
patent: 3873940 (1975-03-01), Drexhage
patent: 3879678 (1975-04-01), McColgin et al.
patent: 4006158 (1977-02-01), Fleck et al.
patent: 4035740 (1977-07-01), Schafer et al.
patent: 4044146 (1977-08-01), Karpati et al.
Drexhage (II), J. Res. Nat. Bur. Stand, (A. Physics and Chemistry), vol. , No. 3, pp. 421 to 428 (1976).

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