Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Wolfgang Luttke

Fritz P Schafer

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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Gottingen-Nikolausberg, Germany

Wolfgang Luttke