Substituted and unsubstituted ring-bridged para-oligophenylene U

Details Substituted and unsubstituted ring-bridged para-oligophenylene U Substituted and unsubstituted ring-bridged para-oligophenylene U

1984-11-23

1989-10-24

Niebling, John F.

Compositions

Organic luminescent material containing compositions

Scintillating or lasing compositions

372 53, C09K 1106

Patent

active

048760293

ABSTRACT:
The present invention relates to laser dyes having improved characteristics comprising substituted and unsubstituted ring-bridged p-oligophenylenes having at least four and no more than 8 phenyl groups. These improved laser dyes can be excited by pump lasers and are capable of producing stimulated coherent emission in the near ultraviolet range, particularly in the range below 400 nm, and have improved photostability. The p-oligophenylenes used according to the invention have the following characteristics:

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