Cyclic Ether Auxofluors on Oligophenylene Laser Dyes

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Abstract
Laser dyes with terphenyl and quaterphenyl as the fluorophors and with acyclic ether auxofluors were improved when the ether groups were made cyclic. Dyes containing cyclic ethers in 5- and 6-membered rings were observed to lase in the 360–400 nm region with better lifetime and/or solubility than their acyclic analogs. In one case the laser output wavelength of a quaterphenyl fitted with cyclic ether auxofluors was red-shifted enough to match the wavelength of a sexiphenyl without auxofluors.

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