High Dye Yield (HDY) couplers are partial dyes that, upon reaction with an oxidized color developer, release a high-extinction yellow dye. Relative to magenta and cyan dyes, yellow photographic dyes have low molar attenuation coefficients. Evaluating the yellow dye portion of the HDY coupler with enhanced optical and physical properties may, therefore, render these materials attractive for bioimaging applications. This research is focused on better understanding the effects of conformational torsion on the absorption properties of (E)-2-(5-(tert-butyl)benzo[d]oxazol-2-yl)-3-(4-(cyclopentylamino)phenyl)acrylonitrile by varying the ring size of the bicyclic amino-ketone portion of the yellow chromophore. In order to probe the changes in electronic and physical properties, ultraviolet-visible and fluorescence spectroscopy will be employed. Amplification of the yellow dye may extend its application to new imaging systems such as cell staining. The development, synthesis, and evaluation of (E)-2-(5-(tert-butyl)benzo[d]oxazol-2-yl)-3-(4-(cyclopentylamino)phenyl)acrylonitrile derivatives as enhanced yellow dyes are presented.

Physical organic study of ring strain on yellow dye containing couplers

2019 Spring National Meeting

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