Luminescent 2‐(hydroxyaryl)‐1 H‐naphth[2,3‐d] imidazole derivatives

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The synthesis and spectroscopic properties of a new class of luminescent 1 H ‐naphth[2,3‐ d ]‐imidazole compounds are described. The ultraviolet spectra of 2‐(hydroxyaryl)‐1 H ‐naphth[2,3‐ d ]‐imidazole derivatives are presented and discussed. Significant effects of structure and physical state of the luminescent compounds are observed on the measured emission wave length throughout the visible spectrum. The luminescence quantum efficiency of one of the naphthimidazole derivatives is reported.