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The normalized excitation (Ex.), emission (Em.), and UV–vis (inset, top) spectra of 1,5-diisocyanonaphthalene in acetonitrile ([DIN] = 1.197 × 10−5 M, T = 20 °C, λex = 314 nm). The bottom inset shows the absorption and emission spectra of naphthalene recorded in cyclohexane [31].
