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4-Hydroxy-5-nitrophenyl-2-(pyren-1-yl)thiazole and a series of its O-substituted derivatives were synthesised. These compounds are fluorescent in solution, emitting light in the region 598–626 nm with quantum yields 0.19–0.29. Large Stokes shifts, approaching 8500 cm−1, were explained by the intramolecular charge transfer character of the lowest excited state, confirmed by TD DFT calculations. The...
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