The excited state intramolecular proton transfer has been observed in two Novel Phenanthroimidazole derivative molecules in aqueous solution of the molecules. Formation of new excited state species and large stokes shift of emission ~0.38eV for F3 and 0.49 eV for F5 has been recorded, suggesting their potential application in chemical and biological probing and imaging.

© 2020 The Author(s)

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