Phototautomeric fluorescence

A system undergoing excited-state intramolecular proton transfer was suggested as a solar energy collector. Moreover, since such systems reveal a very large Stokes shift due to the excited-state intramolecular proton transfer (ESIPT) reactions, resulting in the phototautomeric fluorescence with a relatively high quantum yield (about 30%), they are recommended as potential solar energy concentrators. 

Other Processes - The phototautomerism of A-salicylideneanilines has been studied at 77 A study of the fluorescent behaviour of the... 

Figure 3.14 Double proton transfer in pyrroloquinolines in alcohol solutions, (a) Structure of 1 H-pyrrolo[3,2-h]quinoline (7) and a scheme of the photoinduced tau-tomerization leading from a normal form to a phototautomeric form [52, 61, 62]. (b) Structure of 7,8,9,10-tetrahydropyrido[2,3-o] carbazole (30) [52] and pyrido[2,3-o] car-bazole (31) [52]. (c) Fluorescence of 7, 30, and 31 (solid lines) and of the corresponding tautomeric model structures (dotted lines), shown as 7m, 30m, and 31 m. The...

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