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A novel urea-based “turn-on” fluorescent sensor 1,3-bis(4-(tert-butyldimethylsilyloxy)phenyl)urea (TBSU) has been synthesized and its sensing properties are explored. This sensor exhibited highly selective and sensitive detection of Fe3+ and F− ions in aqueous DMSO solution (DMSO/H2O, 95/5, v/v) with a significant fluorescence and absorption enhancement. The 1:1 stoichiometric structure between TBSU...
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