An Organic White Light-Emitting Fluorophore
Youjun Yang(Louisiana State University), Mark Lowry(Louisiana State University), C.M. Schowalter(Louisiana State University), Sayo O. Fakayode(Louisiana State University), Jorge O. Escobedo(Louisiana State University), Xiangyang Xu(Louisiana State University), Huating Zhang(Louisiana State University), Timothy J. Jensen(Louisiana State University), Frank R. Fronczek(Louisiana State University), Isiah M. Warner(Louisiana State University), Robert M. Strongin(Louisiana State University)
Cited by 208Open Access
Abstract
The synthesis of new benzo[a]- and [b]xanthene dye frameworks is described. A unique benzo[a]xanthene, seminaphtho[a]fluorone (SNAFR-1), is studied in a variety of media. The optimization of solution parameters and excitation wavelengths allows SNAFR-1 to display red, green, and blue emission bands of approximately equal intensities and also to produce white light. Ratiometric red (anion) and green (neutral) emissions are observed upon varying solution pH. A pH-independent violet-blue emission band is due to the addition of nucleophiles to the benzylic carbon of SNAFR-1.
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