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Low Energy Bioimaging through Molecular Up-Conversion Emission with Imidazolium- and Benzenetriol-Based Er(III)
Jessica Q Wallace1, Pooja Dogra2, Ethan R Crum1
1Department of Chemistry, University of Nevada Reno, Reno, Nevada 89557, United States.
None:
New water-soluble imidazolium-based and benzenetriol-based ligands and their 3:2 ligand-to-lanthanide sandwich-type complexes, [Ln2(L1)3H2O], [Ln2(L2)3H2O], and [Ln2(L3)3H2O] (Ln = Er(III), Gd(III), and Lu(III)), were isolated. Upon 980 nm excitation, the Er(III) complexes exhibited metal-centered up-conversion emission in the solid state and in aqueous solution. When incubated in HeLa cells, the complexes appear to localize in the mitochondria, and red and green Er(III)-centered up-conversion emission was observed.
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