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. 2015 Nov 10;5:16420. doi: 10.1038/srep16420

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(a) PL spectra of 1 in THF (20 μM) with addition of F⁻ upon excitation at 365 nm. (b) Luminescent intensity of 1 in THF upon the addition of various anions (40 eq.). (c) ¹H NMR spectral changes for 1 before and after addition of F⁻.