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. Author manuscript; available in PMC: 2019 Jun 20.
Published in final edited form as: J Am Chem Soc. 2018 Jun 5;140(24):7723–7729. doi: 10.1021/jacs.8b04452

Figure 4.

Figure 4.

(a) Absorption spectra of L1, M1 and M2 in THF. (b,c,d) Normalized emission spectra of (b) L1, (c) M1, and (d) M2 in different solvents. (λex = 370 nm, c = 2.0 × 10−5 M for L1; λex = 400 nm, c = 2.0 × 10−6 M for M1 and M2).