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(A) Structures of heterogeneous macrocycles. (B) UV-vis spectra of H20, H23 and photoluminescence spectra of H3. (C) Normalized photoluminescence spectra of H20, H21, H22 and H23. (D) Photoluminescence spectra of H20, H21 and H22. (E) Time-resolved PL decay of fluorenone monomer, H20, H21 and H22. Reproduced from ref. [152] with permission from the Royal Society of Chemistry.
