Fig. 6: Comparison of 1 and 3 in structure, absorption and emission spectra.

a, b are the structure of [Au28(p-MBT)14(Hdppa)3]2+ and Au30S(S-t-Bu)18, respectively. The phenyl and alkyl group of thiolate and phosphenlate ligands are omitted to clarify. Color labels: orange/green, Au atoms; yellow, S atoms; pink, P atoms; dark blue, N atoms. c The optical absorption spectra of 1 (red trace) and 3 (blue trace) in CH2Cl2. d The emission spectrum of 3 in CH2Cl2. Source data are provided as a Source Data file.