The luminescence decay curves of the dimers obtained from complexation were obtained using a pico-TAS system from UNISOKU (Hirakata city, Osaka, Japan). Excitation light with a wavelength of 520 nm was used. Prior to the measurements, the solutions were deoxygenated by argon bubbling. The primary objective of the measurement was to observe the photoinduced charge transfer behavior of the BB cluster. The Fe 2+ terpyridine complex ([Fe(TpyPhC2H)2](BF4)2, hereafter referred to as 3•(BF4 -)2 (Table , Fig. ), was used as the quenching agent to quench the luminescence of the Au13 component.