Understanding the excited metal-to-metal change transfer (MMCT) states of heterobinuclear units is vital to creating artificial photosystems.  To learn more about the metal electron transfer and to model artificial photosystems, binuclear units on silica nanoparticles were synthesized using air free techniques and coupled to bipyridine chromophores.  Particles were pressed into transparent pellets and were characterized using UV-visible and FT-IR spectroscopy.  Time-correlated single-photo counting (TCSPC) and 2D fluorescence data were collected to measure the excitation spectrum, emission yield, and lifetime of each binuclear unit/chromophore charge transfer polyad.  These data provide evidence that when the energy levels of the system are in the correct rectifying arrangement, the excited state persists to the microsecond timescale.

Time-correlated single-photon counting measurements of electron transfer between heterobinuclear units and bipyridine

2019 Spring National Meeting

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