Luminescent Pt(II) metal organic complexes have a rich and complex photophysics.  An attractive feature is that the emission energy is tunable due to ligand substitution.  This allows for the design of different color phosphors.  Additionally the formation of aggregates typically shifts the emission energy to lower energy relative to the monomer's luminescence in solution.  Aggregate formation occurs in the solid-state, both in crystalline samples and in optically transparent solid solutions (a film of the phosphor doped in an organic glass or polymer).  Surprisingly, the photophysics is often different between a single crystal, a solid solution, and/or a dilute liquid solution of the same compound �not only does the emission energy change, but so does the vibronic structure. A series of Pt(N^C)(O^O) complexes where N^C is a monoanionic cyclometallated ligand (e.g. 2-phenylpyridine) and O^O is either acac or a deprotonated 9-hydroxyphenalenone (Hpal) are investigated comparing their solution and solid-state photophysical properties.    

Modeling the photophysics of luminescent organometallic platinum(II) phosphors

247th National Meeting (2014)

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