Photoemission phosphorescence

Although the photoemission profile was broad, the UV-vis absorption and photoexcitation spectra (Xex = 360 nm) suggested that this was not due to dd phosphorescence. This was corroborated by pulsed laser time-resolved measurements, which revealed a variable, biexponential fluorescent decay with essentially a nanosecond time regime—for example, at the emission peak (442 nm), Xi = 0.44 ns (74%) and %2 = 1-1 ns (26%). Measurements in MeTHF glass at 77 K exposed dual-fluorescent singlet manifolds, with a higher-energy violet emission at = 405 nm (x, = 0.18 ns (92%)... 

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