Temperature-dependent lifetimes, MCPL and shifts of the luminescence in the materials [Ru(bpy)x(bpy-d8)3-x]2+, x=0–3, in dilute systems

✍ Scribed by Elmars Krausz; Grainne Moran; Hans Riesen

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 556 KB
• Volume: 165
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(90)85449-m

✦ Synopsis

Luminescence decay kinetics of the title series, measured after quasi-steady-state excitation, are found to be first order under all conditions. The decay rates of the X= 1 and 2 partially deuterated complexes are approximately evenly spaced between the x=0 and X= 3 values. Luminescence profiles are almost identical for the series, but with the low-temperature x=0 luminescence shifted z 40 cm-' to higher energy relative to the x= 1,2, 3 spectra. MCPL magnitudes were found to be unaffected by deuteration. Analysis ofthe temperature dependence of the lifetimes in poly(viny1 alcohol) indicates an 8.2? 0.2 cm-' lowest energy gap for all four complexes, which is consistent with the zero-phonon line separations in single crystals of the PF,, salts.