Hole-burning and resonant luminescence line-narrowing of [Rh(phpy)2bpy]+ in glassy matrices

✍ Scribed by Hans Riesen; Elmars Krausz; Arne Zilian; Hans U. Güdel

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 303 KB
• Volume: 182
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(91)80214-i

✦ Synopsis

Persistent hole-burning of the triplet ligand-centred state in [Rh(phpy)2bpy]' in organic glasses is reported. In the scanning range of ? 3.8 GHz, no sideholes could be detected. From luminescence-line-narrowing and hole-burning experiments in moderate external magnetic fields of up to 0.83 T, it is concluded that the zero-field splitting is in the range of 9 2 3 GHz but not correlated. At 4.2 K, the components of the triplet state are not thermalised, even in a field of 0.83 T. Homogeneous linewidths of 0.35 GHz and 0.8 GHz are deduced for the glycerol glass at 2. I K and the ethanol: methanol 4: I (v/v) glass at I 6 K, respectively.