Universität Regensburg, Institut für Physikalische und Theoretische Chemie, Universitätstr. 31, D-93040 Regensburg, Germany.
Dalton Trans. 2013 Jul 21;42(27):9826-30. doi: 10.1039/c3dt51006a. Epub 2013 May 31.
The rigid Cu(dmp)(phanephos) complex displays a high luminescence quantum yield of 80% at ambient temperature. In contrast to the long-lived phosphorescence of 240 μs at T < 120 K with a radiative rate of k(r) = 3 × 10(3) s(-1), the ambient-temperature emission represents a thermally activated delayed fluorescence (DF) with a decay time of only 14 μs and a radiative rate of k(r)(DF) = 6 × 10(4) s(-1). Evidence for the involvement of the excited singlet state in the emission process is presented. This material has high potential to be applied in efficient OLEDs taking advantage of the singlet harvesting mechanism.
刚性 Cu(dmp)(phanephos) 配合物在环境温度下显示出 80%的高光致发光量子产率。与在 T < 120 K 时具有 240 μs 长磷光寿命和辐射速率 k(r) = 3 × 10(3) s(-1)的磷光相反，环境温度下的发射代表具有仅 14 μs 衰减时间和辐射速率 k(r)(DF) = 6 × 10(4) s(-1)的热激活延迟荧光 (DF)。提出了参与发射过程的激发单线态的证据。由于利用单重态俘获机制，这种材料在高效 OLED 中有很高的应用潜力。
