Simultaneous two-photon excited fluorescence and one-photon excited phosphorescence from single molecules of an organometallic complex Ir(ppy)3.
Simultaneous two-photon excited fluorescence and one-photon excited phosphorescence from single molecules of an organometallic complex Ir(ppy)3.
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DOI：
10.1021/ja0616635
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发表时间：
2006-08
影响因子：
15
通讯作者：
Yohei Koide;Susumu Takahashi;M. Vacha
中科院分区：
文献类型：
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作者：
Yohei Koide;Susumu Takahashi;M. Vacha
我们报告了磷光有机金属配合物 Ir(ppy)3 在整体和单分子水平上的激发态寿命的研究。随着浓度的降低，在 1.1 mu 磷光旁边出现了 3 ns 寿命的越来越强的快速分量。实验证据表明，强烈的双光子吸收和随后的荧光是造成快速寿命成分的原因。
We report a study of excited-state lifetimes of the phosphorescent organometallic complex Ir(ppy)3 on ensemble and a single-molecule level. With decreasing concentration, an increasingly intense fast component of 3 ns lifetime appears next to the 1.1 mus phosphorescence. Experimental evidence suggests that strong two-photon absorption followed by fluorescence is responsible for the fast lifetime component.