Indirect consequences of exciplex states on the phosphorescence lifetime of phenazine-based 1,2,3-triazole luminescent probes.

Indirect consequences of exciplex states on the phosphorescence lifetime of phenazine-based 1,2,3-triazole luminescent probes.
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激基复合物状态对吩嗪基 1,2,3-三唑发光探针磷光寿命的间接影响。

DOI:
10.1039/c6cp06134f
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发表时间:
2017
期刊:
PCCP
影响因子:
--
通讯作者:
Costa BB
Costa BB
中科院分区:
--
文献类型:
--
作者:
Costa BB

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用时间分辨光谱学方法研究了吩嗪衍生物探针溶液从单态到三态的光学性质。当Cd~(2+)离子与探针化学结构结合时,其室温磷光发射呈现不同的时间响应。在这种情况下观察到的复杂激基缔合物的形成并不直接导致磷光寿命的变化。这更多地受到了新的分子构象和由Cd~(2+)离子与吩嗪分子结合而产生的修饰的自旋-轨道耦合的影响。
The optical properties of phenazine derivative probe solutions involving intersystem crossing from singlet to triplet states were investigated by time resolved spectroscopy. The room temperature phosphorescence emission presented different time responses when Cd2+ ions were bound to the probe chemical structure. The complex exciplex formation observed to occur in this case was not directly responsible for the change in the phosphorescence lifetime. This was more influenced by the new molecular conformation and modified spin–orbit coupling imposed by the binding of the Cd2+ ions to the phenazine molecules.
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