Chemical Scavenging Yields for Short-Lived Products from the Visible Light Photoionization of the Tris(bipyridine)ruthenium(II) Triplet Metal-to-Ligand Charge-Transfer Excited State

Alnaed Marim K.; Endicott John F.

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Chemical Scavenging Yields for Short-Lived Products from the Visible Light Photoionization of the Tris(bipyridine)ruthenium(II) Triplet Metal-to-Ligand Charge-Transfer Excited State

机译：来自Tris（Biphyridine）钌（II）三重态金属 - 配体电荷转移激发态的化学清除产量

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The rate of visible light photoionization of the tris(bipyridine)ruthenium(II) triplet metal-to-ligand charge-transfer excited state ((MLCT)-M-3) is very strongly dependent on the acid concentration in aqueous solution, and the pattern of this dependence is similar to that reported for the photoionization of iodide. With 405 nm visible irradiation of (MLCT)-M-3, less than 15% of the photoionized products appear as free solvated electrons in bulk solution, while more than 75% of the photoproducts appear to be solvent-separated, (oxidized substrate)-electron ion pairs that efficiently recombine with the photo-oxidized complex in the absence of an electron scavenger. The quantum yield of free solvated electrons generated by these 405 nm irradiations is approximately 0.004, but the net quantum yield of scavengeable electrons is estimated to be about 0.04. A visible-region photoionization threshold energy for the (MLCT)-M-3 is consistent with thermodynamic expectations, ans similar behaviour is expected for many redox-active complexes.

机译：Tris（硼吡啶）钌（II）三态聚合物金属 - 与配体电荷 - 转移激发激发态（（MLCT）-M-3）的可见光光相率非常强烈地取决于水溶液中的酸浓度，以及该依赖的模式类似于碘化物的光相的报道。具有405nm的可见辐射（MLCT）-M-3，小于15％的光相产物在散装溶液中出现作为游离溶剂的电子，而大于75％的光调节似乎是溶剂分离的（氧化衬底） - 在没有电子清除剂的情况下，可以用光氧化复合物有效重新组合的电子离子对。通过这些405nm照射产生的游离溶剂的量子产率约为0.004，但可清除电子的净量子产率估计为约0.04。（MLCT）-M-3的可见区域光离子阈值能量与热力学期望一致，预期许多氧化还原活性复合物的类似行为。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2018年第48期|共16页
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Alnaed Marim K.; Endicott John F.;
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Wayne State Univ Dept Chem Detroit MI 48202 USA;

Wayne State Univ Dept Chem Detroit MI 48202 USA;

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中图分类物理化学（理论化学）、化学物理学;
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1. Chemical Scavenging Yields for Short-Lived Products from the Visible Light Photoionization of the Tris(bipyridine)ruthenium(II) Triplet Metal-to-Ligand Charge-Transfer Excited State [J] . Alnaed Marim K., Endicott John F. The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2018,第48期

机译：来自Tris（Biphyridine）钌（II）三重态金属 - 配体电荷转移激发态的化学清除产量
2. A density functional theory and spectroscopic study of intramolecular quenching of metal-to-ligand charge-transfer excited states in some mono-bipyridine ruthenium(II) complexes [J] . Shivnath Mazumder, Ryan A. Thomas, Richard L. Lord Canadian Journal of Chemistry . 2014,第10期

机译：某些单联吡啶钌（II）配合物中金属到配体电荷转移激发态的分子内猝灭的密度泛函理论和光谱学研究
3. Are Very Small Emission Quantum Yields Characteristic of Pure Metal-to-Ligand Charge-Transfer Excited States of Ruthenium(II)-(Acceptor Ligand) Chromophores? [J] . Tsai Chia Nung, Mazumder Shivnath, Zhang Xiu Zhu, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2016,第15期

机译：钌（II）-（受体配体）发色团的纯金属-配体电荷转移激发态的极小发射量子产率特征？
4. Study of the electrochemiluminescence based on the reaction of allopurinol with Tris (2,2'-bipyridine) ruthenium (II) [C] . Yuwu Chi, JunLin Xie, Guonan Chen Sino-France Workshop on Surface Electrochemistry of Molecules of Biological Interest and Biosensor Application . 2001

机译：基于Allopurinol与Tris（2,2'-硼烷）钌（II）的反应研究电化学发光
5. The synthesis of mono-substituted disulfide-functionalized 2,2'-bipyridines and the corresponding tris(2,2'-bipyridine)ruthenium(II) complexes for self-assembled monolayers. [D] . Kumpaty, Hephzibah Jayasheela. 1996

机译：用于自组装单层的单取代二硫键官能化的2,2'-联吡啶和相应的三（2,2'-联吡啶）钌（II）配合物的合成。
6. Direct population of triplet excited states through singlet–triplet transition for visible-light excitable organic afterglow [O] . Jie Yuan, Runfeng Chen, Xingxing Tang, 2019

机译：通过单重态-三重态跃迁直接填充三重态激发态以获得可见光可激发的有机余辉
7. Are Very Small Emission Quantum Yields Characteristic of Pure Metal-to-Ligand Charge-Transfer Excited States of Ruthenium(II)-(Acceptor Ligand) Chromophores? [O] . -1

机译：是非常小的排放量子产率为纯金属 - 配体电荷转移激发型钌（II） - （受体配体）发色团的特征吗？
8. Singlet Energy Transfer from the Charge-Transfer Excited State of Tris(2,2'-bipyridine)ruthenium(II) to Laser Dyes. [R] . Mandal, K., Pearson, T. D. L., Krug, W. P., 1983

机译：从三（2,2'-联吡啶）钌（II）的电荷转移激发态到激光染料的单重态能量转移。

Chemical Scavenging Yields for Short-Lived Products from the Visible Light Photoionization of the Tris(bipyridine)ruthenium(II) Triplet Metal-to-Ligand Charge-Transfer Excited State

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