Quantum Chemical Design Guidelines for Absorption and Emission Color Tuning of fac-Ir(ppy)₃ Complexes.

Quantum Chemical Design Guidelines for Absorption and Emission Color Tuning of fac-Ir(ppy)₃ Complexes.
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DOI:
10.3390/molecules23030577
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发表时间:
2018-03-05
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Nakano M
Nakano M
中科院分区:
其他
文献类型:
--
作者:
Natori Y;Kitagawa Y;Aoki S;Teramoto R;Tada H;Era I;Nakano M

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fac-Ir(ppy)3配合物,其中ppy表示2-苯基吡啶,是众所周知的具有高量子产率的发光金属配合物之一。然而,目前还没有针对颜色调节的具体分子设计指南。例如,目前还不清楚当改变配体的取代基时其光学性质如何改变。因此,在本研究中,通过密度泛函理论(DFT)和瞬态DFT(TD-DFT)计算详细研究了几种取代的fac-Ir(ppy)3衍生物之间电子结构和光学性质的差异。基于这些结果,我们提出了通过修改取代基种类及其取代位置来调节吸收和发射颜色的合理设计指南。
The fac-Ir(ppy)3 complex, where ppy denotes 2-phenylpyridine, is one of the well-known luminescent metal complexes having a high quantum yield. However, there have been no specific molecular design guidelines for color tuning. For example, it is still unclear how its optical properties are changed when changing substitution groups of ligands. Therefore, in this study, differences in the electronic structures and optical properties among several substituted fac-Ir(ppy)3 derivatives are examined in detail by density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations. On the basis of those results, we present rational design guidelines for absorption and emission color tuning by modifying the species of substituents and their substitution positions.
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