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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >One- and Two-Photon Spectra of Platinum Acetylide Chromophores: A TDDFT Study
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One- and Two-Photon Spectra of Platinum Acetylide Chromophores: A TDDFT Study

机译:乙炔化铂发色团的一光子光谱和两光子光谱:TDDFT研究

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摘要

We report one- (OPA) and two-photon absorption (TPA) excitation energies and cross-sections for a series of platinum acetylides using time-dependent density functional theory. Because of the facile rotations of the trimethylphosphinyl and phenylene groups, we apply a Boltzmann-weighted average over thermally accessible conformations to obtain the final spectra, resulting in better agreement with experimental observations. We examine various basis sets and functionals to evaluate their performance in the gas-phase and in solution. Effects of donor and acceptor groups on the OPA and TPA resonances and intensities are also discussed.
机译:我们报告了使用时间依赖的密度泛函理论的一系列铂乙炔的一个(OPA)和两个光子吸收(TPA)激发能和截面。由于三甲基次膦基和亚苯基的旋转容易,我们在热可及的构象上应用了玻尔兹曼加权平均值来获得最终光谱,从而与实验观察结果更好地吻合。我们研究了各种基础集和功能,以评估它们在气相和溶液中的性能。还讨论了供体和受体基团对OPA和TPA共振和强度的影响。

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