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allen2009

至尊木虫 (著名写手)

[求助] 分子的单线态和三线态激发态能量模拟计算已有1人参与

如题。请高手指教如何进行命令的编写来计算有机小分子的单线态(S1)和三线态(T1)激发态能量。本人做发光材料的。现在用的是高斯软件通过SSH Secure Shell Client上传到单位服务器进行计算。
看一些文献有如下的说明,
Quantum chemical calculations. All calculations were performed using the
Gaussian 09 program package. The geometries in the ground state were optimized
via DFT calculations at the B3LYP/6-31G* level. Vertical absorption energies (EVA)
were calculated based on TD-DFT with the B3LYP, PBE0, MPW1B95, BMK, M06-
2X and M06-HF functionals using 6-31G* basis sets. The calculated EVA(S1)
corresponding to LE or CT transitions were distinguished by orbital transition
analyses. Based on the relationship between q and the optimal HF% (OHF), that is,
OHF ¼ 42q, EVA(1CT, OHF) was read from the fitted straight line of the EVA(1CT)–
HF% points plotted on a log–log scale (Supplementary Fig. 2), and E0–0(1CT) was
obtained using a common gap of 0.24 eV between E0–0(1CT) and EVA(1CT, OHF).
Furthermore, by looking at the change in EVA(S1)–EVA(T1) with HF%, we
distinguished the EVA(T1) points corresponding to the 3CT or 3LE transitions and
calculate E0–0(3CT) and E0–0(3LE) from them, respectively (Supplementary Fig. 2
and Table 1). For more details on the calculations of CT amount (q), optimal HF%,
E0–0(1CT), E0–0(3CT) and E0–0(3LE), see our previous report30.
水平低,看不懂。
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wbf3ng

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gmy1990: 金币+1 2015-02-07 20:16:27
opt td(50-50,nstates=10,root=1) b3lyp/lanl2dz ,看看手册看看网上的贴就知道了。数据的讨论在知识的功底。

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