<div dir="ltr"><div>Hi,</div><div><br></div><div>You might want to go through this paper: <a href="https://pubs.acs.org/doi/pdf/10.1021/jp3060944">https://pubs.acs.org/doi/pdf/10.1021/jp3060944</a>.</div><div>They perform AIMD for a chromophore of fluorescent proteins which is electrostatically embedded in the protein environment<br></div><div>so they must also account for vdW interaactions between QM and MM subsystems at LJ model. <br></div><div>They compare using both BLYP and BLYP+D3 for QM region, so it should be fine. They also use CP2K.</div><div>Best wishes,</div><div>Dawid<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">wt., 2 mar 2021 o 11:02 Amami Haruka <<a href="mailto:amami...@gmail.com">amami...@gmail.com</a>> napisał(a):<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">When running AIMD, I usually add DFT-D3(BJ) dispersion correction to account for the lack of dispersion when running at the level of BLYP/TZVP-MOLOPT-GTH.<div><br></div><div><div>&VDW_POTENTIAL</div><div> POTENTIAL_TYPE PAIR_POTENTIAL</div><div> &PAIR_POTENTIAL</div><div> PARAMETER_FILE_NAME dftd3.dat</div><div> TYPE DFTD3(BJ)</div><div> REFERENCE_FUNCTIONAL BLYP</div><div> &END PAIR_POTENTIAL</div><div> &END VDW_POTENTIAL</div></div><div><br></div><div>However, I wonder if I would still need DFT-D3(BJ) during QM/MM calculation? The dispersion between the QM region and the MM region or between the atoms in the MM region is taken into account by Lennard-Jones potential.</div><div>For cp2k, is the dispersion between the atoms in the QM region taken into account by the Lennard-Jones potential, or one would need to add dispersion correction via DFT-D3(BJ)?</div><div>Thank you.</div>
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