Extension of the MolMod Database to Transferable Force Fields

Area of Science:

• Computational chemistry
• Materials science

Background:

• Classical force fields are essential for molecular simulations of fluids.
• Existing databases may lack comprehensive support for transferable force fields.

Purpose of the Study:

• To extend the MolMod database with a wider range of transferable force fields.
• To enhance the usability of MolMod for molecular simulations by including a molecule builder and direct output for simulation engines.

Main Methods:

• Implementation of eight transferable force fields (OPLS-UA, OPLS-AA, COMPASS, CHARMM, GROMOS, TraPPE, Potoff, TAMie) into the MolMod database.
• Development of a graphical user interface for molecule construction.
• Integration of data and metadata compilation for specified force fields and molecule types.

Main Results:

• The MolMod database now supports multiple transferable force fields covering diverse chemical classes.
• Users can now construct molecules via a GUI and obtain ready-to-use input files for various simulation engines.
• The system facilitates flexible selection and rapid integration of molecular models.

Conclusions:

• The enhanced MolMod database streamlines the process of setting up molecular simulations.
• Increased accessibility to transferable force fields and user-friendly tools reduce potential input errors.
• This development supports broader adoption and efficiency in computational chemistry workflows.