As a molecular modeler, have you ever spent countless hours trying to build complex molecular systems atom by atom? The frustration of piecing together intricate fragments while ensuring structural accuracy is a common challenge. Thankfully, SAMSON offers a powerful and intuitive solution: using its Asset Browser to streamline your molecular building.
The Asset Browser in SAMSON is an invaluable tool that enables users to access a rich library of molecular fragments and assets. Fragments can range from individual atoms and functional groups to rings, nanoparticles, and complex 2D materials like graphene sheets. Let’s delve into how the Asset Browser can revolutionize your workflow and save you time.
Why Use the Asset Browser?
The Asset Browser is designed to simplify and accelerate molecular construction. Available by default within SAMSON, it allows you to:
- Access predefined molecular fragments and assets.
- Quickly search for specific fragments using the “Filter assets…” feature.
- Switch between grid and list views for a customized experience.
- Easily resize text and images to suit your display preferences.

Constructing with Fragments
Building with fragments is straightforward. For example, to create a structure using the phenol molecule:
- Open the Asset Browser and navigate to the Aromatics folder.
- Select and double-click the phenol asset to activate it in the Viewport.
- Click anywhere in the Viewport to add the phenol molecule to your workspace. Use techniques such as bond connections or atom substitution to connect additional phenol fragments.
The tool offers smart interaction, preventing incorrect substitutions by displaying green overlays for acceptable substitutions and red overlays for forbidden ones. You can also activate interactive minimization to naturally align and optimize the structure in real-time.

Taking Asset Usage to the Next Level
Need to modify the default configuration of an asset? SAMSON allows you to change the substitution atom in a fragment. Simply press Ctrl (or Cmd on macOS) and select the desired substitution atom within the fragment. This flexibility ensures that your molecular designs meet specific requirements, as demonstrated in the gif below:

Combining Interactivity with Preferences
The builder tools in SAMSON also empower users to customize their construction process further by tweaking preferences. Options such as Adjust hydrogens when adding fragments, Prevent unexpected substitutions, and Merge neighboring atoms provide robust configuration settings tailored to your project’s needs.
For example, you can:
- Enable structure validation to prevent implausible molecular formations.
- Opt for randomized fragment orientations to mimic realistic molecular arrangements.
Wrap Up
Efficient molecular modeling requires the right tools, and the Asset Browser in SAMSON stands out as a game-changer. Whether you’re a novice or an experienced modeler, this feature ensures precise, efficient, and intuitive molecular construction. To learn more about building molecules and using the Asset Browser, visit the full documentation page: SAMSON Building Molecules Documentation.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can get SAMSON at this link.
