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Molecular Shapes

Molecular Shapes

Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...

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Updated: Mar 21, 2026

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

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Template-based syntheses for shape controlled nanostructures.

María Pérez-Page¹, Erick Yu², Jun Li¹

¹Department of Chemical Engineering, University of California Davis, Davis, CA, 95616, United States.

Advances in Colloid and Interface Science

|May 8, 2016

Summary

Template-based synthesis offers precise control over nanostructured materials, enabling tailored properties for diverse applications. This review highlights templates, synthesis routes, and uses of these advanced nanomaterials.

Keywords:

Nanoporous membrane templates Nanostructured materials Template-based synthesis Template-filling methods

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Area of Science:

Materials Science
Nanotechnology
Chemical Engineering

Background:

Nanostructured materials exhibit unique properties influenced by their size and shape.
Template-based synthesis is a key method for controlling these characteristics.
Diverse nanostructures (0D, 1D, 2D) like nanoparticles and nanosheets can be fabricated.

Purpose of the Study:

To review template-based synthesis methods for nanostructured materials.
To emphasize the role of templates and synthesis routes in material properties.
To highlight applications of template-synthesized nanomaterials.

Main Methods:

Discussion of various templates: organic agents, surfactants, polymers, carbon frameworks, sol-gels, inorganic frameworks, and nanoporous membranes.
Review of synthesis methods: emulsion-based routes, template-filling (self-assembly, electrodeposition, vapor deposition), layer-by-layer, and lithography.
Categorization of nanostructures by dimensionality (0D, 1D, 2D).

Main Results:

Template selection allows fine control over nanomaterial shape and size.
Specific templates and synthesis routes yield distinct nanostructures.
Template-based synthesis enables property tuning for targeted applications.

Conclusions:

Template-based synthesis is crucial for producing well-defined nanostructured materials.
The choice of template and method directly impacts material properties and applications.
These nanomaterials have significant potential in fields like solar energy, thermoelectrics, catalysis, and biomedicine.