Crosslinking ionic oligomers as conformable precursors to calcium carbonate

Area of Science:

• Materials Science
• Inorganic Chemistry
• Polymer Chemistry

Background:

• Inorganic materials are vital for construction, optics, engineering, and biomaterials.
• Classical crystallization methods often yield powders, limiting the creation of continuous inorganic structures.
• Existing non-classical crystallization precursors have limitations in large-scale monolith preparation.

Purpose of the Study:

• To develop a novel method for constructing continuously structured inorganic materials.
• To overcome limitations of current precursors for large-scale monolith preparation.
• To adapt polymer crosslinking principles for inorganic material synthesis.

Main Methods:

• Synthesized calcium carbonate (CaCO3) oligomers ((CaCO3)n) with controlled molecular weights using triethylamine as a capping agent.
• Initiated crosslinking of the oligomers by removing the triethylamine capping agent.
• Demonstrated the processability of the fluid-like oligomer precursor for molding complex shapes.

Main Results:

• Successfully produced pure monolithic calcium carbonate and single crystals with continuous internal structures.
• Achieved rapid construction of inorganic materials through oligomer crosslinking.
• Showcased the ability to mold the precursor into complex and variable morphologies.

Conclusions:

• Introduced a new strategy for inorganic material construction by crosslinking ionic oligomers.
• Fused principles of inorganic and polymer chemistry for material manufacturing.
• Enabled the scalable and versatile production of continuously structured inorganic materials.