Journal
LANGMUIR
Volume 32, Issue 35, Pages 8999-9004Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.6b01594
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Funding
- Fundamental Research Funds for the Central Universities
- National Natural Science Foundation of China [21571155]
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Aggregation-based crystal growth is distinct from the classical understanding of solution crystallization. In this study, we reveal that N-stearoyl-L-glutamic acid (C-18-Glu, an amphiphile that mimics a biomineralization-relevant biomolecule) can switch calcite crystallization from a classical ion-by-ion growth to a non-classical particle-by-particle pathway, which combines the classical and non-classical crystallization in one system. This growth mechanism change is controlled by the concentration ratio of [C-18-Glu]/[Ca2+] in solution. The high [C-18-Glu]/[Ca2+] can stabilize precursor nanoparticles to provide building blocks for aggregation-based crystallization, in which the interaction between C-18-Glu and the nanoprecursor phase rather than that of C-18-Glu on calcite steps is highlighted. Our finding emphasizes the enrollment of organic additives on metastable nano building blocks, which provides an alternative understanding about organic control in inorganic crystallization.
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