Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 8, Issue 12, Pages 3002-3009Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201300745
Keywords
biomineralization; calcium carbonate; magnesium; molecular dynamics; organic-inorganic hybrid composites; thin films
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Funding
- Ministry of Education, Culture, Sports, Science and Technology in Japan [221070032, 2206]
- Grants-in-Aid for Scientific Research [22107004, 22107003, 22107008] Funding Source: KAKEN
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Thin-film growth of aragonite CaCO3 on annealed poly(vinyl alcohol) (PVA) matrices is induced by adding Mg2+ into a supersaturated solution of CaCO3. Both the growth rate and surface morphology of the aragonite thin films depend upon the concentration of Mg2+ in the mineralization solution. In the absence of PVA matrices, no thin films are formed, despite the presence of Mg2+. Molecular dynamics simulation of the CaCO3 precursor suggests that the transition of amorphous calcium carbonate to crystals is suppressed in the presence of Mg2+. The role for ionic additives in the crystallization of CaCO3 on organic templates obtained in this study may provide useful information for the development of functional hybrid materials.
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