Assembly of Aqueous-Cored Calcium Phosphate Nanoparticles for Drug Delivery

A synthesis strategy for aqueous-cored calcium phosphate nanoparticles is presented that combines ease of preparation, reproducibility, size control, stability, and mean thickness control. Suspension stability and shell thickness control were achieved through the introduction of a “capping” molecule...

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Bibliographic Details
Published in:Chemistry of materials 2004-11, Vol.16 (24), p.4942-4947
Main Authors: Schmidt, Hartley T., Gray, Ben L., Wingert, Philip A., Ostafin, Agnes E.
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
General and physical chemistry
Physicochemistry of polymers
Physics
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Summary:A synthesis strategy for aqueous-cored calcium phosphate nanoparticles is presented that combines ease of preparation, reproducibility, size control, stability, and mean thickness control. Suspension stability and shell thickness control were achieved through the introduction of a “capping” molecule, carboxyethylphosphoric acid (CEPA). Using this method, suspensions of calcium phosphate shells were produced with a size distribution of 120−185 ± 50 nm and predictable mean shell thickness from 10 to 40 nm that were stable up to a month, even in the presence of 200 mM salt and 2.5 g/dL albumin.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm040056i