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Morphosynthesis of Octacalcium Phosphate Hollow Microspheres by Polyelectrolyte‐Mediated Crystallization
Author(s) -
Bigi Adriana,
Boanini Elisa,
Walsh Dominic,
Mann Stephen
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020617)41:12<2163::aid-anie2163>3.0.co;2-g
Subject(s) - octacalcium phosphate , polyelectrolyte , crystallization , microsphere , phosphate , chemical engineering , materials science , chemistry , engineering , composite material , organic chemistry , polymer
Spheres without templates : The direct assembly of a complex inorganic polymer with a spherical‐shell architecture (see electron microscopy image) was obtained by addition of polyacrylate or polyaspartate during the crystallization of octacalcium phosphate from aqueous solutions. The process does not require the intervention of external templates, and involves the radial growth of dense multilayered spheroids, secondary overgrowth of a porous thin‐shell precursor, and anisotropic dissolution of the spheroidal cores.