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Crystalline, Porous Microspheres Made from Amino Acids by Using Polymer‐Induced Liquid Precursor Phases
Author(s) -
Wohlrab Sebastian,
Cölfen Helmut,
Antonietti Markus
Publication year - 2005
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/anie.200462467
Subject(s) - ostwald ripening , crystallization , polymer , precipitation , polyelectrolyte , chemical engineering , porosity , amino acid , lysine , crystal (programming language) , chemistry , microsphere , materials science , crystallography , polymer chemistry , nanotechnology , organic chemistry , computer science , physics , biochemistry , meteorology , engineering , programming language
Precipitation of charged amino acids in the presence of oppositely charged polyelectrolytes leads to liquid droplets of the corresponding polymer/amino acid complexes in water. The resulting emulsions are stable against crystallization and Ostwald ripening for several months but can also be used as a starting situation for crystallization of spherical, porous crystal superstructures (see SEM image of L ‐lysine).