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Organic Sol–Gel Synthesis: Solution‐Processable Microporous Organic Networks
Author(s) -
Moon SuYoung,
Bae JaeSung,
Jeon Eunkyung,
Park JiWoong
Publication year - 2010
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.201002609
Subject(s) - microporous material , condensation polymer , materials science , sol gel , chemical engineering , nanoparticle , nanotechnology , polymer chemistry , polymer science , organic chemistry , chemistry , polymer , engineering
Concentration is critical : Amine/isocyanate polycondensation below the critical gelation concentration c g affords a sol of growing microporous molecular‐network nanoparticles rather than a gelated network (see picture, for model of particle: NCO red, NH 2 blue, tetrahedral cross‐link point gray). Further growth to form monolithic networks occurs on solvent evaporation, analogous to sol–gel synthesis of inorganic oxide networks.