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Facile Fabrication of Nanocellular Block Copolymer Thin Films Using Supercritical Carbon Dioxide
Author(s) -
Li L.,
Yokoyama H.,
Nemoto T.,
Sugiyama K.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400264
Subject(s) - materials science , supercritical carbon dioxide , copolymer , supercritical fluid , fabrication , chemical engineering , thin film , carbon dioxide , saturation (graph theory) , nanotechnology , organic chemistry , composite material , polymer , chemistry , medicine , alternative medicine , mathematics , pathology , combinatorics , engineering
A novel, facile, and reproducible method of fabricating nanocells in thin films (see Figure) has been developed using a fluorinated block copolymer with a supercritical carbon dioxide (scCO 2 ) soluble block as a template. The nanocells have an average spacing of 34 nm and a number density of 9 × 10 10 cm –2 . The size of nanocellular structures is readily tunable by changing the saturation pressure of scCO 2 .