Cationic and anionic environments in LiTFSI-doped di-ureasils with application ...

• Author(s): Nunes, Sílvia ; Zea Bermudez, V. de ; Ostrovskii, David ; Carlos, Luís ; Silva, Maria Manuela ; Smith, Michael John
• Date: 2007
• Persistent ID: http://hdl.handle.net/1822/7842
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Di-ureasils; Sol-gel; LiTFSI; FTIR
• Document Type: Article
• Language: English

Description

FTIR and Raman spectroscopies were used to investigate the cation/polymer, cation/urea bridge, cation/anion and hydrogen bonding interactions in poly(ethylene oxide)/siloxane di-ureasil networks prepared by the sol-gel route and doped with LiTFSI. Materials with compositions 200>n>5 (where n expresses the molar ratio of OCH2CH2/Li+) were studied.