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Preparation and photophysics of polyimide/silica organic/inorganic hybrid composites
Author(s) -
Ha ChangSik,
Cho WonJei
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991420120
Subject(s) - polyimide , bpda , materials science , intermolecular force , intramolecular force , composite number , fluorescence , hybrid material , fluorescence spectroscopy , luminescence , spectroscopy , composite material , polymer chemistry , molecule , chemistry , organic chemistry , nanotechnology , physics , layer (electronics) , quantum mechanics , optoelectronics
In this work, polyimide/silica hybrid composites were prepared by the sol‐gel reaction of tetraethoxysilane(TEOS) and the thermal imidization of poly(amic acid) from 3,3′,4,4′‐biphenyltetracarboxylic dianhydride(BPDA) and 4,4′‐oxydianiline(ODA), and their photophysical properties were investigated using a fluorescence spectroscopy. It was found that the intrinsic fluorescence of poly(4,4′‐oxydiphenylene‐3,3′4,4′‐biphenyltetracarboximide)(BPDA‐ODA) such as emission intensity and emission wavelength depends strongly on the changes in the molecular conformations during the sol‐gel reaction and the thermal imidization. In conclusion, we found that the fluorescence spectroscopy can provide an insight into how the intermolecular or intramolecular interaction of polyimide in the hybrid composite system is affected by the silica contents, depending on the sample states.