Premium
Synthesis and second harmonic generation studies of nlo‐functionalized polyimides
Author(s) -
Shim HongKu,
Yoon ChongBok,
Woo Han Young
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.19991420106
Subject(s) - polyimide , thermal stability , materials science , mitsunobu reaction , polymer chemistry , second harmonic generation , chemical engineering , organic chemistry , chemistry , nanotechnology , physics , optics , layer (electronics) , laser , engineering
Several NLO‐functionalized polyimides were synthesized through novel synthetic pathways and their NLO properties were characterized. For preventing the disadvantage in poly(amic acid) precursor route, the Mitsunobu reaction and alternative synthetic route for NLO polyimides were chosen. The second‐order NLO coefficients (χ (2) ) of the synthesized polyimides were between 48pm/V and 122pm/V. The thermal stability of nonlinearity characterized showed that all polyimide films retain their NLO activities at temperatures below 100°C.