NDLI: The effect of preparation process of PMDA–ODA–DR1 polyimide on its second harmonic generation characteristics

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The effect of preparation process of PMDA–ODA–DR1 polyimide on its second harmonic generation characteristics

Content Provider	Semantic Scholar
Author	Chang, Chi-Jung Whang, Wha-Tzong Huang, J. Y. Liao, Chueng-Liang Liu, Jonq-Min
Copyright Year	1995
Abstract	SYNOPSIS In situ second harmonic generation (SHG) observation of PMDA-ODA-DR1 polyimide films prepared by different preparative procedures were studied to understand the effects of the residual acid and the imidization byproduct and the extent of imidization on the SHG characteristics of the PMDA-ODA-DR1 polyimides. PMDA-ODA-DR1 polyimides with or without removal of salt were also investigated to study the influence of remaining triethyl hydrogen ammonium chloride salt on the SHG characteristics and reliability of the polymers. A blue shift in the UV/vis spectrum during poling was observed for the lowtemperature-baked film, but did not occur for the high-temperature-baked film. Both hightemperature imidization and removal of the byproduct organic salt did not only improve the poling efficiency of PMDA-ODA-DR1 polyimide as a SHG material, but also slowed down the relaxation of the film and made the film more reliable. 0 1995 John Wiley & Sons, Inc.
Starting Page	1625
Ending Page	1634
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1002/app.1995.070561213
Volume Number	56
Alternate Webpage(s)	https://ir.nctu.edu.tw/bitstream/11536/1855/1/A1995QY97300013.pdf
Alternate Webpage(s)	https://doi.org/10.1002/app.1995.070561213
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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