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S. ARORA1,* , S. KUMAR1
Guest–host blends with dipolar chromophore, namely N-(4-benzoylphenyl)-2-methylacrylamide (4-BPMA) as guest and polymethylmethacrylate (PMMA) as host have been prepared and characterized by thermal and spectroscopic techniques. The prepared guest-host systems were found to be thermally stable with decomposition temperature within the range 309- 327°C as determined by TGA. Thin films of these guest-host blends prepared by vacuum deposition techniques were corona-poled for the alignment of dipolar chromophores. Band gaps of guest-host blend thin film were found in the range 3.38-3.43 eV, indicating their insulating behaviour. The effect of poling voltage and poling temperature on poling efficiency was studied by UV/Vis spectroscopy. The temporal stability of aligned dipoles has also been investigated by studying the UV/Vis absorption spectra of polymeric thin films at different time-intervals.
Dipolar chromophore, Guest-host blend, Thin films, Optical study, Orientational stability.
S. ARORA, S. KUMAR, Corona-poling of 4-BPMA/PMMA guest-host polymeric thin films, Optoelectronics and Advanced Materials - Rapid Communications, 1, 8, August 2007, pp.410-414 (2007).
Submitted at: April 28, 2007
Accepted at: July 8, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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