Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 269, Issue -, Pages 388-393Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2017.11.048
Keywords
PMMA; Methyl violet-6B; Polymeric composite films; Wide scale CUT-OFF laser filters; Optical constants; Band gap; Optical limiting effect
Funding
- Deanship of Scientific Research, King Saud University
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Poly(methyl methacrylate) (PMMA) doped with different weight percent of methyl violet-6B (MV-6B) as polymeric films were prepared by a casting method. Different concentrations of MV-6B can affect both the crystal structure and optical properties of PMMA. The broad hump diffraction peaks present in PMMA at 2 theta = 15.27 degrees, 30.60 degrees, and 40.69 degrees are ascribed to amorphous PMMA. During the incorporation of MV-6B dye onto PMMA, the intense peaks of PMMA at the 2 theta value of 15.27 degrees and 30.6 degrees became less intense, and D theta-spacing was changed. The X-ray results confirmed the strong electrostatic interaction of the cationic MV-6B dye with the anionic PMMA polymer. Furthermore, the transmittance of PMMA/MV-6B composites is decreased with the increase of MV-6B dopants concentrations onto the PMMA matrix; this may be attributed to the electrostatic interaction between the PMMA chains and the molecules of methyl violet-6B. MV-6B-doped PMMA possesses three distinct band gaps corresponding to the pure PMMA, and other two band gaps are for the MV-6B/PMMA composite films. PMMA/MV films with 3.333 wt% of MV-6B) showed a large scale CUT-OFF laser filter inside in the range from 190 to 670 nm. Our designed filter is a unique polymeric composite film for optoelectronic and laser applications. (C) 2017 Elsevier B.V. All rights reserved.
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