Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5397518 | Journal of Luminescence | 2017 | 6 Pages |
Abstract
In this work, poly(methyl methacrylate) (PMMA) thin films and a polymer optical fiber doped with pyrromethene (PM-567) were fabricated and characterized. The obtained films were uniform and homogeneous in its central zone and no aggregation of dye molecules were observed. UV-vis absorption, photoluminescence spectra, lifetime and photodegradation were measured for the fabricated films. Peak intensity and position of the photoluminescence spectra were dependent on the pyrromethene concentration. A resonant energy transfer mechanism is proposed as the main process associated with this behavior. Photodegradation results were well fitted by a gamma probability density function. While thin films were highly degraded under 405Â nm excitation, the studied optical fiber displayed a much more stable behavior, presumably related with its construction design based on a transparent core and a thin PM-567 doped cladding.
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Chemistry
Physical and Theoretical Chemistry
Authors
R. Narro-GarcÃa, L. Jaramillo-Ochoa, M.A. Ocampo, R. Quintero-Torres,