Authors:
José Roberto Tozoni
;
Alexandre Marletta
;
Adryelle do Nascimento Arantes
and
Luana Rodrigues de Oliveira
Affiliation:
Federal University of Uberlandia, Brazil
Keyword(s):
Host/Guest, Polymer Blend, Poly(Methyl Methacrylate), Poly[2-Methoxy-5-(2-Ethylhexyloxy)-1,4-Phenylenevinylene], Photoemission, Long Time Exposure Blue-light Dosimeter.
Related
Ontology
Subjects/Areas/Topics:
Photodetectors, Sensors and Imaging
;
Photonics
;
Photonics, Optics and Laser Technology
Abstract:
In the present paper the photoemission intensity versus excitation exposure time of host/guest
photoluminescent polymer blend has been investigated. The polymer blend was composed by poly(methyl
methacrylate) (PMMA) as a host, and Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV)
as a guest. The photoluminescent blend was characterized by optical absorbance and steady-state
photoluminescence spectroscopy. The PMMA/MEH-PPV blend film presented high homogeneity and high
photoemission intensity. Moreover, the PMMA/MEH-PPV blend film photodegradation in function of
sample exposure time to the blue-light excitation curve presented long biexponential time decay. These
results suggest that the PMMA/MEH-PPV blend film could be used as a long time exposure blue-light
dosimeter.