Red-light-emitting polymer composite based on PVDF membranes and Europium phosphor using Buriti Oil as plasticizer

Autor(es)

Bispo-Jr, Airton Germano ; Oliveira, Nagyla Alves ^{[1, 2]} ; Cardoso, Celso Xavier ^[1] ; Marques Lima, Sergio Antonio ^{[1, 2]} ; Job, Aldo Eloizo ^[1] ; Osorio-Roman, Igor Orlando ^[1] ; Danna, Caroline Silva ^{[1, 3]} ; Pires, Ana Maria ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Bispo-Jr, Jr., Airton Germano, Sao Paulo State Univ Unesp, Sch Technol & Sci, BR-19060900 Presidente Prudente, SP - Brazil

^[2] Bispo-Jr, Jr., Airton Germano, Sao Paulo State Univ Unesp, Inst Biosci Humanities & Exact Sci, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[3] Univ Chile, Fac Ciencias, Dept Fis, Santiago 8370415 - Chile

• Tipo de documento: Artigo Científico
• Fonte: Materials Chemistry and Physics; v. 217, p. 160-167, SEP 15 2018.
• Citações Web of Science: 3

Resumo

Rare-earth-doped phosphors immobilized in polymeric matrices find many applications like LEDs. However, little emphasis has been paid to the phosphor and plasticizer effect on the polymer structural, morphological and spectroscopic properties, for the development of functional devices. In this study, we are reporting for the first time the use of Buriti Oil (BO), a natural oil, as plasticizer in Ba2SiO4:Eu3+-doped PVDF composites membranes. Both, Buriti oil and phosphor amount were varied in the membrane synthesis. The drying temperature at 60 degrees C leads to the formation of the alpha-PVDF and the increase of the amount of BO up to 400 mu L decreases the PVDF crystallinity. Furthermore, the BO and phosphor additions increase the membrane thermal stability. Finally, the composite obtained with 10 wt% of Ba2SiO4:Eu3+ shows relative intense red emission with maximum at 612 nm originating from the Eu3+ radiative transitions in Ba2SiO4 lattice, making this composite material a good candidate for optical devices. (AU)

• Processo FAPESP: 16/20421-9 - Dispositivos tricromáticos a base de Ba2SiO4:Eu3+ e/ou Tb3+: síntese sol-gel e deposição eletroforética visando aplicação em LEDs brancos
• Beneficiário: Airton Germano Bispo Júnior
• Linha de fomento: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 15/10394-1 - Filmes LBL luminescentes de Ba2SiO4 dopado com terras raras obtido via sol-gel para aplicação em LEDs brancos
• Beneficiário: Airton Germano Bispo Júnior
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/13876-9 - Efeitos ópticos e estruturais da variação da concentração do íon dopante Eu(III) na matriz Ba2SiO4 sintetizada via sol-gel
• Beneficiário: Airton Germano Bispo Júnior
• Linha de fomento: Bolsas no Brasil - Iniciação Científica