Flexible translucent persistent luminescent films based on Sr2MgSi2O7:Eu2+,Dy3+ cellulose ether composites

Autor(es)

Fritzen, Douglas L. ; de Mattos, Elaine A. ; Petri, Denise F. S. ; Teixeira, Veronica C. ; Bonturim, Everton ; Rodrigues, Lucas C., V

• Tipo de documento: Artigo Científico
• Fonte: DALTON TRANSACTIONS; v. 51, n. 23, p. 6-pg., 2022-05-25.

Resumo

Persistent luminescent materials are present in several recent studies on new applications and novel properties. In this work, we demonstrate, for the first time, the production of translucent flexible persistent composites based on Sr2MgSi2O7:Eu2+,Dy3+ (SMSO) into cellulose ether matrix film. The composite was successfully prepared through a new optimized route of co-precipitation and microwave-assisted annealing followed by (3-aminopropyl)triethoxysilane (APTES) coating and dispersion in hydroxypropyl methylcellulose (HPMC). The SMSO@APTES/HPMC films show persistent luminescence emission at 475 nm (blue) and high transmittance in the visible range. To understand the fine distribution of the nanoparticles in the matrix, we have investigated their structure and dispersion by using Synchrotron Radiation X-ray fluorescence mapping and Scanning Transmission X-ray Microscopy. This innovative composite could bring new perspectives for the class of persistent luminescence materials, enhancing technologies in progress throwing light on new applications never perceived. (AU)

• Processo FAPESP: 18/05280-5 - Materiais fotônicos ativos no vermelho-infravermelho para conversão e armazenamento de energia
• Beneficiário: Lucas Carvalho Veloso Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/26282-6 - Desenvolvimento de dispositivos baseado em filmes finos com luminescência persistente
• Beneficiário: Douglas Lourenço Fritzen
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto