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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Simple preparation of fluorescent composite films based on cerium and europium doped LaF3 nanoparticles

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Author(s):
Secco, Henrique de L. [1] ; Ferreira, Fabio F. [2] ; Peres, Laura O. [1]
Total Authors: 3
Affiliation:
[1] Univ Fed Sao Paulo, Lab Mat Hibridos, Diadema, SP - Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Santo Andre, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Solid State Chemistry; v. 259, p. 43-47, MAR 2018.
Web of Science Citations: 2
Abstract

The combination of materials to form hybrids with unique properties, different from those of the isolated components, is a strategy used to prepare functional materials with improved properties aiming to allow their application in specific fields. The doping of lanthanum fluoride with other rare earth elements is used to obtain luminescent particles, which may be useful to the manufacturing of electronic devices' displays and biological markers, for instance. The application of the powder of nanoparticles has limitations in some fields; to overcome this, the powder may be incorporated in a suitable polymeric matrix. In this work, lanthanum fluoride nanoparticles, undoped and doped with cerium and europium, were synthesized through the co-precipitation method in aqueous solution. Aiming the formation of solid state films, composites of nanoparticles in an elastomeric matrix, the nitrile rubber (NBR), were prepared. The flexibility and the transparency of the matrix in the regions of interest are advantages for the application of the luminescent composites. The composites were applied as films using the casting and the spin coating techniques and luminescent materials were obtained in the samples doped with europium and cerium. Scanning electron microscopy images showed an adequate dispersion of the particles in the matrix in both film formation techniques. Aggregates of the particles were detected in the samples which may affect the uniformity of the emission of the composites. (AU)

FAPESP's process: 08/57706-4 - National Institute of Science and Technology on Organic Electronics (INEO)
Grantee:Roberto Mendonça Faria
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 13/13621-3 - Study of composites prepared using lanthanum fluoride nanoparticles.
Grantee:Henrique de Lima Secco
Support Opportunities: Scholarships in Brazil - Master