Trabalho apresentado em evento
Luminescent multifunctional biocellulose membranes
Fecha
2011-10-17Registro en:
Proceedings of SPIE - The International Society for Optical Engineering, v. 8104.
0277-786X
10.1117/12.895418
2-s2.0-80053939695
2998503841917815
6446047463034654
0000-0003-3286-9440
Autor
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Universidade Federal do Recôncavo da Bahia (UFRB)
COPL
Resumen
Luminescent biocellulose membranes were obtained by incorporation of ethanolic solutions of the europium compounds [Eu(BTFAC)3(H2O)2], [Eu(BTFA) 3(DBSO)2], [Eu(BTFA)3(PTSO)2] and [Eu(BTFA)3(FSO)2] (BTFAC- 4,4,4-Trifluoro-1- phenyl-1,3-butanedione DBSO- dibenzyl sulfoxide, PTSO- p-Tolyl sulfoxide and FSO- phenyl sulfoxide). Selfsustainable semi-transparent composite membranes were obtained showing strong emission under UV exctiation. The antenna hole played by the ligands was observed to be more efficient in the composite membranes than in the precursor complexes which by themselves are also strong red emitter compounds. These new multifuctional membranes could find application in different areas as phosphors and UV→Visible energy converting devices. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).