Photoactive thin films of polycaprolactam doped with europium (III) complex using phenylalanine as ligand

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• 作者：Irene Teresinha Santos Garcia^a ; ^{irene@iq.ufrgs.br} ; Patrí ; cia Velleda Ribeiro^b ; Diogo Silva Corr&ecirc ; a^b ; Igor Michel Neto da Cunha^b ; Neftali Lenin Villarreal Carreñ ; o^b ; Eduardo Ceretta Moreira^c ; Fabiano Severo Rodembusch^d
• 关键词：Photoactive films ; Polyamide ; Photoluminescence ; Phenylalanine europium complex
• 刊名：Applied Surface Science
• 出版年：2011
• 出版时间：1 December, 2011
• 年：2011
• 卷：258
• 期：4
• 页码：1437-1442
• 全文大小：1K

文摘

A photoactive complex based on europium(III) using the amino acid phenylalanine as ligand was prepared and characterized. The obtained europium(III)/phenylalanine complex presents an effective energy transfer from ligands to the rare earth center. The observed photoluminescent behavior for europium(III)/phenylalanine complex was similar to the well known europium(III)/ acetyl-¦Â-acetonate hydrate. New photoactive polyamide thin films were prepared using polycaprolactam as host of these complexes. The structural characterizations of the films were studied through Rutherford backscattering (RBS), Fourier transform infrared (FTIR) and Raman spectroscopies. The polyamide films doped with the amino acid and acetyl-¦Â-acetonate rare earth complexes maintain the original photoluminescent behavior, narrow emission bands corresponding to transitions ⁵D₀ ?#xA0;⁷F_0-4, which indicates that this polymer is an excellent host to these complexes.