In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 19, No. 8 ( 2004-08), p. 2256-2261
Abstract:
Eu(DBM) 3 phen-doped poly(methyl methacryate) (PMMA) with different doping concentration were prepared. The highest doping concentration sample (10000 ppm) was examined by near-field scanning optical microscopy (NSOM) with a resolution of 50 nm; and the result showed that there were no aggregates larger than 50 nm in the doped polymer. This result was further confirmed by optical properties of the doping material. Concentration quenching was not detected by metastable-state lifetime measurements, indicating that no aggregates existed. According to the fluorescence spectra analysis, the relative intensity ratio (R) of 5 D 0 → 7 F 2 to 5 D 0 → 7 F 1 transition was not shown to be significantly changed with the increasing of Eu 3+ content. The analysis reflected that the local structure and asymmetry in the vicinity of europium ions were not changed, and that the Eu 3+ ions in PMMA were homogeneously dispersed.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/JMR.2004.0326
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2004
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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