Luminescent properties of PP and LDPE films and rods doped with the Eu(III)‐La(III) complex

Abstract

The work is devoted to luminescent properties of trivalent lanthanide complexes dispersed in thermoplastic host matrices. Polyethylene films and polypropylene-rods, both doped with these complexes, were manufactured using an extrusion technique. Two kinds of dopants were used: Eu(III)-thenoyltrifluoroacetone-1,10-phenanthroline complex (1) and Eu(III)-La(III)-1,10-phenanthroline complex (2). Absorption, excitation, emission spectra and lifetime of luminescence were studied. The impact of the polymer matrix on the emission spectra was investigated. Emission spectra of the films were studied at room and helium temperatures. Time-of-flight secondary ion mass spectrometry (TOF-SIMS) surface mapping showed that in the Eu(III)-La(III) complex europium forms islands (clusters) with a dimension of 1 mm, whereas lanthanum was dispersed more uniformly in the polymer matrix. Dependence of emission intensity on the excitation was determined.

Preparation and Fluorescent and Magnetic Properties of Polyurethane/Eu(MA)3 Films

“…One of the preparation methods of lanthanide-ion-doped polymer is a blending method: ytterbium-tetraphenylporphyrin complexes/ polystyrene blends; [12] Eu(III)-thenoyltrifluoroacetone-1,10-phenanthroline (or Eu(III)-La(III)-1,10-phenanthroline) complexes with polyethylene (or poly(propylene)) films; [13] triaquatris(acetyl acetonate)europium(III) with diglycidyl methacrylic resins; [14] or Eu(III)(NO 3 ) 3 (o-phenanthroline) 2 complexes with poly(vinylidene fluoride). [15] Lanthanideion-doped polymers can also be prepared via copolymerization of lanthanide-organic complexes, usually coordinated with ligands containing vinyl group, with organic monomers.…”

Fluorescence properties of polyaryletherketone rare earth-coordinated complexes in near-infrared region

“…Nevertheless, rare earth-doped polymers prepared by the simple mixing of rare earth complexes with a polymer matrix often give rise to serious fluorescence quenching due to the ionic aggregates, even at low rare earth ion content. 19,25 It is desirable that rare earth ions are coordinated with some polymer functional groups. Thus, rare earth ions attached to the polymer backbone via a coordination bond can be well dispersed within the polymer matrix at the molecular level.…”

A novel calixarene‐containing hyperbranched aliphatic polyester incorporated with pendant europium complexes

“…[7] Recently, polymers containing lanthanide metal ions attracted increasing attention due to many intriguing properties such as photo-and electroluminescence. [8][9][10][11] Lanthanide complexes typically have been found to possess narrow emission bands and high efficiency. [12,13] Since the emissions from lanthanide complexes originate from transitions between f levels that are effectively shielded from the influence of external forces by filled 5s 2 and 5p 6 orbitals, the various states arising from f n configurations are split by external fields only to the extent of 100 cm À1 .…”