Calorimetric investigations of luminescent films polycarbonate (PC) doped with europium complex [Eu(TTA)3(H2O)2]

Forster, Pedro Lima; Lugão, Ademar B.; Brito, Hermi F.; Parra, D.F.

doi:10.1007/s10973-009-0327-6

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…Similarly, the T g values of the Eu III and Tb III systems of the BEP polymer shift to -7 and -8°C, respectively, from -32°C (Figure 4b). By contrast, Lu and co-workers [14] observed a decrease in the T g values of the PC films following coordination of Pr III ions, while Forster and coworkers [36] observed a decrease in the T g values of PC films doped with a [Eu(tta) 3 (H 2 O) 2 ] complex. We have attribute the decrease in the T g values observed in our polymers to the Ln III complexes acting as a plasticizer, as seen also by Lu, Forster and co-workers.…”

Section: Resultsmentioning

confidence: 89%

“…We have attribute the decrease in the T g values observed in our polymers to the Ln III complexes acting as a plasticizer, as seen also by Lu, Forster and co-workers. [14,36] We isolated the analogous Gd III -polymer systems, which were used to determine the location of the 1 S and 3 T excited states (Table 2 and Figures S17a-b and S18a-b), through low temperature fluorescence and phosphorescence spectroscopy. [37] The polymers have similar Table 2).…”

Section: Resultsmentioning

confidence: 99%

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Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

et al. 2017

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Abstract:We prepared pyridine-2,6-bis(ethyl)ester [BEP] and pyridine-2,6-bis(diethylamide) [BDP] polymers with polycarbonate backbones by ring-opening polymerization of the pyridinebis(ethyl)ester and pyridine-bis(diethylamide) units appended to a cyclic carbonate via a glycol chain. The polymers were characterized by FTIR, NMR, UV/Vis absorption and fluorescence spectroscopy, as well as SEC, powder XRD, DSC, and TGA. The measured glass transition temperature (T g ) of the BEP polymer was shifted from -32°C to -7 and -8°C after coordination of the Eu III and Tb III ions, respectively. Similarly, the T g of the BDP

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

et al. 2017

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“…Among different lanthanides ions, Eu 3+ ions can be doped into GG and act as structural probe (Forster et al 2009;Gupta et al 2015) allowing structural changes at the molecular level and derived properties to be investigated. The Eu 3+ ion coordination sphere can be altered and monitored by spectroscopic analysis.…”

Section: Introductionmentioning

confidence: 99%

Rheological and spectroscopic study of luminescent Eu3+ -doped gellan gum

Torres

Sarmento

Barud

et al. 2023

Preprint

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Gellan gum (GG) can be prepared in the form of a gel and be used as a versatile and functional biomaterial. GG can come in the acetylated (HAGG) and deacetylated (LAGG) forms. There are gaps in the study of these GG matrixes associated with lanthanide ions, well-known for their luminescent properties. In this work, we have doped HAGG and LAGG with Eu3+ ions and used the resulting HAGG_Eu and LAGG_Eu gels as structural probe in spectroscopic analyses. The presence of Eu3+ ions in the GG polymeric network gradually changed the viscoelastic properties of the HAGG_Eu and LAGG_Eu gels, as confirmed by oscillatory rheology analysis. The spectroscopic study of the films obtained from HAGG_Eu and LAGG_Eu revealed how the Eu3+ ion interaction occurs, thereby improving our understanding about their structures. To intensify the emission process in the LAGG_Eu films, we added the β-diketone ligand TTA (2-thenoyltrifluoroacetone) to them, that acted as a sensitizer for Eu3+ ions. In conclusion, we have been able to obtain luminescent films based on GG. In addition, we have carried out an unprecedented structural study of the Eu3+-containing films, which have promising luminescent properties for use as new biocompatible systems.

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“…A energia absorvida pela parte orgânica pode ser transferida ao íon metálico, resultando em bandas de emissão intensas na região do visível com grande deslocamento "Stokes" e, geralmente, tempos de vida mais longos que o complexo tal qual. Em consequência, polímeros dopados são matrizes promissoras como dispositivos eletroluminescentes e materiais optoeletrônicos [54][55][56][57][58][59][60][61] .…”

Section: Polímeros Como Matrizes Encapsuladoras De íOns Ln 3+unclassified

Desenvolvimento de sistemas híbridos luminescentes - Polímero:európio(III) com estabilidade térmica e fotoluminescente

Forster¹

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Ao meu filho, Murilo Ribeiro Forster, por me dar a força mesmo quando ela não existe.Aos meus Pais, Vilma e Rubens, e minha irmã, Carla, pela educação base para minha vida e apoio nos meus estudos, e por tudo, sem vocês não sou ninguém.A minha orientadora, Prof a . Dr a . Duclerc Fernandes Parra, pelo tempo, confiança, por todos esses anos de IPEN, IC, Mestrado e Doutorado, por seus pelos "puxões" de orelha quando necessário e, sobretudo, por sua dedicação e infinita paciência comigo, por compartilhar seus conhecimentos comigo, pelo interesse e sugestões valiosas para o desenvolvimento desta Tese, Obrigado!

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Calorimetric investigations of luminescent films polycarbonate (PC) doped with europium complex [Eu(TTA)3(H2O)2]

Cited by 11 publications

References 15 publications

Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

Rheological and spectroscopic study of luminescent Eu3+ -doped gellan gum

Desenvolvimento de sistemas híbridos luminescentes - Polímero:európio(III) com estabilidade térmica e fotoluminescente

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Calorimetric investigations of luminescent films polycarbonate (PC) doped with europium complex [Eu(TTA)3(H2O)2]

Cited by 11 publications

References 15 publications

Sensitization of LnIII (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

Sensitization of LnIII (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

Rheological and spectroscopic study of luminescent Eu3+ -doped gellan gum

Desenvolvimento de sistemas híbridos luminescentes - Polímero:európio(III) com estabilidade térmica e fotoluminescente

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Product

Resources

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Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation

Sensitization of Ln^III (Ln = Eu, Tb, Tm) Ion Luminescence by Functionalized Polycarbonate‐Based Materials and White Light Generation