scholarly journals Synthesis and thermal characterization of luminescent hybrid composites based on bisphenol A diacrylate and NVP

2019 ◽  
Vol 138 (6) ◽  
pp. 4463-4473 ◽  
Author(s):  
Renata Łyszczek ◽  
Beata Podkościelna ◽  
Agnieszka Lipke ◽  
Agnieszka Ostasz ◽  
Andrzej Puszka
Keyword(s):  
Bisphenol A ◽  
Lanthanide Complexes ◽  
Hybrid Composites ◽  
Thermal Characterization ◽  
Synthesis And Characterization ◽  
Photoluminescence Properties ◽  
Constant Concentration ◽  
Volatile Products ◽  
Active Diluent

Abstract The synthesis and characterization of luminescent hybrid composites based on bisphenol A glycerolate (1 glycerol/phenol) diacrylate (BPA-Acr) as a cross-linking monomer and N-vinylpyrrolidone (NVP) as an active diluent, in the presence of UV initiator (Irgacure 651), are presented. Eu(III) and Tb(III) carboxylate complexes were added as luminescent components of composites. In their preparation, a constant concentration of the initiator (1%) and the BPA-Acr to NVP (10:3) ratio were applied. The structures of the obtained materials were confirmed by the infrared spectra (ATR-FTIR). Thermal properties of the cross-linked products were determined by different thermal analysis methods in air and nitrogen (TG–DTG–DSC and TG–FTIR). Thermal stability, pathways of thermal decomposition and volatile products of degradation were determined. Photoluminescence properties of the lanthanide complexes and the obtained composites were established. These materials can have the potential application as coatings filtering harmful UV radiation.

scholarly journals Synthesis and Characterization of a Multifunctional Conjugated Polymer

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Emerson C. G. Campos ◽  
Cristiano Zanlorenzi ◽  
Bruno F. Nowacki ◽  
Gabriela M. Miranda ◽  
Denis A. Turchetti ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Molar Mass ◽  
Photophysical Properties ◽  
Gel Permeation Chromatography ◽  
Thermal Characterization ◽  
Polymer Structure ◽  
Synthesis And Characterization ◽  
Metallic Ions ◽  
Scanning Calorimetry

This work reports the synthesis and characterization of a conjugated polymer based on fluorene and terpyridine, namely, poly[(9,9-bis(3-((S)-2-methylbutylpropanoate))fluorene-alt-6,6′-(2,2′:6′,2′′-terpyridin-6-yl)] (LaPPS71). The structure was characterized by 1H and 13C nuclear magnetic resonance (NMR) and Fourier-transform infrared (FTIR) spectroscopy. The molar mass was measured by gel permeation chromatography (GPC). As thermal characterization, the glass transition temperature (Tg) was measured by differential scanning calorimetry (DSC). The polymer structure contains two sites capable of complexation with metallic ions, affording the possibility of obtainment of independent or electronically coupled properties, depending on the complexation site. The photophysical properties were fully explored in solution and solid state, presenting ideal results for the preparation of various metallopolymers, in addition to potential application as a metamaterial, due to the presence of the chiral center in the side chains of the polymer.

Synthesis and characterization of dinuclear heterometallic lanthanide complexes exhibiting MRI and luminescence response

2010 ◽  
Vol 39 (24) ◽  
pp. 5721 ◽  
Author(s):  
Ilgar Mamedov ◽  
Tatjana N. Parac-Vogt ◽  
Nikos K. Logothetis ◽  
Goran Angelovski
Keyword(s):  
Lanthanide Complexes ◽  
Synthesis And Characterization

Synthesis and characterization of lanthanide complexes bearing a ferrocene-containing N-aryloxo-β-ketoiminate ligand

2010 ◽  
Vol 695 (25-26) ◽  
pp. 2726-2731 ◽  
Author(s):  
Xiang-Yong Gu ◽  
Xiang-Zong Han ◽  
Ying-Ming Yao ◽  
Yong Zhang ◽  
Qi Shen
Keyword(s):  
Lanthanide Complexes ◽  
Synthesis And Characterization

Hydrothermal Synthesis and Characterization of Nanocrystalline Gd2Sn2O7:Eu3+ Phosphors

2011 ◽  
Vol 239-242 ◽  
pp. 2851-2854 ◽  
Author(s):  
Jin Yu Yang ◽  
Yu Chang Su ◽  
Zhuo Chen ◽  
Xue Ying Liu
Keyword(s):  
Single Phase ◽  
Concentration Quenching ◽  
Synthesis And Characterization ◽  
Photoluminescence Properties ◽  
Excitation Spectra ◽  
Pyrochlore Type ◽  
Co Precipitation ◽  
Synthesized Materials ◽  
Quenching Phenomenon

Phase-pure Eu3+doped Gd2Sn2O7nanocrystals have been successfully synthesized via a co-precipitation processes combined with hydrothermal treatment. The crystal structure, particle size, morphologies, composition, and photoluminescence properties of the as-synthesized products were investigated by XRD, SEM, TEM, EDS and PL. The samples were single-phase cubic pyrochlore-type nanocrystals with a typical size of about 30 - 60 nm. All the samples exhibited irregular flower like secondary nanostructure assembled by primary nanoparticles. Photoluminescence properties of Gd2Sn2O7:Eu3+were investigated, and the results revealed that the as-synthesized materials displayed intense and prevailing emission located at 580 - 630 nm. The excitation spectra indicated that an energy transfer from Gd3+to Eu3+occurred. Meanwhile, the concentration quenching phenomenon was observed in Gd2Sn2O7:Eu3+nanocrystals.

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