Preparation and optical properties of Eu3+/Eu2+ in phosphors based on exchanging Eu3+-zeolite 13X

Wu, Honge; Yang, Xuyong; Yu, Xibin; Liu, Jie; Yang, Hong; Lv, Hongbin; Yin, Kaizhong

doi:10.1016/j.jallcom.2009.02.050

Cited by 16 publications

(12 citation statements)

References 19 publications

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“…All the time, Eu-doped GdPO 4 gets a high profile because of satisfactory energy transfer between Gd 3+ and Eu ions in GdPO 4 :Eu nanomaterials in the field of fluorescence . Here, GdPO 4 and Eu-doped GdPO 4 (GdPO 4 :Eu) with good biocompatibility and adsorption were synthesized by the template method and their ECL intensity was compared by using the experiment, which proved that the doping of Eu is conducive to enhance the ECL efficiency . Zeng’s group utilized hemin as the coreaction promoter designed in an ECL aptasensor to catalyze S 2 O 8 2– for accelerating the oxidation process of PTCA .…”

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confidence: 99%

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

et al. 2019

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Nowadays, the electrochemiluminescence (ECL) immunosensor with the unique superiority of tunable luminescence and ultrahigh sensitivity has become one of the most promising immunoassay techniques, especially for low-abundance biomarkers analysis. However, the use of signal probes with high excited potential and applied emitters which owned good intensity but biotoxicity limited its application. Herein, an ECL resonance energy transfer strategy was developed based on protein bioactivity protection utilizing europium-doped phosphoric acid gadolinium (GdPO4:Eu) as novel low-potential luminophor (donor) and Pd@Cu2O as the quenching probe (acceptor). Specifically, GdPO4:Eu was first prepared by using the hydrothermal synthesis method to apply in ECL, and when it coexisted with K2S2O8, cathode, a strong ECL signal would be generated at a low potential of −1.15 V (vs Ag/AgCl), where the immunocompetence of antigens and antibodies can be maintained well. Electrical pair Eu3+/Eu2+, as the coreactant promoter, produced by potential excitation could produce more SO4 •– to accelerate the oxidation process of GdPO4:Eu. Meanwhile, Cu2O coated onto Pd (Pd@Cu2O), as a dual-quencher, enhanced the quenching effect of Pd alone and controlled the ECL intensity of the “signal on” state within a reasonable range. As a result, the proposed biosensor for detection of trace procalcitonin, a biomarker of systemic inflammatory response syndrome, exhibited a far low detection limit, 0.402 fg/mL (S/N = 3). Importantly, this work not only utilized a promising ECL emitter for biosensing platform construction but also had momentous potential in biomarker detection of disease diagnosis and clinical analysis.

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confidence: 99%

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

et al. 2019

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“…26 In addition, the reduction of Eu 3+ to Eu 2+ during the calcination process has been previously observed in zeolite 13X. 27 In order to find out if there were Eu 3+ ions in the channel during the annealing process at 700 • C, 2-thenoyltrifluoroacetone (tta) molecules were encapsulated in the Eu 3+ -exchanged zeolite L microcrystals previously annealed at 700 • C for 3 h. Irradiation of the obtained sample with a 254 nm UV lamp lead to a red emission color; the excitation and emission spectra are shown in Fig. 7.…”

Section: Resultsmentioning

confidence: 71%

Luminescent materials of annealed Eu3+-exchanged zeolite L crystals

Fang

Wang

et al. 2010

Dalton Trans.

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In this work, we report the luminescence behavior of Eu(3+)-exchanged zeolite L microcrystals annealed at different temperatures. SEM and XRD techniques were employed to characterize the samples. UV-vis absorption spectroscopy and luminescence spectroscopy were used to study the luminescence properties of the annealed materials. It is shown that Eu(3+)-exchanged zeolite L crystals are structurally stable at 800 °C, and that its structure is completely collapsed when annealed at 1100 °C. Calcination of Eu(3+)-exchanged zeolite L crystals at 700 °C leads to a strong violet-blue emission, while a strong red emission is observed when the sample is annealed at 1100 °C.

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“…In the PL excitation spectra, the main broad band was assigned to the charge transfer band (CTB) of Eu 3 þ -O 2 À centered at about 200-300 nm [10]. The emission spectra excited upon 254 nm revealed orange-red emission peaks derived from the 5 D 0 -7 F j (j ¼0, 1, 2, 3, 4) transition of Eu 3 þ approximately at 590, 595, 612, 655 and 705 nm, respectively, and the blue emission broad band derived from 4f 6 5d-4f 7 transition of Eu 2 þ around 400-500 nm [11]. The dominant emission peak detected for the samples in this study was 5 D 0 -7 F 2 transition (electric dipole moment transition) at 612 nm.…”

Section: Resultsmentioning

confidence: 94%

Development of zeolite-derived novel aluminosilicate phosphors

Aoyama

Hayakawa

Honda

et al. 2012

Journal of Luminescence

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Preparation and optical properties of Eu3+/Eu2+ in phosphors based on exchanging Eu3+-zeolite 13X

Cited by 16 publications

References 19 publications

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

Luminescent materials of annealed Eu3+-exchanged zeolite L crystals

Development of zeolite-derived novel aluminosilicate phosphors

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Preparation and optical properties of Eu3+/Eu2+ in phosphors based on exchanging Eu3+-zeolite 13X

Cited by 16 publications

References 19 publications

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO4:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO4:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

Luminescent materials of annealed Eu3+-exchanged zeolite L crystals

Development of zeolite-derived novel aluminosilicate phosphors

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Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection

Electrochemiluminescence Double Quenching System Based on Novel Emitter GdPO₄:Eu with Low-Excited Positive Potential for Ultrasensitive Procalcitonin Detection