Thermoluminescence glow curve analysis of γ-irradiated Eu3+ doped SnO2 composites

Chowdhury, M.; Sharma, Shubham; Lochab, S.P.

doi:10.1016/j.ceramint.2015.12.094

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…The trap depth by this analysis method is given by Eq. ( 5 ) 64 – 66 , where α corresponds to τ = ( T m − T 1 ), δ = ( T 2 − T m ), and ω = ( T 2 − T 1 ). T m is the maximum peak temperature, T 1 and T 2 are the temperatures corresponding to half the intensity on either side of the maximum peak, and k is the Boltzmann constant.…”

Section: Methodsmentioning

confidence: 99%

Electron transfer-triggered imaging of EGFR signaling activity

Tan

et al. 2022

Nat Commun

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In vivo electron transfer processes are closely related to the activation of signaling pathways, and, thus, affect various life processes. Indeed, the signaling pathway activation of key molecules may be associated with certain diseases. For example, epidermal growth factor receptor (EGFR) activation is related to the occurrence and development of tumors. Hence, monitoring the activation of EGFR-related signaling pathways can help reveal the progression of tumor development. However, it is challenging for current detection methods to monitor the activation of specific signaling pathways in complex biochemical reactions. Here we designed a highly sensitive and specific nanoprobe that enables in vivo imaging of electronic transfer over a broad range of spatial and temporal scales. By using the ferrocene-DNA polymer “wire”, the electrons transferred in a biochemical reaction can flow to persistent luminescent nanoparticles and change their electron distribution, thereby altering the optical signal of the particles. This electron transfer-triggered imaging probe enables mapping the activation of EGFR-related signaling pathways in a temporally and spatially precise manner. By offering precise visualization of signaling activity, this approach may offer a general platform not only for understanding molecular mechanisms in various biological processes but also for promoting disease therapies and drug evaluation.

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Section: Methodsmentioning

confidence: 99%

Electron transfer-triggered imaging of EGFR signaling activity

Tan

et al. 2022

Nat Commun

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“…For this purpose, many investigations have been conducted. In this sense, oxide-based thermoluminescence dosimetric (TLD) materials have been proposed as a TLD material; there are numerous reports on the dosimetric properties of the oxide-based material as a TL material [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a thermoluminescence response and trapping parameters and theoretical model to explain concentration quenching for $$\hbox {Yb}^{3+}$$-doped $$\hbox {ZrO}_{{2}}$$ phosphors under UV exposure

Upadhyay

Tamrakar

Asthana³

2019

Bull Mater Sci

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In this paper, a thermoluminescence signal centred at 129 • C induced by UV radiation of Yb 3+-doped ZrO 2 is reported. Phosphor was prepared by a solution combustion method and annealed at 600 and 900 • C to study the effect of annealing. The prepared phosphor was characterized by X-ray diffraction and scanning electron microscopy methods. Various parameters were optimized. Computerized glow curve deconvolution was employed and kinetic parameters for every deconvoluted peak were calculated. To understand the concentration quenching, a 3T1R (three trap one recombination centre) model has been proposed.

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“…Literature reports on the optical properties of SnO2 ceramic nanoparticles are relatively scarce. Studies of SnO2 doped with ions such as Er [11], Dy [12], Eu [13], Sb [14] and Mg [15] have been reported, but to the best of our knowledge, very few reports exist of host sensitization energy transfer studies involving SnO2 nanocrystals and Sm 3+ ions [16]. Sensitized emission from semiconductors has mainly been reported for TiO2 host structures [5], but in most cases the semiconductor was embedded in a partiallycrystalline or amorphous matrix, and the resulting reduction in site homogeneity and symmetry led to broadening of the emission peaks at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photoluminescent properties of Sm3+-doped SnO2 nanoparticles

Faustino

Foot

Kresiński

2016

Ceramics International

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SnO2 ceramic nanoparticles homogeneously doped with Sm 3+ ions were synthesized via a sol-gel method, followed by drying and annealing in air. Xray diffractometry, FT-IR spectrometry and transmission electron microscopy were used to characterize the nanoparticulate samples. After annealing, both doped and undoped SnO2 nanopowders were shown to adopt the rutile tetragonal crystal form and to exhibit characteristic Sn-O-Sn vibrations. The average particle size was found to be in the region of 23-28 nm. Photoluminescence analysis at room temperature demonstrated strong enhancement of the visible emission from Sm 3+ , via energy transfer from the SnO2 host matrix to the dopant. The maximum emission efficiency was observed for a concentration of 1.5 atom % Sm 3+ .

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Thermoluminescence glow curve analysis of γ-irradiated Eu3+ doped SnO2 composites

Cited by 14 publications

References 17 publications

Electron transfer-triggered imaging of EGFR signaling activity

Electron transfer-triggered imaging of EGFR signaling activity

Investigation of a thermoluminescence response and trapping parameters and theoretical model to explain concentration quenching for $$\hbox {Yb}^{3+}$$-doped $$\hbox {ZrO}_{{2}}$$ phosphors under UV exposure

Synthesis and photoluminescent properties of Sm3+-doped SnO2 nanoparticles

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