Designing metal-organic frameworks for radiation detection

Feng, Patrick L.; Branson, Janelle V.; Hattar, Khalid Mikhiel; Vizkelethy, György; Allendorf, Mark D.; Doty, F. Patrick

doi:10.1016/j.nima.2011.01.102

Cited by 32 publications

(19 citation statements)

References 12 publications

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“…Radioluminescence measurements were conducted using an ion beam induced luminescence (IBIL) method in the Ion Beam Laboratory, Sandia Laboratories, New Mexico, using published procedures [11,12]. The experimental setup and conditions involved a 2.5 MeV proton beam, a current density 12,000 nA/cm 2 with the sample under 4.3 × 10 −6 Torr vacuum pressure and ambient temperature.…”

Section: Photoluminescence and Radioluminescencementioning

confidence: 99%

Anthracene-Based Lanthanide Metal-Organic Frameworks: Synthesis, Structure, Photoluminescence, and Radioluminescence Properties

et al. 2018

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Four anthracene-based lanthanide metal-organic framework structures (MOFs) were synthesized from the combination of the lanthanide ions, Eu 3+ , Tb 3+ , Er 3+ , and Tm 3+ , with 9,10-anthracenedicarboxylic acid (H 2 ADC) in dimethylformamide (DMF) under hydrothermal conditions. The 3-D networks crystalize in the triclinic system with P-1 space group with the following compositions: (i) {{[Ln 2 (ADC) 3 (DMF) 4 ·DMF]} n , Ln = Eu (1) and Tb (2)} and (ii) {{[Ln 2 (ADC) 3 (DMF) 2 (OH 2 ) 2 ·2DMF·H 2 O]} n , Ln = Er (3) and Tm (4)}. The metal centers exist in various coordination environments; nine coordinate in (i), while seven and eight coordinate in (ii). The deprotonated ligand, ADC, assumes multiple coordination modes, with its carboxylate functional groups severely twisted away from the plane of the anthracene moiety. The structures show ligand-based photoluminescence, which appears to be significantly quenched when compared with that of the parent H 2 ADC solid powder. Structure 2 is the least quenched and showed an average photoluminescence lifetime from bi-exponential decay of 0.3 ns. On exposure to ionizing radiation, the structures show radioluminescence spectral features that are consistent with the isolation of the ligand units in its 3-D network. The spectral features vary among the 3-D networks and appear to suggest that the latter undergo significant changes in their molecular and/or electronic structure in the presence of the ionizing radiation.

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Section: Photoluminescence and Radioluminescencementioning

confidence: 99%

Anthracene-Based Lanthanide Metal-Organic Frameworks: Synthesis, Structure, Photoluminescence, and Radioluminescence Properties

et al. 2018

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“…These crystalline materials displayed enhanced radiation hardness and could potentially be stable for routine use with minimal concerns over radiation‐induced degradation. IBIL spectra were significantly different for MOFs with two different linkers: 4,4′‐biphenyldicarboxylic acid (H 2 BPDC) and 2,6‐naphthalenedicarboxylic acid (H 2 NDC) . BPDC 2− displays a superimposable photoluminescence/IBIL emission spectra while a new 476 nm IBIL emission peak was observed for NDC 2− .…”

Section: Nanoparticle Systemsmentioning

confidence: 99%

Molecular and Nanoscale Sensors for Detecting Ionizing Radiation in Radiotherapy

2016

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Ever since the discovery of radioactivity,b eneficial use of ionizing radiation has been pursued for the betterment of human health. In particular, fractionated radiotherapy is commonlyu sed in the clinic fora blation of malignant tumors. Use of higher radiation dose fractionsa nd complex dose trajectories necessitate measurements of radiation dose delivered to the target tissue and surrounding tissues in order to ensure patient safety.T raditional dosimeters including polymer gel dosimeters, radiochromic films and metal-oxide semiconductor field effect transistors (MOSFETs) suffer from limitations, whichc omplicate their day-to-day use in the clinic. Molecular and nanoscale systems offer great potentialf or the development of effective sensors of ionizingr adiation,w hich can lead to quantitative dosimeters in biological settings. Thisr eview discusses recent developments based on organic and inorganic molecular and nanoscale dosimeters including quantum dots,p olymers and plasmonic nanoparticles as platforms for radiation sensing. Potential advantages and challenges of translating these technologiestoc linical applicationsare also discussed.

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“…The Lanthanides row (referred to as a whole using Ln symbol) is a family of heavy elements that sees a lot of interest in research. It is common to see studies on their chemistry (eg, catalysis, 1‐3 synthesis 4 ), their photophysics (narrow emission, 5,6 visible, and infrared emission 7,8 ), their applications in materials science (plastic labeling, 9 crystals 10‐15 ), and in nuclear sciences (scintillator, 16‐19 beta detection, 20 and radioluminescence imaging 21,22 ). Gathering expertise from these fields, our group earlier focused on using gadolinium in a plastic scintillator 23 as a thermal neutron absorber 24,25 .…”

Section: Introductionmentioning

confidence: 99%

Pan‐lanthanides method for plastic doping, application in photophysics, and scintillation with proof of photoelectric event occurrences

Bertrand

Dumazert

Coulon

et al. 2020

Polymers for Advanced Techs

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Taking advantage of lanthanide chemistry and coordination dynamics, a method was elaborated to embed high amounts of organometallic complexes inside a polymeric matrix. The use of a carbonylated cross‐linker allows more than a 10‐fold increase of the solubility in monomeric solution, which can afford samples reaching up to 1 wt% incorporation of lanthanides atoms. Derivatives of these samples were used as plastic scintillators to observe total gamma‐ray absorption (Photoelectric [PE] effect) of a 241Am source. The analysis was conducted on the PE occurrence rate, which showed a discontinuity along the lanthanide row, confirming that the observed signal is indeed due to PE events. These methods also provide mechanically durable samples with stable photophysical properties comparable to a solution study of lanthanides complexes.

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Designing metal-organic frameworks for radiation detection

Cited by 32 publications

References 12 publications

Anthracene-Based Lanthanide Metal-Organic Frameworks: Synthesis, Structure, Photoluminescence, and Radioluminescence Properties

Anthracene-Based Lanthanide Metal-Organic Frameworks: Synthesis, Structure, Photoluminescence, and Radioluminescence Properties

Molecular and Nanoscale Sensors for Detecting Ionizing Radiation in Radiotherapy

Pan‐lanthanides method for plastic doping, application in photophysics, and scintillation with proof of photoelectric event occurrences

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