Reusable radiochromic hackmanite with gamma exposure memory

Vuori, Sami; Colinet, Pauline; Lehtiö, Juha‐Pekka; Lemière, Arnaud; Norrbo, Isabella; Granström, Micael; Konu, Jari; Ågren, Göran I.; Laukkanen, P.; Petit, Laëticia; Airaksinen, Anu J.; Goethem, L. Van; Bahers, Tangui Le; Lastusaari, Mika

doi:10.1039/d2mh00593j

Cited by 11 publications

(12 citation statements)

References 44 publications

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“…This reversibility makes Th-pba-0D reusable for radiation detection, an applaudable feature that allows for developing cost-effective radiation sensors. [23] Juxtaposed to Th-pba-0D, Th-pba-2D is neither radiochromic nor photochromic, giving credence to the essential role of structure in determining the photophysics of materials. [24] The UV-vis absorption spectrum of unirradiated Th-pba-2D is similar to that of Th-pba-0D owning to their identical components as shown in Figure 3c.…”

Section: Resultsmentioning

confidence: 99%

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Stepwise Crystallization of Millimeter Scale Thorium Cluster Single Crystals as a Bifunctional Platform for X‐ray Detection and Shielding

Zheng

Hou

et al. 2022

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application necessitating specific detection and efficient shielding of X-ray. [1] In general, radiation detection and radiation shielding are cataloged as two different disciplines. [2] The former focused on directly or indirectly converting invisible ionizing radiation into readable signals by ionization chambers, semiconductor detectors, scintillation counters, and so on. [3] For the latter field, high mass elements (Z) including Pb, W, and Bi, etc., are utilized to attenuate X-ray radiation, since the shielding efficacy is dependent on Z-value and density of the absorbing materials. [4] The bonding between these two areas appears to be weak at first glance. However, high Z-value elements are often preferred as well for building X-ray scintillators and semiconductor detectors, which renders constructing a dual-module platform of radiation detection and shielding plausible. [5] However, developing this type of proof-of-concept materials has not been documented and a single material integrating both functions remained elusive.Radiochromic organic-inorganic hybrids represent a relatively new type of material with the potential to be a dualmodule platform for radiation detection and shielding. [6] As one of the most sensible detection technologies, radiochromic materials turn colors upon being irradiated, which allows for straightforward detection of X-ray radiation in a visible manner. [7] Furthermore, the fine control over the metal cations and organic ligands in organic-inorganic hybrids offers a large set of synthetically accessible combinations in terms of composition and arrangement, an attribute that is absent in purely inorganic or organic materials. [8] Indeed, scintillating and semiconductive organic-inorganic hybrids with high X-ray sensitivity have emerged as new classes of radiation detectors. [9] Moreover, radiochromism has been realized in organic-inorganic hybrids by incorporating photochromic ligands and metal cations or clusters. [6,10] However, only a handful of these types of materials have been reported and their attenuation efficiencies of ionizing radiation remain underexplored. [6,10a,11] Our group has been recently focused on developing new synthetic strategies to access thorium-based crystalline materials for their promising applications in radiological fields. [12] As the second heaviest naturally occurring element, thorium can serve Monitoring and shielding of X-ray radiation are of paramount importance across diverse fields. However, they are frequently realized in separate protocols and a single material integrating both functions remained elusive. Herein, a hexanuclear cluster [Th 6 (µ 3 -OH) 4 (µ 3 -O) 4 (H 2 O) 6 ](pba) 6 (HCOO) 6 (Th-pba-0D) incorporating high-Z thorium cations and 3-(pyridin-4-yl)benzoate ligands that can function as a brand-new dual-module platform for visible detection and efficient shielding of ionizing radiation is demonstrated. Th-pba-0D exhibits rather unique reversible radiochromism upon alternating X-ray and UV irradiation. Moreover, the millimet...

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Section: Resultsmentioning

confidence: 99%

“…This reversibility makes Th‐pba‐0D reusable for radiation detection, an applaudable feature that allows for developing cost‐effective radiation sensors. [ 23 ]…”

Section: Resultsmentioning

confidence: 99%

Stepwise Crystallization of Millimeter Scale Thorium Cluster Single Crystals as a Bifunctional Platform for X‐ray Detection and Shielding

Zheng

Hou

et al. 2022

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“…As a matter of fact, an artificial modification of the tetrahedron structure was observed after irradiating a sodalite material with X-rays or g-rays. 4,39 Indeed, subsequent to the irradiation, X-ray diffraction measurements show the formation of NaCl in its own phase along with the material still possessing its sodalite structure made of b-cages. Besides, a modification of the material's F-center absorption is reported.…”

Section: àmentioning

confidence: 99%

Engineering aluminosilicate's photochromism by quantum chemistry

Colinet

Bahers

2023

J. Mater. Chem. C

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“…Recent developments into their synthetic analogues, some of which also display attractive luminescence properties, have shown that they have potential to be developed for a huge range of possible applications. The unique combination of white-to-pink reversible photochromism sensitive to UV 19 , X-rays 20 and gamma radiation 21 , along with orange and blue-white photoluminescence as well as persistent luminescence, means these materials could find future use as safety lighting 22 , X-ray imaging solutions 20 , radiation detectors 20,21 , dosimeters 20,21,23 , in diagnostics 22 and in energy storage 22 , to name just a few. These materials are also highly robust and do not require any expensive, toxic or endangered elements.…”

Section: Introductionmentioning

confidence: 99%