A Room‐Temperature X‐ray‐Induced Photochromic Material for X‐ray Detection

Wang, Mingsheng; Yang, Chen; Wang, Guan‐E; Xu, Gang; Lv, Xiangying; Xu, Zhusheng; Lin, Rong-Guang; Cai, Li‐Zhen

doi:10.1002/ange.201108220

Cited by 42 publications

(16 citation statements)

References 23 publications

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“…5a). 25 The PL intensity of Th-SINAP-100 remains approximately unchanged after removal of continuous radiation source, suggesting that the affording radicals are stable under ambient conditions (Fig. S7).…”

Section: Mechanism Of Photochromism and Photoluminescence Modulationmentioning

confidence: 94%

“…20,21,22,23,24 Metalorganic complexes featuring ionizing radiation induced photochromism are uncommon; systems showing photochromically modulated luminescence are even rarer. 25,26,27 In addition, the PL modulations of these materials are limited to simple on/off switching with coloring/bleaching behaviors, while the emission colors barely change. 2,28 Herein, we present an unprecedented dual-module photochromic nanocluster, [Th 6 (OH) 4 (O) 4 (H 2 O) 6 ] (TPC) 8 (HCOO) 4 (Th-SINAP-100, TPC = 2,2':6',2''-terpyridine-4'-carboxylate), featuring both color and luminescence photochromism within a single material upon UV, β, and γ-ray irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Xie

Wang

et al. 2020

Preprint

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Radiation dosimeters displaying conspicuous response of irradiance are highly desirable over the recent decade owing to the growing demand of monitoring high-energy radiation and environmental exposure. Herein, we present the first case of dosimetry based on a discrete nanocluster by judicious incorporating heavy Th6 polynuclear centers as radiation attenuator and organic linkers as photo-responsive sensor to enhance chromic response. Rather unusual dual-module photochromic transitions upon multiple external stimuli including UV, β-ray, and γ-ray are integrated into this single material. The striking color change, and more significantly, the visible chromic transition of luminescence in response to accumulating radiation dose allow an on-site quantitative platform for naked-eye detection of ionization radiations over a broad range (1–80 kGy). SC-XRD and DFT calculations revealed that the dual-module photochromism can be attributed to a unique π(TPC)→π*(TPC) intermolecular charge transfer (IeMCT) driven by enhanced π-π stacking interaction between the adjacent TPC moieties upon irradiations.

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Section: Mechanism Of Photochromism and Photoluminescence Modulationmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Xie

Wang

et al. 2020

Preprint

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“…Metal chelators can regulate the metal‐induced Ab aggregation and subsequent neurotoxicity through the removal of coordinating metal ion species (e. g. Zn 2+ , Cu 2+ ) from Aβ plaques. Research demonstrate that polyoxometalates (POMs) can effectively suppress Aβ aggregation . In our previous work, three novel polyoxometalate complexes 1, 2, and 3 were synthesized.…”

Section: Introductionmentioning

confidence: 99%

Peptide‐Modified Mo Polyoxometalate Nanoparticles Suppress Zn²⁺‐Induced Aβ Aggregation

et al. 2019

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The abnormal metabolism of amyloid‐β (Aβ) peptide, as one of the main components of senile plaques, plays a vital role in the pathogenesis of Alzheimer's disease (AD). Our previous work showed that polyoxometalates (POMs) that inhibited the formation of Aβ aggregates were promising for AD therapy. Here, peptide‐modified Mo polyoxometalate (Mo‐POMs) nanoparticles were synthesized by the self‐assembly of Aβ target peptide and Mo‐POMs based on our previous work. Importantly, after modifying with the Aβ target peptide, the Mo polyoxometalate (Mo‐POMs) nanoparticles exhibited enhanced blood‐brain barrier (BBB) penetration and high binding affinity with Aβ species. The interactions between the Peptide@Mo‐POMs nanoparticle and Aβ in the presence of Zn2+ were comprehensively studied using physicochemical methods (spectroscopy, ThT fluorescence, turbidity tests). Peptide@Mo‐POMs could suppress Aβ aggregation, disaggregate Aβ fibrils, and suppress Zn2+‐induced Aβ aggregation. In addition, in vitro cell experiments revealed that Peptide@Mo‐POMs could target and be well absorbed by PC12 cells, leading to the inhibition of intracellular Aβ aggregation and reduced Aβ aggregates‐induced cytotoxicity. The blood‐brain barrier (BBB) permeability of Peptide@Mo‐POMs was also revealed by the Transwell experiment. This study gives a mechanistic understanding into how Peptide@Mo‐POMs can work through a synergistic interaction with metal ions and Aβ, and provides new insights into the design and synthesis of POMs as Aβ inhibitors in the treatment of AD.

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“…[33] by intermolecular Oxa Michael addition of activated α, β-unsaturated ketones, [34] from thermal, photochemical and electrochemical transformation, [35][36] by intermolecular C-O addition of carboxylic acids to arynes, [37] by 3-hydroxy-1-(2-hydroxyphenyl)-3-arylpropan-1-ones, [38] and by multi-step reaction between substituted O-hydroxyacetophenone and substituted benzaldehyde. [39] As per the literature survey, there is no report on the synthesis of flavanones from the reaction of 2-hydroxy acetophenone and aromatic aldehydes at room temperature.…”

Section: Introductionmentioning

confidence: 99%

pH‐Transformed ZnO‐NPs /NaPTS: The First Room‐Temperature Brisk Synthesis of Flavanones in Aqueous Medium

Shinde¹,

Kamble²,

Pore

et al. 2018

ChemistrySelect

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We investigated pH transformed ZnO NPs viz ZnO nanobullets and ZnO nanograins at pH 11 and 12 respectively, synthesized by co‐precipitation method. The structural, morphological, chemical, compositional and optical properties of synthesized ZnO NPs were analysed by using X‐ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X‐ray Spectroscopy (EDAX) and Ultra‐Violate Visible spectroscopy (UV‐Vis). The Noteworthy feature of ZnO NPs in presence of NaPTS leads a speedy formation of flavanones from the reaction of an aldehyde and o‐hydroxy acetophenone. Thus, it imparted the first room‐temperature brisk synthesis of flavanones in an aqueous medium.

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A Room‐Temperature X‐ray‐Induced Photochromic Material for X‐ray Detection

Cited by 42 publications

References 23 publications

Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Peptide‐Modified Mo Polyoxometalate Nanoparticles Suppress Zn²⁺‐Induced Aβ Aggregation

pH‐Transformed ZnO‐NPs /NaPTS: The First Room‐Temperature Brisk Synthesis of Flavanones in Aqueous Medium

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A Room‐Temperature X‐ray‐Induced Photochromic Material for X‐ray Detection

Cited by 42 publications

References 23 publications

Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Visible Colorimetric Dosimetry of UV and Ionizing Radiations by a Dual-Module Photochromic Nanocluster

Peptide‐Modified Mo Polyoxometalate Nanoparticles Suppress Zn2+‐Induced Aβ Aggregation

pH‐Transformed ZnO‐NPs /NaPTS: The First Room‐Temperature Brisk Synthesis of Flavanones in Aqueous Medium

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Peptide‐Modified Mo Polyoxometalate Nanoparticles Suppress Zn²⁺‐Induced Aβ Aggregation