Fabrication of lanthanide decatungstate [LnIII/IV(W5O18)2]8−/9− (Ln=CeIV/III, EuIII, and ErIII) thin films using spin-coating from aqueous solutions

Fujita, Yusuke; Ishihara, Noritaka; Fukaya, Keisuke; Srifa, Atthapon; Naruke, Haruo

doi:10.1016/j.jallcom.2011.12.140

Cited by 10 publications

(1 citation statement)

References 20 publications

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“…Many heteroatoms can be incorporated into a POM framework, including Gd, Mn and Cu, to impart various properties. [36][37][38][39] These nanoclusters can then be used in biomedical, [40][41][42][43][44][45][46][47][48][49] analytical, [50][51][52][53][54] magnetic, [55][56][57][58][59][60] optical 61,62 and catalytic applications. [63][64][65][66][67] For example, paramagnetic rare earth elements such as Gd 3+ can be easily incorporated into polytungstate (a type of POM) structures to form new molecules.…”

Section: Introductionmentioning

confidence: 99%

Gadolinium polytungstate nanoclusters: a new theranostic with ultrasmall size and versatile properties for dual-modal MR/CT imaging and photothermal therapy/radiotherapy of cancer

et al. 2016

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The development of a new generation of nanoscaled theranostics with simple compositions and versatile properties to realize enhanced diagnoses and treatment outcomes and to avoid side effects is highly desirable but remains a great challenge. Here we report a new ultrasmall theranostic based on bovine serum albumin-coated GdW 10 O 36 nanoclusters (GdW 10 NCs) as multifunctional theranostics for multifunctional bio-imaging, highly effective in vitro photothermal ablation of cancer cells and in vivo radiotherapy of tumors. The as-synthesized GdW 10 NCs afford significantly enhanced computed tomography/magnetic resonance imaging signals and remarkable photothermal therapy (PTT)/radiotherapy therapy (RT) therapeutic effects for tumor treatment. Moreover, toxicity studies confirmed their low toxicity and efficient renal clearance, suggesting their potential for practical applications. These results indicated that the as-prepared GdW 10 nanoclusters are promising as multifunctional nanotheranostics for multimodal imaging-guided PTT/RT of tumors. These results also encourage the further exploration of other polyoxometalate-based multifunctional nanotheranostics for cancer diagnoses and therapy.

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Section: Introductionmentioning

confidence: 99%

Gadolinium polytungstate nanoclusters: a new theranostic with ultrasmall size and versatile properties for dual-modal MR/CT imaging and photothermal therapy/radiotherapy of cancer

et al. 2016

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Hydrolysis of Dipeptides Catalyzed by a Zirconium(IV)‐Substituted Lindqvist Type Polyoxometalate

Absillis

Bajpe

et al. 2013

Eur J Inorg Chem

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The hydrolysis of a series of unactivated dipeptides in the presence of a zirconium(IV)‐substituted Lindqvist type polyoxometalate, (Me4N)2[W5O18Zr(H2O)3] (designated as ZrW5), was studied by kinetic experiments and NMR spectroscopy. Among the dipeptides examined, those with the X–Ser amino acid sequence were most effectively hydrolyzed. The kinetics of the hydrolysis of histidylserine (His–Ser) was studied in detail; a rate constant of 95.3 (± 0.1) × 10–7 s–1 (pD 7.4 and 60 °C) in the presence of an equimolar amount of ZrW5 was calculated. The binding of His–Ser to ZrW5 was examined by UV/Vis, 1H, 13C, and 183W NMR spectroscopy, and the data indicate that at physiological pD His–Ser chelates the ZrIV through its imidazole nitrogen, amine nitrogen, and amide carbonyl oxygen. In the presence of ZrW5, the pD profile of kobs is bell‐shaped, with a maximum reaction rate at pD 7.5. At high pD values an inactive complex is formed as a result of the deprotonation of the amide nitrogen, resulting in inhibition of His–Ser hydrolysis. The effects of pH, temperature, inhibitors, and ionic strength on the hydrolysis rate constant were also investigated, and a full account of the mechanism of this novel reaction is given.

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Recent advances in lanthanide-coordinated polyoxometalates: from structural overview to functional materials

Granadeiro

Julião²,

Ribeiro³

et al. 2023

Coordination Chemistry Reviews

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Fabrication of lanthanide decatungstate [LnIII/IV(W5O18)2]8−/9− (Ln=CeIV/III, EuIII, and ErIII) thin films using spin-coating from aqueous solutions

Cited by 10 publications

References 20 publications

Gadolinium polytungstate nanoclusters: a new theranostic with ultrasmall size and versatile properties for dual-modal MR/CT imaging and photothermal therapy/radiotherapy of cancer

Gadolinium polytungstate nanoclusters: a new theranostic with ultrasmall size and versatile properties for dual-modal MR/CT imaging and photothermal therapy/radiotherapy of cancer

Hydrolysis of Dipeptides Catalyzed by a Zirconium(IV)‐Substituted Lindqvist Type Polyoxometalate

Recent advances in lanthanide-coordinated polyoxometalates: from structural overview to functional materials

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