Novel colloidal materials from functionalized polyoxometalates

Swenson, LaSalle; Orozco, Jose C.; Liu, Yuzi; Darling, Seth B.; Khan, M. Ishaque

doi:10.1016/j.inoche.2017.07.005

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…Polyoxometalates (POMs) are an oxygen-rich class of inorganic cluster systems that exhibit remarkable chemical and physical properties, and have many promising applications in various fields, such as for catalysis, materials and medicines [1][2][3]. Recently, numerous reviews have discussed the design and properties of hybrid POMs in a range of systems, such as polymeric materials [4,5], surfactants [6], photocatalysts for mustard [7] and dye degradation [8], electron transport layers [9], enzyme mimics [10], and photoelectrochemical applications [11,12].…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

Chang

Wang

2019

Journal of Inorganic Biochemistry

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A B S T R A C T Nanohybrid membranes based on the Keggin-type polyoxometalate (POM) H 5 PV 2 Mo 10 O 40 and aminosilanemodified silicate (Ormosil and Ormosil(NR 4 + Cl − )) hybrids were synthesized as a new barrier to protect against simulants of chemical and biological toxicant. The 31 P NMR and XPS results indicated that POM was bound to the Ormosil and Ormosil(NR 4 + Cl − ) hybrids after impregnation. The antibacterial effects of the hybrids and hybrid-impregnated fabrics against Gram-negative and Gram-positive bacteria were investigated with zone of inhibition, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and platecounting method. The MIC/MBC values of Ormosil(NR 4 + Cl − )/POM and Ormosil/POM against bacteria were 0.267/2.67 and 2.67/26.7, respectively, and the percentage reduction of bacteria was approximately 100% after 20 laundry cycles of their fabrics. The reaction products and mechanisms of the adsorptive degradation of 2chloroethylethylsulfide (CEES) by hybrids were investigated with 13 C NMR. The results of this study showed that POM-doped Ormosil systems are capable of destroying bacteria and CEES. + Cl − )/POM hybrids, have proved advantageous as a new type of insoluble antimicrobial polymer, because they have a greater antimicrobial activity and better durability in water than other conventional antimicrobial polymers. They have proved kill a broad range https://doi.

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Section: Introductionmentioning

confidence: 99%

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

Chang

Wang

2019

Journal of Inorganic Biochemistry

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“…Polyoxometalates (POMs) are a diverse group of metal–oxygen clusters formed by oxygen bonding of transition-metal ions (such as Mo, W, V, Nb, etc. ), which have been discovered over the past 200 years . To date, 10 basic topology structures of POMs (Keggin, Dawson, Silverton, Anderson, Waugh, Lindqvist, Weakley, Standberg, Finke, and Preyssler) have been discovered, with Keggin and Dawson structures being most extensively studied. – Recently, emerging multidisciplinary research in POM chemistry further revealed a series of POM clusters with novel topologies and high-dimensional extended architectures, such as lanthanide-functionalized POMs, – POM-based supramolecular frameworks, POM-based inorganic–organic hybrids, – etc.…”

Section: Introductionmentioning

confidence: 99%

“…Polyoxometalates (POMs) are a diverse group of metal−oxygen clusters formed by oxygen bonding of transition-metal ions (such as Mo, W, V, Nb, etc. ), 1 which have been discovered over the past 200 years. 2 To date, 10 basic topology structures of POMs (Keggin, Dawson, Silverton, Anderson, Waugh, Lindqvist, Weakley, Standberg, Finke, and Preyssler) have been discovered, 3 with Keggin and Dawson structures being most extensively studied.…”

Section: Introductionmentioning

confidence: 99%

K₆[P₂Mo₁₈O₆₂] as DNase-Mimetic Artificial Nucleases to Promote Extracellular Deoxyribonucleic Acid Degradation in Bacterial Biofilms

Lin,

Li,

Zhou

et al. 2023

ACS Omega

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In the current study, the DNase-like activity of the Dawson-type polyoxometalate K 6 [P 2 Mo 18 O 62 ] was explored. The obtained findings demonstrated that K 6 [P 2 Mo 18 O 62 ] could effectively cleave phosphoester bonds in the DNA model substrate (4-nitrophenyl phosphate) and result in the degradation of plasmid DNA. Moreover, the application potential of this Dawson-type polyoxometalate as a DNase-mimetic artificial enzyme to degrade extracellular DNA (eDNA) in Escherichia coli (E. coli) bacterial biofilm was explored. The results demonstrated that K 6 [P 2 Mo 18 O 62 ] exhibited high cleavage ability toward eDNA secreted by E. coli and thus eradicated the bacterial biofilm. In conclusion, Dawson-type polyoxometalate K 6 [P 2 Mo 18 O 62 ] possessed desirable DNase-like activity, which could serve as a bacterial biofilm eradication agent by cleaving and degrading eDNA molecules.

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“…In particular, polyoxometalates, a group of discrete polynuclear early transition metal oxide clusters [6], have been widely reported as potential antibacterial agents against numerous food-borne bacteria [7]. Moreover, studies also revealed that polyoxometalates not only exert a significant bactericidal activity themselves, but also exhibit strong synergistic antibacterial effects together with conventional antibiotics [8,9].…”

Section: Introductionmentioning

confidence: 99%

Polyoxometalate K6[P2Mo18O62] Inactivates Escherichia coli O157:H7 by Inducing recA Expression and Apoptosis-like Bacterial Death

Lin

Zhou

et al. 2023

IJMS

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Polyoxometalates have emerged as promising bactericidal agents. In the current study, the bactericidal activity of polyoxometalate K6[P2Mo18O62] against Escherichia coli (E. coli) O157:H7 and its possible underlying mechanisms were explored. The obtained results demonstrated that K6[P2Mo18O62] could effectively kill E. coli O157:H7 at millimolar levels. Moreover, K6[P2Mo18O62] treatment also induced significant increases in recA protein expression and further triggered characteristic apoptosis-like bacterial death events such as DNA fragmentation and phosphatidylserine exposure. In conclusion, polyoxometalate K6[P2Mo18O62] possesses a desirable antibacterial activity, and induction of bacterial apoptosis-like death might be involved in its underlying bactericidal mechanisms.

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Novel colloidal materials from functionalized polyoxometalates

Cited by 3 publications

References 24 publications

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

K₆[P₂Mo₁₈O₆₂] as DNase-Mimetic Artificial Nucleases to Promote Extracellular Deoxyribonucleic Acid Degradation in Bacterial Biofilms

Polyoxometalate K6[P2Mo18O62] Inactivates Escherichia coli O157:H7 by Inducing recA Expression and Apoptosis-like Bacterial Death

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Novel colloidal materials from functionalized polyoxometalates

Cited by 3 publications

References 24 publications

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

Preparation of polyoxometalate-doped aminosilane-modified silicate hybrid as a new barrier of chem-bio toxicant

K6[P2Mo18O62] as DNase-Mimetic Artificial Nucleases to Promote Extracellular Deoxyribonucleic Acid Degradation in Bacterial Biofilms

Polyoxometalate K6[P2Mo18O62] Inactivates Escherichia coli O157:H7 by Inducing recA Expression and Apoptosis-like Bacterial Death

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K₆[P₂Mo₁₈O₆₂] as DNase-Mimetic Artificial Nucleases to Promote Extracellular Deoxyribonucleic Acid Degradation in Bacterial Biofilms