Study of molecular iodine, iodate ions, iodide ions, and triiodide ions solutions absorption in the UV and visible light spectral bands

Kireev, S V; Shnyrev, S L

doi:10.1088/1054-660x/25/7/075602

Cited by 85 publications

(57 citation statements)

References 15 publications

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“…Such poisoning can potentially damage the kidney, liver and other human organs and may progress to thyroid cancer [6]. Furthermore, they can result in long-term issues since the radioactive elements possess long half-life time and bioaccumulation [1,7,8]. Besides radioactive iodide, another source of contamination comes from the tablets used for the purification of water, which contain iodine [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

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In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5–25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30–1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

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Section: Introductionmentioning

confidence: 99%

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

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“…All polymers show characteristic strong signals at 300 nm corresponding either to the organic backbone or to iodine species. [32] The broadband from 650 nm with a tail extending into the near-infrared region consistent with the absorbance of neutral PEDOT (650 nm), the polaron (900 nm), and the bipolaron bands (after 1100 nm), which are characteristic of oxidized PEDOT. [33,34] The intensity ratio of the polaron and bipolaron band of the homopolymer is higher than the copolymers, suggesting that the homopolymer PEDOT-N has the highest doping level.…”

Section: (Co)polymerization and Characterization Of Water Soluble Catmentioning

confidence: 70%

Water Soluble Cationic Poly(3,4‐Ethylenedioxythiophene) PEDOT‐N as a Versatile Conducting Polymer for Bioelectronics

Minudri

Mantione

Dominguez‐Alfaro

et al. 2020

Adv Elect Materials

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conducting polymer with the biggest prospects in the emerging field of bioelectronics due to their combination of characteristics (mixed conductivity, stability, transparency, and biocompatibility). [1] In this emerging field, PEDOT is currently being investigated in a number of new applications such as conducting hydrogels, biosensors, organic electrochemical transistors, selective detachment of cells, scaffolds for tissue engineering, electrodes for electrophysiology, implantable electrodes, stimulation of neuronal cells, electronic skin, or pan-bio electronics. [2] The most used PEDOT version is the commercially available aqueous dispersion poly(3,4-ethylen edioxythiophene):poly(styrene sulfonate) (PEDOT: PSS) which is usually processed by casting or spin-coating. However, in order to well connect the two fields of biology and electronics, [3] PEDOT:PSS presents some limitations associated with the low (bio)functionality of the PEDOT polymer and acidity/toxicity of the PSS stabilizer. [4-7] For this reason, in the last few years a number of functional EDOT monomer derivatives has been synthesized including hydroxymethyl, [8] chloromethyl, [9] azidomethyl, [10] carboxylic Poly(3,4-ethylenedioxythiophene) (PEDOT) is the most popular conducting polymer in the emerging field of bioelectronics. Besides its excellent properties and commercial availability, its success is due to the aqueous processability of its anionically stabilized solutions or dispersions. In this work, a water soluble version of PEDOT is shown, which is cationically stabilized. This work reports the chemical oxidative (co)polymerization of EDOT-ammonium derivative leading to PEDOT-N (co)polymers. PEDOT-N shows the typical features of PEDOT such as UV absorbance, bipolaron band, electrical conductivity, electrochemical behavior, and film formation ability. Furthermore, the PEDOT-N films show good biocompatibility in the presence of the human embryonic kidney-293 cell line. The water solubility of PEDOT-N and its cationic nature allows its processability in the form of thin films obtained by the layer-by-layer technique or as conducting hydrogels.

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“…Scanning of different dilutions of 1% ITC in the range of 190–700 nm wavelengths showed that 1/2 and 1/5 diluted solutions had two peaks at about 288 and 354 nm, which are known to be bands of tri-iodide ions (Gazda et al, 2004; Wei et al, 2005; Mazumdar et al, 2010; Mertes et al, 2012; Kireev and Shnyrev, 2015). However, characteristic bands of I 2 at about 203 (Wei et al, 2005) and 460 nm (Wei et al, 2005; Kireev and Shnyrev, 2015) were not distinguishable in all the measured dilutions of ITC.…”

Section: Resultsmentioning

confidence: 99%

Antibacterial Potential of an Antimicrobial Agent Inspired by Peroxidase-Catalyzed Systems

et al. 2017

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Antibiotic resistance is an increasingly serious threat to global health. Consequently, the development of non-antibiotic based therapies and disinfectants, which avoid induction of resistance, or cross-resistance, is of high priority. We report the synthesis of a biocidal complex, which is produced by the reaction between ionic oxidizable salts—iodide and thiocyanate—in the presence of hydrogen peroxide as an oxidation source. The reaction generates bactericidal reactive oxygen and iodine species. In this study, we report that the iodo-thiocyanate complex (ITC) is an effective bactericidal agent with activity against planktonic and biofilm cells of Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus and methicillin-resistant S. aureus) bacteria. The minimum bactericidal concentrations and the minimum biofilm eradication concentrations of the biocidal composite were in the range of 7.8–31.3 and 31.3–250 μg ml−1, respectively. As a result, the complex was capable to cause a rapid cell death of planktonic test cultures at between 0.5 and 2 h, and complete eradication of dual and mono-species biofilms between 30 s and 10 min. Furthermore, the test bacteria, including a MRSA strain, exposed to the cocktail failed to develop resistance after serial passages. The antimicrobial activity of the ITC appears to derive from the combinational effect of the powerful species capable of oxidizing the essential biomolecules of bacteria. The use of this composition may provide an effective and efficient method for killing potential pathogens, as well as for disinfecting and removing biofilm contamination.

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Study of molecular iodine, iodate ions, iodide ions, and triiodide ions solutions absorption in the UV and visible light spectral bands

Cited by 85 publications

References 15 publications

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Water Soluble Cationic Poly(3,4‐Ethylenedioxythiophene) PEDOT‐N as a Versatile Conducting Polymer for Bioelectronics

Antibacterial Potential of an Antimicrobial Agent Inspired by Peroxidase-Catalyzed Systems

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