N-Halogen Compounds. II.<sup>1,2</sup> The N—Cl Stretching Band in Some N-Chloroamides. The Structure of Trichloroisocyanuric Acid

Petterson, R. C.; Grzeskowiak, Urszula; Jules, Leonard H.

doi:10.1021/jo01079a030

Cited by 26 publications

(9 citation statements)

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“…In all cases, PAni presented NeH stretching at~3440 cm À1 , NeH bending in the range of 1560e1640 cm À1 , CeC stretching at 1100 cm À1 , CeC twisting at 1235 cm À1 , CeN stretching of the benzenoid at 1300 cm À1 and 1407 cm À1 , C]C stretching of the benzenoid ring in the range of 1477e1490 cm À1 , C]C stretching of the quinoid ring in the range of 1585e1599 cm À1 and the NeH outof-place deformation at 800 cm À1 [51e54]. The small peak observed between 735 and 758 cm À1 for PAni/Cl indicates the presence of NeCl [55,56], confirming the PAni was doped by Cl À . For PAni/PTS, PAni/DBS and PAni/PSS the peaks between 513 and 560 cm À1 and 1130-1140 cm À1 indicate the presence of SO 3 À , also confirming the doping [51,53,54].…”

Section: Ftirmentioning

confidence: 99%

High-performance activated carbon from polyaniline for capacitive deionization

Zornitta

García-Mateos

Lado

et al. 2017

Carbon

108

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Activated carbons prepared using polyaniline (PAni), a N-containing precursor, doped with different anions were successfully employed in this work as electrode materials for capacitive deionization. The aim of this research was to investigate the effect of chloride (Cl À ), p-toluenesulfonate (PTS À ), dodecylbenze-sulfonate (DBS À ) and polystirenesulfonate (PSS À ) as PAni dopants on the textural and electrochemical properties of PAni activate carbon (PAC) and evaluate their performance for desalination. It was demonstrated that textural PAC properties such as microporosity could be properly tuned, resulting in a suitable proportion of micro-and mesoporosity by using different doping anions. Furthermore, it was observed that the higher the oxygen content the higher the electrode hidrophilicity due to introduction of surface polar groups, as identified by XPS. These groups were found to be the most important variable influencing on the PAC electrosorption capacity and energy efficiency. The highest specific adsorption capacity (14.9 mg g À1 ), along with the lowest specific energy consumption, was obtained using the PTS-doped PAC electrode. Considering its high capacity, low-cost and ease of synthesis, PAC/PTS seems to be a promising electrode for CDI.

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Section: Ftirmentioning

confidence: 99%

High-performance activated carbon from polyaniline for capacitive deionization

Zornitta

García-Mateos

Lado

et al. 2017

Carbon

108

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“…Chlorinated compounds have been used for disinfection purposes since the early 1900s due to their effective bactericidal action . In the next few decades, the chemistry of small molecular chlorinated amines was studied in terms of synthesis, analytical detection, molecular structure, physical properties, and chemical reactions. − In 1970s, a diversity of N-chlorinated compounds was synthesized, and their antimicrobial activity started to become the focus of the research. , The first organic N -halamine compound that may be potentially applied was 2-oxazolidinone derivatives . Then the N -halamine antimicrobial agents and the polymeric materials incorporated with them were extensively studied and some of them have been applied in water treatment, polymers, and textiles due to the advantages such as high antimicrobial activity, broad spectrum, and low toxicity. − …”

Section: Introductionmentioning

confidence: 99%

Alkyl Substituted Hydantoin-Based N-Halamine: Preparation, Characterization, and Structure–Antibacterial Efficacy Relationship

Jian-guo

Yang

et al. 2016

Ind. Eng. Chem. Res.

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On the basis of the reaction of 5,5-dimethylhydantoin potassium salt with dibrominated alkane, a series of hydantoin derivatives in which two hydantoin rings are bridged by an alkyl chain with different length (C2, C6, C8, and C12) were synthesized. Upon chlorination, these compounds were transformed into hydantoin-based N-halamines. The structures of these samples were fully characterized with 1H NMR, FT-IR, UV/vis, thermal analyses, and iodometric titration. The antibacterial activity of these N-halamines was assessed with 4 × 109 CFU/mL of Gram-negative Escherichia coli under different chlorine concentrations and over different periods of contact time. It was found that the antibacterial properties and the releasing characteristics of the active chlorine of the hydantoin-based N-halamines changed obviously with increased alkyl chain length, and the factors influencing the antibacterial efficacy were discussed in terms of water solubility, steric effect, electron-donating effect, and action mechanism.

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“…The increase in the number of hydroxyl groups supports the hydrolysis of diaminotriazine end groups. The new band at 1745 cm −1 [Figure (D)] can be carbonyl stretching of the carbonyl tautomer of ammeline‐type intermediate (Figure ) . We performed a rechlorination at pH 7.0 (Table ) to prove that the formation of aminohydroxytriazine end groups during the aging and these end groups can be chlorinated better at acidic conditions.…”

Section: Resultsmentioning

confidence: 99%

Treatment of melamine formaldehyde fibers for decontaminating biological and chemical warfare agents

Kocer

Özkan

Broughton

et al. 2015

J of Applied Polymer Sci

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The demand for protection against biological and chemical warfare agents has increased the need for unique protective materials. N-halamines are superior candidates for this task by having rapid inactivation rates against a broad range of microorganisms and the ability to oxidize some pesticides and warfare agents to reduce their toxicity to humans. Thus, the design of N-halamine materials having fibrous structure, high halogen loading capacity with enhanced stability, and being relatively inexpensive is very important. This study investigated the effect of acid treatment on the chlorine loading and stability of a commercial flame retardant melamine formaldehyde (MF) fiber to introduce biocidal and detoxifying properties. The fibers formed into a web were treated with diluted sulfuric acid (H 2 SO 4 ) under various conditions. The fiber webs were chlorinated with household bleach, and the stability of bound chlorine was investigated. The treated fabrics have been tested against a Gram-negative bacterium and a warfare stimulant.

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N-Halogen Compounds. II.^1,2 The N—Cl Stretching Band in Some N-Chloroamides. The Structure of Trichloroisocyanuric Acid

Cited by 26 publications

References 0 publications

High-performance activated carbon from polyaniline for capacitive deionization

High-performance activated carbon from polyaniline for capacitive deionization

Alkyl Substituted Hydantoin-Based N-Halamine: Preparation, Characterization, and Structure–Antibacterial Efficacy Relationship

Treatment of melamine formaldehyde fibers for decontaminating biological and chemical warfare agents

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N-Halogen Compounds. II.1,2 The N—Cl Stretching Band in Some N-Chloroamides. The Structure of Trichloroisocyanuric Acid

Cited by 26 publications

References 0 publications

High-performance activated carbon from polyaniline for capacitive deionization

High-performance activated carbon from polyaniline for capacitive deionization

Alkyl Substituted Hydantoin-Based N-Halamine: Preparation, Characterization, and Structure–Antibacterial Efficacy Relationship

Treatment of melamine formaldehyde fibers for decontaminating biological and chemical warfare agents

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Product

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N-Halogen Compounds. II.^1,2 The N—Cl Stretching Band in Some N-Chloroamides. The Structure of Trichloroisocyanuric Acid