Susceptibility of environmentally important heterocycles to chemical disinfection: reactions with aqueous chlorine, chlorine dioxide, and chloramine

Lin, Sechoing; Carlson, Robert M. K.

doi:10.1021/es00128a005

Cited by 39 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this reaction, sodium hypochlorite is the oxidant and converts thiophene (A) in PEDOT [43] to its corresponding thiophene-1-oxide (B). Spontaneously, thiophene-1-oxide (B) is converted to its corresponding thiophene-1,1-dioxide (C).…”

Section: Reaction Of Sodium Hypochlorite and Pedot-pssmentioning

confidence: 99%

“…The thiophene-1-oxide (B) is presumed to be a reaction intermediate to thiophene-1,1-dioxide (C). [43,44] Finally, further oxidation of thiopene-1,1-dioxide (C) causes the extrusion of SO 2 In Figure 13, the FT-IR spectra of the treated (oxidized) PEDOT-PSS film and the pristine PEDOT-PSS film are compared over a range of wavenumbers from 500 to 4 000 cm À1 . Minor differences in relative band intensities are observed.…”

Section: Reaction Of Sodium Hypochlorite and Pedot-pssmentioning

confidence: 99%

See 1 more Smart Citation

Simple Modification of Sheet Resistivity of Conducting Polymeric Anodes via Combinatorial Ink‐Jet Printing Techniques

Yoshioka

Calvert

Jabbour

2005

Macromol. Rapid Commun.

111

View full text Add to dashboard Cite

Summary: Due to its capability of dispensing very small volumes of different liquids in a controlled manner, ink‐jet printing is well suited for combinatorial experiments. The multi‐nozzle ink‐jet delivery system is especially advantageous for parallel chemical synthesis of different materials. We have used ink‐jet printing of an oxidizing agent to pattern a pre‐coated conducting polymer, poly(3,4‐ethylenedioxy)‐thiophene‐poly(styrene sulfonate) (PEDOT‐PSS), yielding electrodes with predefined shapes and a controlled degree of sheet resistivity for use in gray‐scale organic light‐emitting devices (OLEDs). The electrical and optical properties of the PEDOT‐PSS layer are modified via chemical interaction using the oxidizing agent. These experiments were performed using a desktop ink‐jet printer in conjunction with common graphic software which employed color functions such as CMY (cyan, magenta and yellow), HSL (hue, saturation and luminosity) and RGB (red, green and blue).Photographs of gray‐scale OLEDs patterned on PEDOT‐PSS surfaces by an ink‐jet printer on plastic substrates.magnified imagePhotographs of gray‐scale OLEDs patterned on PEDOT‐PSS surfaces by an ink‐jet printer on plastic substrates.

show abstract

Section: Reaction Of Sodium Hypochlorite and Pedot-pssmentioning

confidence: 99%

Section: Reaction Of Sodium Hypochlorite and Pedot-pssmentioning

confidence: 99%

Simple Modification of Sheet Resistivity of Conducting Polymeric Anodes via Combinatorial Ink‐Jet Printing Techniques

Yoshioka

Calvert

Jabbour

2005

Macromol. Rapid Commun.

111

View full text Add to dashboard Cite

show abstract

“…For example, the most widely used disinfectants, which are free chlorine and the many combined chlorine compounds that liberate free chlorine in water such as the hydantoins and isocyanurates, have brief useful lifetimes in water, especially in sunlight, and can react with organic impurities to produce trihalomethanes, which have been linked to cancer in laboratory animals via oral ingestion (Brodtmann and Russo, 1979;Vogt and Regli, 1981;Cotruvo, 1982). Chlorine dioxide and ozone are other potent antimicrobial agents, but they also do not provide long-term residuals, and being strong oxidizing agents, they could react with certain organics in water to produce byproducts with unknown health risks when consumed (Vogt and Regli, 1981;Bull, 1980;Lin and Carlson, 1984;Olivieri et al, 1986;Bercz et al, 1982). Thus the goal in our laboratories for the past decade has been to develop a stable, new disinfectant for general-purpose use in water and on hard surfaces.…”

Section: Introductionmentioning

confidence: 99%

Novel N‐Halamine Disinfectant Compounds

Tsao

Williams

Worley

et al. 1991

Biotechnology Progress

View full text Add to dashboard Cite

A new series of N-halamine compounds has been synthesized and tested for stability in aqueous solution and efficacy in inactivating several species of bacteria and algae.The compounds, which are N,N'-dihalo-4-imidazolidinones, are inexpensive t o synthesize and appear to have considerable potential as general-purpose disinfectants. They have greater stability in the laboratory, as well as outdoors in direct sunlight, than do current commercial swimming pool biocides. They also are efficient at sterilizing hard surfaces (stainless steel) and could thus be useful for a variety of household and medical disinfection applications.

show abstract

“…For example, the reaction mixtures of CIO, with hydroxyproline, tyrosine, aspartame, L-glycyl-L-tryptophan or L-tryptophylglycine were found to be mutagenic in the Ames Safmonellu/microsome assay (Tan et al, 1987b). The reaction of tryptophan and other indole derivatives with aqueous chlorine has been studied (Lin and Carlson, 1984;Tan et al, 1987a;Trehy et al, 1986) as well as with CIOz (Fujii and Ukita, 1957;Tan et al, 1987b). However, the effect of the distinct functional groups on the reaction rates has not been fully elucidated.…”

Section: Introductionmentioning

confidence: 99%

Reactions of Aqueous Chlorine and Chlorine Dioxide with Tryptophan, N‐Methyltryptophan, and 3‐Indolelactic Acid: Kinetic and Mutagenicity Studies

Sen

Owusu-Yaw

Wheeler

1989

Journal of Food Science

View full text Add to dashboard Cite

Reactions of tryptophan, N-methyltryptophan and 3-indolelactic acid with aqueous chlorine or chlorine dioxide (CIO,) in O.lM potassium phosphate buffer, pH 6.0, were investigated to determine any structural relationships with regards to kinetics and mutagenicity. The rcaction with CIOz followed pseudo-first order kinetics, with the halflife of the respective compounds being 36, 22, and 8 milliseconds. The formation of a dark precipitate in the reaction of tryptophan with HOC1 precluded any kinetic comparison. The reaction products of tryptophan with hypochlorous acid (HOCI) or CR& were mutagenic to Solmoneffu fyphimurium TA98 and TAIOO; while those of N-mcthyltryptophan with HOCI and CIOz were mom mutagenic toward TA98. Higher recoveries of the reaction products were achieved by passing the acidified (pH 2.5) mixture through an XAD-g/XAD-2 resin column.

show abstract

Susceptibility of environmentally important heterocycles to chemical disinfection: reactions with aqueous chlorine, chlorine dioxide, and chloramine

Cited by 39 publications

References 34 publications

Simple Modification of Sheet Resistivity of Conducting Polymeric Anodes via Combinatorial Ink‐Jet Printing Techniques

Simple Modification of Sheet Resistivity of Conducting Polymeric Anodes via Combinatorial Ink‐Jet Printing Techniques

Novel N‐Halamine Disinfectant Compounds

Reactions of Aqueous Chlorine and Chlorine Dioxide with Tryptophan, N‐Methyltryptophan, and 3‐Indolelactic Acid: Kinetic and Mutagenicity Studies

Contact Info

Product

Resources

About