Azine Dyes

Berneth, Horst

doi:10.1002/14356007.a03_213.pub2

Cited by 6 publications

(3 citation statements)

References 172 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photosensitizers belonging to different chemical classes have been studied for microbiological eradication, such as halogenated xanthenes (Rose Bengal), phenothiazines (toluidine blue and MB), acridines and conjugated chlorine . MB disinfection properties are well known since the beginning of the 20th century, capable of sterilizing hospital material from most pathogens .…”

Section: Discussionmentioning

confidence: 99%

Microbiological Decontamination of Water: Improving the Solar Disinfection Technique (SODIS) with the Use of Nontoxic Vital Dye Methylene Blue

Cardoso-Rurr

Paiva

Paulino-Lima

et al. 2018

Photochem & Photobiology

View full text Add to dashboard Cite

Rational use of water is a major challenge for governments and global organizations, with easy and inexpensive interventions being sought by communities that are not supplied with drinking water. In this context, solar disinfection (SODIS) has shown great efficiency for water disinfection. To speed up the process and improve inactivation, we studied the effects of methylene blue (MB) as a photodynamic agent because of its ability to absorb visible light (red wavelength) and generate singlet oxygen as a reactive species, thereby inactivating bacteria and viruses present in water. In this study, samples of clean mineral water were artificially contaminated with Gram-positive (Staphylococcus epidermidis or Deinococcus radiodurans) or with Gram-negative strains (Escherichia coli or Salmonella typhimurium) and exposed to traditional SODIS or to MB-SODIS. A lethal synergistic effect was observed when cultures were illuminated in the presence of MB. The obtained results indicate that bacterial inactivation can be achieved in a much shorter time when using MB associated with SODIS treatment. Therefore, this technique was able to provide safe water for consumption through the inactivation of microorganisms in general, including pathogens and some strains resistant to the traditional SODIS procedure, thus allowing its use in areas usually less exposed to sunlight.

show abstract

Section: Discussionmentioning

confidence: 99%

Microbiological Decontamination of Water: Improving the Solar Disinfection Technique (SODIS) with the Use of Nontoxic Vital Dye Methylene Blue

Cardoso-Rurr

Paiva

Paulino-Lima

et al. 2018

Photochem & Photobiology

View full text Add to dashboard Cite

show abstract

“…Phenothiazine derivatives have received a wide application in biochemistry and analytical chemistry as specific dyes exert reversible redox properties and are able to concentrate in the cells and organelles. They also exert antipsychotic, antimalarial, insecticidal, antifungal, antibacterial, and anthelmintic properties [19][20][21]. The redox activity of phenothiazines used as drugs has been applied for their direct electrochemical determination [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Sensor for Doxorubicin Determination Based on Self-Assembled DNA-Polyphenothiazine Composite

Malanina,

Kuzin,

Khadieva

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

A novel voltammetric sensor based on a self-assembled composite formed by native DNA and electropolymerized N-phenyl-3-(phenylimino)-3H-phenothiazin-7-amine has been developed and applied for sensitive determination of doxorubicin, an anthracycline drug applied for cancer therapy. For this purpose, a monomeric phenothiazine derivative has been deposited on the glassy carbon electrode from the 0.4 M H2SO4-acetone mixture (1:1 v/v) by multiple potential cycling. The DNA aliquot was either on the electrode modified with electropolymerized film or added to the reaction medium prior to electropolymerization. The DNA entrapment and its influence on the redox behavior of the underlying layer were studied by scanning electron microscopy and electrochemical impedance spectroscopy. The DNA–doxorubicin interactions affected the charge distribution in the surface layer and, hence, altered the redox equilibrium of the polyphenothiazine coating. The voltametric signal was successfully applied for the determination of doxorubicin in the concentration range from 10 pM to 0.2 mM (limit of detection 5 pM). The DNA sensor was tested on spiked artificial plasma samples and two commercial medications (recovery of 90–95%). After further testing on real clinical samples, the electrochemical DNA sensor developed can find application in monitoring drug release and screening new antitumor drugs able to intercalate DNA.

show abstract

“…In this work, to address the above challenges, we propose a laser‐based technology that can produce laser‐induced heterogeneous permanent/erasable nanostructures (LIHPEN) on metals, especially noble metals, without causing ablation damage to intrinsic surfaces. During the processing, a nanosecond laser is utilized to irradiate an ink layer of Solvent Black 7 (SBk7, a traditional, low‐cost staining dye [ 42–44 ] ) coated on a metal surface. As an absorbent material, the SBk7 coating absorbs laser energy and melts, vaporizes or even carbonizes, with resulting carbonization degrees controlled by localized laser fluence and effective pulse number determining the permanent or erasable characteristic of the remaining coating layers.…”

Section: Introductionmentioning

confidence: 99%

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Zhou

Liu

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

Structural color fabrication attracting significant interest for science and art is usually restricted by costly and time‐consuming structuring processes or inerasable characteristics of structures. Herein, by developing a universal, low‐cost technical solution—the nanosecond laser irradiation of ink (Solvent Black 7) layers coated on metal—laser‐induced heterogeneous permanent/erasable nanostructures (LIHPEN) are produced successfully on multiple metals, especially noble metals, without ablation damage to intrinsic surfaces. LIHPEN consist of uniform laser‐induced periodic surface structures produced by surface plasmon polariton excitation of metals and can be extended into 2D hybrid micro/nanostructures by introducing the direct laser interference patterning technique. LIHPEN technology operated under a large processing parameter window can realize space‐selective erasability of prepared structures by controlling processing parameters, which determine the ink‐layer carbonization degree and thus the permanent or erasable characteristic. Because ink layers can be coated manually, in addition to realizing digital scanning patterns, LIHPEN technology can be integrated with traditional artistic techniques to solidify and color artworks without risk of information loss and leakage in digital copying. LIHPEN with good durability can exhibit vivid structural colors on metals, demonstrating its great potential in fields of artwork iridescent coloring, encryption, and anti‐counterfeiting, particularly those requiring customization, personalization, and rewritability.

show abstract

Azine Dyes

Cited by 6 publications

References 172 publications

Microbiological Decontamination of Water: Improving the Solar Disinfection Technique (SODIS) with the Use of Nontoxic Vital Dye Methylene Blue

Microbiological Decontamination of Water: Improving the Solar Disinfection Technique (SODIS) with the Use of Nontoxic Vital Dye Methylene Blue

Voltammetric Sensor for Doxorubicin Determination Based on Self-Assembled DNA-Polyphenothiazine Composite

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Contact Info

Product

Resources

About