Improved Singlet Oxygen Detection Sensitivity in Electron Spin Resonance Using a Spin-trap Agent Incorporated into a Water-soluble Polymer Film

Hosoya, Kazuki; Yenchit, Saranya; Tadokoro, Yuta; Oya, Kei; Iwamori, Satoru

doi:10.1246/cl.180488

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The data verified that some of the 1 O 2 reached the DC film through the DE film without deactivation. It has been reported that active oxygen species diffuse at least 100 μm into a hydroxypropyl methylcellulose (HPMC) film (40). Our data proved that 1 O 2 was able to move between the different polymer layers.…”

Section: Diffusion Of 1 O 2 In the Polymer Filmssupporting

confidence: 75%

Penetration of Singlet Oxygen into Films with Oxygen Permeability Coefficient Close to that of Skin

Harada

Kataoka

Nakanosho

et al. 2021

Photochem & Photobiology

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Although its antiviral and antibacterial functions help prevent infection, singlet oxygen ( 1 O 2 )-which is generated by the action of light on an endogenous photosensitizer-is cytotoxic. In the present study, we investigated the ability of 1 O 2 -generated by the action of visible light on a photosensitizer-to penetrate skin. We used two polymer films with oxygen permeability coefficients similar to that of skin-i.e. cellulose acetate (CA) and ethyl cellulose (EC). Both films contained 1,3-diphenylisobenzofuran (DPBF), which was used as an 1 O 2 probe. 1 O 2 generated externally did not permeate the films by mere contact. Therefore, we conclude that the potential for 1 O 2 to penetrate the skin is very low, and films that generate 1 O 2 are safe and useful for preventing infections by contact. We also proved that 1 O 2 can move between the layers of integrated polymer films when they are joined together.

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Section: Diffusion Of 1 O 2 In the Polymer Filmssupporting

confidence: 75%

Penetration of Singlet Oxygen into Films with Oxygen Permeability Coefficient Close to that of Skin

Harada

Kataoka

Nakanosho

et al. 2021

Photochem & Photobiology

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“…In a previous study, we examined the chemical reactions and decolorization mechanism associated with the exposure of the optimized MB-pullulan structures to OH* [15][16][17][18]. We show the results that provided insight into possible interaction modes that allow AOS detection under various conditions.…”

Section: Discussionmentioning

confidence: 94%

Molecular Interactions between Methylene Blue and Sodium Alginate Studied by Molecular Orbital Calculations

2021

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A methylene blue (MB) indicator embedded in sodium alginate (SA) film was previously examined for detecting active oxygen species. In a previous study, spectrometry was used to identify and characterize the MB/SA complex. However, the decolorization mechanism was not fully assessed. In this study, our aim is to conduct computational calculations at the B3LYP/6-31G(d) level to clarify the exact types and positions of the interaction that cause the decolorization in MB. The results demonstrate that MB/SA interacts with carboxylates (-COO(superscript)-(superscript)) of SA and the N, C, and S atoms of MB, confirming previous experimental observations.

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Detection methodologies and mechanisms of reactive oxygen species generated in Fenton/Fenton-like processes

Zhang,

Liu,

Pan

et al. 2025

Separation and Purification Technology

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Improved Singlet Oxygen Detection Sensitivity in Electron Spin Resonance Using a Spin-trap Agent Incorporated into a Water-soluble Polymer Film

Cited by 3 publications

References 9 publications

Penetration of Singlet Oxygen into Films with Oxygen Permeability Coefficient Close to that of Skin

Penetration of Singlet Oxygen into Films with Oxygen Permeability Coefficient Close to that of Skin

Molecular Interactions between Methylene Blue and Sodium Alginate Studied by Molecular Orbital Calculations

Detection methodologies and mechanisms of reactive oxygen species generated in Fenton/Fenton-like processes

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