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Anomalously large heat generation of hydration water 1 under microwave
https://repo.qst.go.jp/records/2001126
https://repo.qst.go.jp/records/2001126c8bd50e6-c261-4269-8d7f-5e2881a438fa
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-06-12 | |||||||
| タイトル | ||||||||
| タイトル | Anomalously large heat generation of hydration water 1 under microwave | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| 著者 |
Murakami Hiroshi
× Murakami Hiroshi
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Much attention has been paid to biological effects of microwave irradiation. The hydration water surrounding a biomolecule plays a crucial role in its biological reactions and functions. Therefore, it is important to know the response of hydration water to microwaves in order to understand their biological effects; however, the scarcity of studies about it often leads to speculations and debates about that effect. In this study, we have made real-time temperature measurements of reverse micellar solutions with their water-droplet size from ~2.3 nm to ~9.5 nm by using a waveguide system combined with a microwave generator at 2.45 GHz. The heat generated by water in reverse micelles has been observed to depend on their size. It is about ten times larger than that of liquid water at their small sizes (<~3.5 nm), and diminishes with further enlarging the size, approaching the water’s value at their large sizes (~10 nm). These results indicate that the heat generation behavior has an interfacial effect, specifically, the hydration water on the surfactant layer produces heat ten times larger than bulk water. Moreover, the hydration number per surfactant molecule decreases with increasing the reverse micelle size in a core-shell model. These features are also reflected in the heat generation rate. Our findings may offer a new and fundamental perspective for studies on the biological effects of microwave irradiation. |
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| 書誌情報 |
The Journal of Physical Chemistry 発行日 2024-03 |
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| DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | https://doi.org/10.1021/acs.jpcb.3c07759 | |||||||
