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Near‐Neutral pH Sensing by Azoheteroarene Dyes.

  • Published In: Chemistry - A European Journal, 2025, v. 31, n. 21. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Hashim, P. K.; Ahmad, Shifa; Madappuram Cheruthu, Nusaiba; Sahu, Saugata; Tamaoki, Nobuyuki 3 of 3

Abstract

We serendipitously discovered a novel series of azoheteroarene dyes capable of detecting pH variations in near‐neutral solutions. These dyes feature thiazole, thiadiazole, triazole, pyrazole, or benzothiazole heteroaryls linked to hydroxyphenyl azo groups. They exhibit distinctive light absorption properties in aqueous solutions and show notable color changes in a narrow pH range, visible to the naked eye. Both experimental data and quantum calculations suggest a plausible mechanism for their function as pH indicators. Additionally, these azoheteroarene dyes effectively monitor pH in complex environments, and we show their use for detecting the pH change of culture medium containing growing cancer cells. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Chemistry - A European Journal. 2025/04, Vol. 31, Issue 21, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2025
  • ISSN:0947-6539
  • DOI:10.1002/chem.202403897
  • Accession Number:184339215
  • Copyright Statement:Copyright of Chemistry - A European Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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