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A Visible‐Light‐Responsive Fluorescent Diarylethene Having a Betaine Structure.

  • Published In: Chemistry - A European Journal, 2024, v. 30, n. 72. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Nishimura, Ryo; Kaisho, Naoki; Morimoto, Masakazu 3 of 3

Abstract

As a new molecular scaffold of photoswitchable fluorophore, we developed a photochromic diarylethene containing a betaine structure based on pyridinium N‐enolate. A facile reaction of a pyridyl‐substituted dithienylperfluorocyclopentene derivative with octafluorocyclopentene constructed the betaine structure. The introduction of the betaine moiety provided the diarylethene molecule with bathochromically shifted optical absorption and fluorescing ability, thus enabling the molecule to function as a visible‐light‐responsive turn‐off mode photoswitchable fluorophore. The molecule in the open‐ring form emitted bright bluish green fluorescence. Upon irradiation with 405 nm light, the molecule underwent cyclization isomerization to form the closed‐ring isomer and the fluorescence intensity significantly decreased. The turn‐off mode fluorescence photoswitching was observed not only in solution but also in polymer films. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Chemistry - A European Journal. 2024/12, Vol. 30, Issue 72, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2024
  • ISSN:0947-6539
  • DOI:10.1002/chem.202403076
  • Accession Number:181824849
  • 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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