Development of Red‐Shifted and Fluorogenic Nucleoside and Oligonucleotide Diarylethene Photoswitches
作者:Theresa Kolmar、Antonia Becker、Ronja A. Pfretzschner、Alina Lelke、Andres Jäschke
DOI:10.1002/chem.202103133
日期:2021.12.9
The core structure of nucleoside based diarylethenes was modified, with the aim of bathochromically shifting the absorption wavelength in the visible range (λmax,vis) and to introduce photomodulatable fluorescence. Extending the π-system of the bridging unit resulted in a desired red shift of λmax,vis and fluorogenicity could be obtained by the introduction of a fluorescent adenosine analogue.
Syntheses and Substituent Effects on the Properties of Unsymmetrical Photochromic Diarylethenes Bearing a Benzothiophene Unit
作者:Shouzhi Pu、Min Li、Gang Liu、Zhanggao Le
DOI:10.1071/ch08289
日期:——
Photochromic unsymmetrical diarylethenes 1a–5a that bear different electron-donating or electron-withdrawing substitutes have been synthesized, and the structures of 2a–5a determined by single-crystal X-ray diffraction analysis. Substituent effects on their optoelectronic properties, including photochromism, fluorescence, and electrochemical properties are investigated in detail. The strong electron-donating
Abstract Six new unsymmetrical diarylethenes having both benzothiophene and n -alkylthiophene units have been synthesized. The structures of diarylethenes 2a – 6a were determined by single-crystal X-ray diffraction analysis. The results showed that the alkyl chain length had a significant effect on the optoelectronic properties of these diarylethenes, including photochromism, fatigue resistance, fluorescence