Nucleoside‐Based Diarylethene Photoswitches and Their Facile Incorporation into Photoswitchable DNA

Come into the light: Pyrimidine nucleosides were found to undergo fast and reversible ring closure upon irradiation with light when covalently attached to 2-[2-methyl-5-phenylthien-3-yl]cyclopent-1-ene (see scheme). Synthesis using an aqueous-phase Suzuki–Miyaura cross-coupling allows for one-step conversion of iodo-modified oligonucleotides into fully reversible DNA photoswitches. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.