Photoresponsive Tweezers for Alkali Metal Ions. Photochromic Diarylethenes Having Two Crown Ether Moieties

Alkali metal ion effect on the photochro

Alkali metal ion effect on the photochromism of 1,2-bis(2,4-dimethylthien-3-yl)-perfluorocyclopentene having benzo-15-crown-5 moieties

✍ Michinori Takeshita; Chai Fong Soong; Masahiro Irie 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 210 KB

The photocyclization quantum yield of 1,2-bis(2,4-dimethylthien-3yl)perfluorocyclopentene having two benzo-15-crown-5 ethers was decreased by the addition of potassium and rubidium perchlorates, and the decrease is ascribed to the increase of the photoinactive parallel conformation ratio by the intr