Photoresponsive complexing stilbene α,α′ disubstituted by ethylene dioxy side arms

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

“…Various kinds of photoresponsive host molecules having photochromic bis-anthracene, azobenzene, , thioindigo, stilbene, or bis-spiropyran as a photoswitch have been synthesized, and switching of host−guest events by use of the host molecules has been investigated. All photochromic compounds used so far for the photoresponsive host molecules are thermally reversible and their durability is limited.…”

Photoswitchable molecular tweezers: isomerization to control substrate binding, and what aboutvice versa?

“…Where parent stilbene has been modified in an early stage with ethylenedioxy-substituents to extract alkali metal cations, 57 and more recently with porphyrins to sequester fullerene, 58 it is known to undergo undesired 6π-electrocyclization upon prolonged irradiation with UV light. 6 a The fused five-membered ring analogue, i.e.…”

(Z)-α,β-Dimethoxystilbene

“…Tomahogh (1977). The structures of the sulfur analogues (E)-and (Z)-l,2-bis(methylthio)-l,2-diphenylethylene (Adiwidjaja, Kistenbrugger & Voss, 1981) and those of cis-and trans-l,2-bis(methoxyethoxy)-1,2-diphenylethylene (Soumillion, Weiler, De Man, Touillaux, Declercq & Tinant, 1989) have been reported.…”