Synthesis and photochromism of isomeric unsymmetrical diarylethenes bearing both naphthalene and thiophene moieties

Photochromism of Diarylethene Molecules and Crystals: Memories, Switches, and Actuators

“…Diarylethene dimer 56, in which diarylethenes are connected with a diyne, also emits fluorescence in the isomer having one closed-ring form. 104 Many fluorescent diarylethene derivatives were prepared by introducing fluorescent units, such as indole, 256,287 furan, 77,288 oxazole, 89,289 pyrazole, 88 pyrrole, 81,257 oligothiophene, 221,258 coumarin, 259−261 and naphthalene 290,291 as the aryl group. 2-Substituted indoles are well-known to exhibit strong fluorescence.…”

“…Many fluorescent diarylethene derivatives were prepared by introducing fluorescent units, such as indole, , furan, , oxazole, , pyrazole, pyrrole, , oligothiophene, , coumarin, − and naphthalene , as the aryl group. 2-Substituted indoles are well-known to exhibit strong fluorescence. , Diarylethene derivatives having a 2-substituted indole 117 and 140 were synthesized.…”

A simplicity-guided cocktail approach toward multicolor fluorescent systems

“…In fact, we know of only two reported examples with a higher number. ‡ 35,36 These compounds, however, suffer from a UV-induced photostationary state poorly enriched in the closed form, implying that ''on-off'' switching of the emission is not possible.…”