Photochemically inactive diarylethene derivatives having a N-(O-hydroxyphenyl) group underwent photochromic reaction when they were esterified by the addition of acetic anhydride.

A fluorescent photochromic compound, composed of diarylethene, fluorescein and succinimidyl ester units, was developed for the controllable fluorescent labeling of biomolecules based on a small molecule.

The diarylethene derivative 1,2-bis-(5'-dimesitylboryl-2'-methylthieny-3'-yl)-cyclopentene (1) containing dimesitylboryl groups is an interesting photochromic material. The dimesitylboryl groups can bind to F(-), which tunes the optical and electronic properties of the diarylethene compound. Hence, the diarylethene derivative 1 containing dimesitylboryl groups is sensitive to both light and F(-...

Photochromic molecules are of great interest as light-driven molecular switches in research fields material and life sciences. In particular, fast T-type photochromic with half-life times the thermal back reaction (t1/2) on order milliseconds can change not only their color but also physicochemical properties under photoirradiation. Herein, we report crystals t1/2 composed a diarylbenzene by ut...

In this study, we report on the effects of solvent viscosity and polarity on the photochromic salicylaldehyde azine (SAA) molecule by examining the steady-state and UV-visible absorption results in the time scale from nanoseconds to hours, in solution and in a polymer film. For the neutral structure, the viscosity strongly affects the lifetime of the photochromic (trans-keto) tautomer by suppre...

The structural-functional regulation of enzymes by the administration of an external stimulus such as light could create photo-switches that exhibit unique biotechnological applications. However, molecular recognition of small ligands is a central phenomenon involved in all biological processes. We demonstrate herein that the molecular recognition of a photochromic ligand, dihydroindolizine (DH...

It has been challenging to achieve multi-photochromic systems without affecting the individual photoswitching properties of constituent units. Herein, we present design and synthesis a new family platinum-acetylide dendrimers containing up twenty-one photochromic dithienylethene (DTE) units that exhibit both high efficiency switching properties. Upon irradiation with ultraviolet (UV) visible (v...

The electron density of an alkyne moiety is enhanced by the photochromic ring closure of a diarylethene derivative, which allows the thermal addition reaction with a small π-acceptor, tetracyanoethylene, at room temperature.