Electrical Switching of 1,2‐Bis(2‐methyl‐5‐phenyl‐3‐thienyl) perfluorocyclopentene in the Solid State

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

“…Thin layer films of neat diarylethenes were also used to control electrical current. − The electrical conductivity is dependent on both the ionization potential barrier for carrier injection and the mobility of carriers. The ionization potential of the closed-ring isomer is smaller than that of the open-ring isomer.…”

Optically switchable transistors comprising a hybrid photochromic molecule/n-type organic active layer

“…Photomodulation of current has been achieved by using neat photochromic molecules, 11 synthesizing hybrid molecules consisting of a photochromic system covalently or supramolecularly attached to an organic (semi)conductor, [12][13][14][15][16][17][18][19] or by combination of photochromic systems and organic semiconductors in blends or layered devices. [20][21][22][23][24] The latter approaches offer the advantage of high switching ratios while maintaining high charge carrier mobilities.…”

Mechanism and Fluorescence Application of Electrochromism in Photochromic Dithienylcyclopentene

“…Dithienylcyclopentene (DTE) undergoes reversible interconversion under photoirradiation between open and closed form isomers with distinct optical changes. The photochromic DTE derivatives gather enormous research interests because they exhibit ideal properties for molecular switches, such as bistability, thermal irreversibility, and ultrafast conversion. − Recently, it has been found that some of DTE molecules feature similar conversion in their oxidized or reduced states. − Such electrochromism of photochromic DTEs is valuable, offering an additional means to address switching states (i.e., open and closed states). − In fact, the unique dual chromism has been exploited to control memory functions − and photopolymerization …”