Temperature and pressure dependences of thermal cis-to-trans isomerization of azobenzenes which evidence an inversion mechanism

Photoresponsive Cryptand With an Azopyridine-Bridge

“…[1][2][3] This is the first example of photoresponsive crown ethers as well as others subsequently reported. [4][5][6] We here wish to report a new photoresponsive "cryptand" (2) which has a crown ring bridged with an azopyridine and changes its binding ability toward heavy metal ions in response to photoirradiation.…”

The Effect of Polymer Rigidity on Photoisomerization of 4-Dimethylamino-4′-nitroazobenzene

“…7 x 10-4 s -1 in methylcyclohexane at 230 K. The first-order rate constants for the thermal cis-to-trans isomerization ofDANAB and non-substituted azobenzene in hexane at 293 K were reported to be 2.7xl0-3 s-1 and 2.5x10-6 s-1 , respectively. 18 The final cis-fractions decrease in all polymers with decreasing temperature below 160 K where the cis-to-trans thermal backward reaction is negligible. The decrease is caused by the suppression of local mobilities of the matrix polymers at lower temperatures.…”

Smart Self‐Assemblies Based on a Surfactant‐Encapsulated Photoresponsive Polyoxometalate Complex

“…As is known, cis-Azo can readily return to the more stable trans form in the dark due to thermally induced cis-trans isomerization. [15] Through deposition of the spherical assemblies ( Figure 5 a) in the dark for 20 hours, the spheres were found to be elongated and linked together (Figure 5 b). Willow-leaf-like aggregates were observed after about 48 hours (Figure 5 c).…”