Fotoisomerización del azobenceno

trans-Azobenzene → cis-Azobenzene

Descripción general

UV light (340 nm) converts the thermodynamically stable trans isomer of azobenzene to the cis form through rotation around the N=N bond. Visible light (450 nm) or thermal relaxation converts it back. The large geometric change (9 Å to 5.5 Å end-to-end distance) makes azobenzene a versatile molecular switch.

Ejemplo cotidiano

Azobenzene-based molecular motors can move objects millions of times their own mass when triggered by light.

Importancia industrial

Aplicado en motores moleculares, actuadores fotosensibles, liberación controlada de fármacos y cristales líquidos fotoactivos.

Preguntas frecuentes

What is the equation for Fotoisomerización del azobenceno?
The balanced equation is: trans-Azobenzene → cis-Azobenzene.
What type of reaction is Fotoisomerización del azobenceno?
Fotoisomerización del azobenceno is a fotoquímica reaction. It is reversible under certain conditions.
Is Fotoisomerización del azobenceno exothermic or endothermic?
Fotoisomerización del azobenceno is endothermic (absorbs energy). The enthalpy change (ΔH) is 50.0 kJ/mol.