Azobenzene (AB) is a diazene derivative where both hydrogens are replaced by phenyl groups. Under irradiation with UV light, it undergoes ultrafast trans→cis isomerization; the inverse cis→trans isomerization can be driven by light or occurs thermally in dark. AB photochromic properties enable its application as a light triggered switch in numerous molecular devices and functional materials [1]. Here we use femtosecond pump-probe and two-dimensional electronic spectroscopy in the UV range (2DUV) with sub-20-fs time resolution, combined with ab initio quantum mechanics simulations, to study the initial dynamics of trans-AB isomerization with unprecedented mechanistic detail.
Borrego-Varillas, R., Nenov, A., Oriana, A., Ganzer, L., Omachi Junko, Conti, I., et al. (2017). Tracking azobenzene photoisomerization with sub-20-fs UV pulses. Optical Society of America, 2017.
Tracking azobenzene photoisomerization with sub-20-fs UV pulses
Nenov, Artur;Conti, Irene;Segarra-Marti, Javier;Garavelli, Marco;
2017
Abstract
Azobenzene (AB) is a diazene derivative where both hydrogens are replaced by phenyl groups. Under irradiation with UV light, it undergoes ultrafast trans→cis isomerization; the inverse cis→trans isomerization can be driven by light or occurs thermally in dark. AB photochromic properties enable its application as a light triggered switch in numerous molecular devices and functional materials [1]. Here we use femtosecond pump-probe and two-dimensional electronic spectroscopy in the UV range (2DUV) with sub-20-fs time resolution, combined with ab initio quantum mechanics simulations, to study the initial dynamics of trans-AB isomerization with unprecedented mechanistic detail.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
