A liquid azobenzene derivative as a solvent-free solar thermal fuel

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Abstract

A liquid trans-azobenzene derivative facilely isomerizes to the higher energy cis-isomer, allowing high volumetric density storage of the photon energy.

Abstract

A liquid solar thermal fuel is developed; a low-molecular weight liquid trans-azobenzene derivative shows facile photoisomerization to the higher-energy cis-isomer in neat condition so that a high volumetric energy density is achieved. Shear viscosity measurements for each isomer liquid unveiled transitions from non-Newtonian to Newtonian fluids.

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Azobenzene photoswitches for biomolecules.

Andrew A Beharry, G Andrew Woolley (2011)

The photoisomerization of azobenzene has been known for almost 75 years but only recently has this process been widely applied to biological systems. The central challenge of how to productively couple the isomerization process to a large functional change in a biomolecule has been met in a number of instances and it appears that effective photocontrol of a large variety of biomolecules may be possible. This critical review summarizes key properties of azobenzene that enable its use as a photoswitch in biological systems and describes strategies for using azobenzene photoswitches to drive functional changes in peptides, proteins, nucleic acids, lipids, and carbohydrates (192 references). This journal is © The Royal Society of Chemistry 2011