Phycocyanobilin (PCB) is a natural blue chromophore found in cyanobacteria. PCB is expected to be applied as food colorants and pharmaceuticals with anti-inflammatory and antioxidant properties. PCB ...

Fluorescent proteins have revolutionised biological imaging by offering genetically encodable markers that emit visible light upon excitation. Central to their function is the chromophore, an ...

Fluorescence usually entails the conversion of light at shorter wavelengths to light at longer wavelengths. Scientists have now discovered a chromophore system that goes the other way around. When ...

The membrane protein bacteriorhodopsin is a proton pump, in which proton transport is initiated by the light-induced isomerization of the chromophore retinal. The molecular quantum states involved in ...