An artificial mimic of a key light-sensitive molecule has been made by scientists at the University of Bristol.  The work, published in Science, could lead to new ways of building light-sensitive artificial cells.
Professor Jonathan Clayden and colleagues in Bristol's School of Chemistry, along with collaborators at the Universities of Manchester and Hull, created an artificial mimic of rhodopsin, a protein that resides in cell membranes in the retina.  The absorption of light by rhodopsin is the first step in the biochemistry of vision.