Its oddly colored light is probably the glow of organic molecules. The Red Rectangle is thus a historic entity whose unique shape and singular glow opened doors to previously unknown phenomena.

can separate other organic molecules by size and shape. A molecular organic cage is shown to separate a common aromatic feedstock (mesitylene) from its structural isomer (4-ethyltoluene ...

Rather than liquid metal, it is a hydrogel, a mesh of organic molecules with many small empty spaces ... The ability to form a gel into a desired shape further expands the possibilities. For example, ...