Conjugated polymers are remarkable materials that combine the electrical and optical properties of semiconductors with the mechanical properties of plastics. Moreover, the optical properties of these 1D organic semiconductors are not isotropic but are highly polarized along the axis of the polymer chain. Now, Benjamin Schwartz and Sarah Tolbert of the University of California at Los Angeles and colleagues have exploited this property to align the polymer chains in one direction so that the chains absorb and emit polarized light.