A conjugated polymer which is preparable from a solution-processible precursor polymer and which exhibits in optical absorption spectroscopy its greatest amplitude of absorption at the photon energy equal to that of the (0,0) electronic transition across the semiconductor energy-gap in comparison to that at the energies of any of the vibronic side-bands of the (0,0) electronic transition. A conjugated poly(arylenevinylene) polymer is also provided, such as poly(p-phenylenevinylene). The conjugated polymer may be used in a variety of applications where an improved electronic structure is useful, such as in electroluminescent devices.
