Organic semiconducting devices and applications exhibit high performance largely due to a treatment substrate interacting with an asymmetric linear compound. According to an example, an organic compound arrangement includes a treated substrate and an asymmetric linear compound on the treated substrate. The compound includes an acene and a thiophene unit fused to the acene and exhibits high mobility and, in some applications, a correspondingly high on/off ratio. The compound arrangement is suitable for implementation with a variety of semiconducting applications, such as thin-film applications, solar applications and transistor applications.