Advanced Materials · 1998 · 262 citations · 0 references
Natural SciencesChemistryMaterials ScienceCrystal StructureSemiconductor MaterialsSolid-state ChemistryCrystal ChemistryCrystalline MaterialsOrganic Electronic MaterialsOrganic SemiconductorsSemiconductor Crystal GrowthSemiconductor Device MaterialsElectronic Band GapElectronic Band Structure In Reciprocal SpaceElectronic Band TheoryOrganic Thin-film TransistorsSingle-crystal GrowthSingle-crystal SemiconductorsSmall-molecule SemiconductorsThiophene Chemistry
The oligomers of thiophene include some that are highly promising for application in thin film transistor devices. The properties of α-quaterthiophene (α-4T) have been investigated to see if it would also be suitable for such applications. The growth of crystals of α-4T is described and the crystal structure data obtained from single crystals of two polymorphs are presented. The differences and similarities of the structure and electronic band structure of the two polymorphs are pointed out, including the expected enhanced mobility of the high-temperature polymorph.