Single crystals and thin films of the p-type organic semiconductor alpha,omega-dihexylquaterthiophene have been studied using X-ray diffraction and TEM, respectively. The single crystal analysis reveals the presence of monomolecular layers of quaterthiophene cores with terminally bound hexyl chains. A herringbone molecular packing akin to that exhibited by the parent quaterthiophene molecule is observed. Electron diffraction of thin films on silica clearly shows the crystalline polymorph of the solution-grown crystals and the crystallites deposited by organic molecular beam deposition are identical. However, thin film crystallites are severely affected by multiple twinning.
Moret, M., Campione, M., Borghesi, A., Miozzo, L., Sassella, A., Trabattoni, S., et al. (2005). Structural characterisation of single crystals and thin films of alpha,omega-dihexylquaterthiophene. JOURNAL OF MATERIALS CHEMISTRY, 15(25), 2444-2449 [10.1039/b504233j].
Structural characterisation of single crystals and thin films of alpha,omega-dihexylquaterthiophene
MORET, MASSIMO;CAMPIONE, MARCELLO;BORGHESI, ALESSANDRO;SASSELLA, ADELE;TRABATTONI, SILVIA;
2005
Abstract
Single crystals and thin films of the p-type organic semiconductor alpha,omega-dihexylquaterthiophene have been studied using X-ray diffraction and TEM, respectively. The single crystal analysis reveals the presence of monomolecular layers of quaterthiophene cores with terminally bound hexyl chains. A herringbone molecular packing akin to that exhibited by the parent quaterthiophene molecule is observed. Electron diffraction of thin films on silica clearly shows the crystalline polymorph of the solution-grown crystals and the crystallites deposited by organic molecular beam deposition are identical. However, thin film crystallites are severely affected by multiple twinning.
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