Intra- and Inter-Molecular Charge Transfer Interactions in H-Bonded DTPP Crystals

The spectra of polarized reflectivity and excitation of photoconductivity of β-DTPP crystal have been measured. Highly efficient photoconductivities were observed along the both directions of the stacking of the molecules and the intermolecular H-bond. These excitation spectra are considerably different and depend on the direction of applied electric field. These photoconducting properties are discussed in terms of charge transfer interaction along stacking axis and the electron-proton interactions.