Quasi one-dimensional materials
	Perylene derivatives, such as MePTCDI and PTCDA , and metal-phthalocyanines, e.g. MgPc , are very promising candidates for the application in optoelectronic devices. Besides their semiconductivity they show a quasi-one-dimensional crystal structure (see Table 1), so all electronic properties are expected to be very anisotropic.
	Molecules MePTCDI PTCDA MgPc Crystal Structure Table 1: Representive organic materials which form quasi one-dimensional molecular crystals. Along one direction, the molecules are tightly packed (last row).
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