PTCDA tetracarboxylic dianhydride

NTCDA naphthalene tetracarboxylic dianhydride PTCDA perylene tetracarboxylic dianhydride... 

Figure 14-20. Molecular structure of naphthalene tetracarboxylic dianhydride (NTCDA) and perylene tetracarboxylic dianhydride (PTCDA).

Another interesting feature in the data given in Table 14-3 is the different mobility reported for NTCDA (naphthalene tetracarboxylic dianhydride) and PTCDA (perylene tetracarboxylic dianhydride). These two compounds present very similar molecular formulae (Fig. 14-20), but differ by their crystal packing... 

Figure 12.2 Semiconductor molecules discussed in this paper. 1 perylene-3,4,9,10-tetracarboxylic-dianhydride (PTCDA), 2 perylene, 3 pentacene, 4 tetracene,...

Recently, perylene-3,4,9,10-tetracarboxyl dianhydride (PTCDA) has been reported to be incorporated into an SWNT. The filled nanotube could then be converted into a DWNT by heating to about 1000°C. PTCDA is known to form graphene layers upon heating to 2800 °C. Now given the spatial confinement inside the tube, it is forced to adopt a tubular geometry. 

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