Influence of anthracene doping on the order-disorder phase transition in phenanthrene
- Conference date: 3–7 December 2012
- Location: Indian Institute of Technology, Bombay, Mumbai, India
A comparison between Anthracene and Phenanthrene structures demonstrates how molecular shape and molecular packing in the crystal could lead to the presence or absence of large amplitude molecular movement within the crystals. Anthracene doping in Phenanthrene crystals results in an expansion of the unit cell, hence the steric constrain on molecular rotation is eased out with the increase in the dopent concentration. As a result Phenanthrene molecules in doped crystallites can reorient more freely at room temperature, hence the disordered phase of Phenanthrene crystal is stabilized at room temperature it self.
- Polycyclic aromatic hydrocarbons
- Crystal structure
- Molecular structure
- Order disorder phase transitions
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