1,720,985 research outputs found
Intramolecular and Low-Frequency Intermolecular Vibrations of Pentacene Polymorphs as a Function of Temperature
No full textSingle crystals of pentacene with different morphologies (polymorphs C and H) have been studied by Raman
spectroscopy as a function of temperature from 79 to 300 K. All Raman active lattice modes and a range of
low-frequency intramolecular modes have been identified and assigned. The experiments are compared with
quasi harmonic lattice dynamics (QHLD) calculations of the crystallographic structures and vibrational
frequencies as a function of temperature. Experiments and calculations both indicate that the two polymorphs
are stable over a wide temperature range
Lattice dynamics and electron-phonon coupling in beta-(BEDT-TTF)<SUB>2</SUB>I<SUB>3</SUB>
No full text
- …
