Journal
CHEMICAL PHYSICS LETTERS
Volume 533, Issue -, Pages 30-34Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2012.03.001
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Funding
- Eberly Science Foundation
- ACS [37400-AC5]
- National Science Foundation [CHE-0612957]
- AFOSR [F496209810475]
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This study examines the effect of pressure-induced conformation changes on low-temperature vibrational dynamics in crystalline para-terphenyl (pTP). The temperature dependence of homogeneously broadened infrared bands under simultaneous high-pressure and low-temperature conditions is reported. High-pressure induces a conformation change in pTP from a twisted structure at ambient pressure to a planar structure at high pressure (1.35 GPa). The characteristic temperature dependent vibrational dynamics for in-plane versus out-of-plane hydrogen bending modes are correlated with the planarization of the pTP molecule at high-pressure. (C) 2012 Elsevier B. V. All rights reserved.
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