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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Optimization of high-pressure experiments for measurement of optical activity
 Plamitzer, Luboš ; Valenta, Jan (advisor) ; Baumruk, Vladimír (referee)
The presented bachelor thesis focuses on the effects of high hydrostatic pressure on Raman spectra of selected monoterpenes: (−)-fenchone, (−)-carvone, (−)-limonene and (−)-α-pinene. The spectra under pressures up to 13 GPa were obtained using a diamond anvil cell. All compounds show a significant shift of vibration peak maxima and a change of their intensity. In the case of (−)-fenchone and (−)-α-pinene an "anomalous" decrease of vibrational frequency with increasing pressure was observed, which for (−)-fenchone corresponds to available results of high pressure experiments on structurally similar cam- phor. Pressure-induced spectral and structural changes were also modelled using both classical and quantum-mechanical simulation methods. 1
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