121st General Meeting of the KCS

Type Poster Presentation
Area Physical Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code PHYS.P-165
Subject Vibrational circular dichroism (VCD) of limonene cation investigated by circular polarized VUV-MATI spectroscopy
Authors Yu Ran Lee, Soo Rin Lee, Hong Lae Kim, Chan Ho Kwon*
Department of Chemistry, Kangwon National University, Korea
Abstract Vibrational circular dichroism (VCD) as the vibrational analogue of the electronic CD extensively used in chiral selectivity, is rather advantageous for distinguishing the structural conformations of biomolecules and determining absolute configurations of chiral molecules in drugs. Firstly, we generated the circular polarized vacuum ultraviolet (VUV) radiation by four-wave frequency mixing of the linear polarized 216.667 nm light and the circular polarized visible light in Kr. Hence, we invented the circular polarized VUV mass-analyzed threshold ionization spectroscopy to determine the accurate ionization energy and conformational structure of chiral monoterpene molecule which plays an important role in biological systems and conformational dynamics. We investigated the limonene which is one of the most common cyclic monoterpenes and an abundant component of essential oils extracted from lemon and orange rinds in R-(+) form, using our invented technique. Notably, accurate ionization energy of a limonene conformer was determined to be 68,500 ± 3 cm-1
E-mail tyorange@hanmail.net