title: [Study on intermolecular interaction between 4-aminopyridine and methacrylic acid using two dimensional FTIR spectroscopy].
abstract: A two-dimensional infrared (2D IR) correlation spectroscopy technique has been introduced to study the intermolecular interaction between 4-aminopyridine and methacrylic acid. The type and relationship of the bond between 4-aminopyridine and methacrylic acid molecule could not be characterized directly using the one-dimensional FTIR spectroscopy. On the contrary, the interactions between 4-aminopyridine and methacrylic acid molecule were determined using 2D IR correlation spectroscopy. The synchronous cross peaks exist between stretching vibrations of hydroxyl group of methacrylic acid at 1298 and 1202 cm(-1) and C=N group of 4-aminopyridine at 1531 cm(-1), and between carbonyl group of methacrylic acid at 1705 cm(-1) and N-H group of 4-aminopyridine at 3382 and 3212 cm(-1), respectively. According to the two-dimensional correlation rules, the interactions of static electricity and hydrogen bonding exist between 4-aminopyridine and methacrylic acid molecule. Such successful applications demonstrate that two-dimensional infrared correlation spectroscopy may be a convenient and effective means in the study of the intermolecular and intramolecular interaction.
authors.affiliation: Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China. xyliu73@hotmail.com
authors.forename: Xue-yong
authors.initials: XY
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Zhou
authors.forename: Kun
authors.initials: K
authors.lastname: Chang
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Min-xia
authors.initials: MX
authors.lastname: Zheng
authors.forename: Yi-wei
authors.initials: YW
authors.lastname: Luo