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Filming the Birth of Molecules and Accompanying Solvent Rearrangement

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Title
Filming the Birth of Molecules and Accompanying Solvent Rearrangement
Author(s)
Lee, Jae Hyuk; Wulff, Michael; Bratos, Savo; Petersen, Jakob; Guerin, Laurent; Leicknam, Jean-Claude; Cammarata, Marco; Kong, Qingyu; Kim, Jeongho; Moller, Klaus B.; Hyot Cherl Ihee
Publication Date
2013-02
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.135, no.8, pp.3255 - 3261
Publisher
AMER CHEMICAL SOC
Abstract
Molecules are often born with high energy and large-amplitude vibrations. In solution, a newly formed molecule cools down by transferring energy to the surrounding solvent molecules. The progression of the molecular and solute−solvent cage structure during this fundamental process has been elusive, and spectroscopic data generally do not provide such structural information. Here, we use picosecond X-ray liquidography (solution scattering) to visualize timedependent structural changes associated with the vibrational relaxation of I2 molecules in two different solvents, CCl4 and cyclohexane. The birth and vibrational relaxation of I2 molecules and the associated rearrangement of solvent molecules are mapped out in the form of a temporally varying interatomic distance distribution. The I−I distance increases up to ∼4 Å and returns to the equilibrium distance (2.67 Å) in the ground state, and the first solvation cage expands by ∼1.5 Å along the I−I axis and then shrinks back accompanying the structural change of the I2 molecule.
URI
https://pr.ibs.re.kr/handle/8788114/1389
ISSN
0002-7863
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
17_IBS CA1201-1_JACS_135_01_3255-Filming the Birth of Molecules and Accompanying Solvent Rearrangement.pdfDownload

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