BROWSE

Related Scientist

Ki, Ho Sung's photo.

Ki, Ho Sung
나노물질 및 화학반응 연구단
more info

ITEM VIEW & DOWNLOAD

Optical Kerr Effect of Liquid Acetonitrile Probed by Femtosecond Time-Resolved X-ray Liquidography

Cited 0 time in webofscience Cited 0 time in scopus
23 Viewed 0 Downloaded
Title
Optical Kerr Effect of Liquid Acetonitrile Probed by Femtosecond Time-Resolved X-ray Liquidography
Author(s)
Hosung Ki; Choi, Seungjoo; Jungmin Kim; Eun Hyuk Choi; Seonggon Lee; Yunbeom Lee; Yoon, Kihwan; Chi Woo Ahn; Doo-Sik Ahn; Lee, Jae Hyuk; Park, Jaeku; Eom, Intae; Kim, Minseok; Chun, Sae Hwan; Kim, Joonghan; Hyotcherl Ihee; Kim, Jeongho
Publication Date
2021-09-08
Journal
Journal of the American Chemical Society, v.143, no.35, pp.14261 - 14273
Publisher
American Chemical Society
Abstract
© Optical Kerr effect (OKE) spectroscopy is a method that measures the time-dependent change of the birefringence induced by an optical laser pulse using another optical laser pulse and has been used often to study the ultrafast dynamics of molecular liquids. Here we demonstrate an alternative method, femtosecond time-resolved X-ray liquidography (fs-TRXL), where the microscopic structural motions related to the OKE response can be monitored using a different type of probe, i.e., X-ray solution scattering. By applying fs-TRXL to acetonitrile and a dye solution in acetonitrile, we demonstrate that different types of molecular motions around photoaligned molecules can be resolved selectively, even without any theoretical modeling, based on the anisotropy of two-dimensional scattering patterns and extra structural information contained in the q-space scattering data. Specifically, the dynamics of reorientational (libration and orientational diffusion) and translational (interaction-induced motion) motions are captured separately by anisotropic and isotropic scattering signals, respectively. Furthermore, the two different types of reorientational motions are distinguished from each other by their own characteristic scattering patterns and time scales. The measured time-resolved scattering signals are in excellent agreement with the simulated scattering signals based on a molecular dynamics simulation for plausible molecular configurations, providing the detailed structural description of the OKE response in liquid acetonitrile.
URI
https://pr.ibs.re.kr/handle/8788114/10341
DOI
10.1021/jacs.1c06088
ISSN
0002-7863
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse