BROWSE

Related Scientist

Researcher

김경환
나노물질 및 화학반응 연구단
more info

Global reaction pathways in the photodissociation of I3- ion in solution at 267 and 400 nm studied by picosecond X-ray liquidography

Cited 4 time in webofscience Cited 0 time in scopus
600 Viewed 27 Downloaded
Title
Global reaction pathways in the photodissociation of I3- ion in solution at 267 and 400 nm studied by picosecond X-ray liquidography
Author(s)
Kyung Hwan Kim; Hosung Ki; Key Young Oang; Shunsuke Nozawa; Tokushi Sato; Joonghan Kim; Tae Kyu Kim; Jeongho Kim; Shin-ichi Adachi; Hyot Cherl Ihee
Publication Date
2013-11
Journal
CHEMPHYSCHEM, v.14, no.16, pp.3687 - 3697
Publisher
WILEY-V C H VERLAG GMBH
Abstract
The mechanism of a photochemical reaction involves the formation and dissociation of various short-lived species on ultrafast timescales and therefore its characterization requires detailed structural information on the transient species. By making use of a structurally sensitive X-ray probe, time-resolved X-ray liquidography (TRXL) can directly elucidate the structures of reacting molecules in the solution phase and thus determine the comprehensive reaction mechanism with high accuracy. In this work, by performing TRXL measurements at two different wavelengths (400 and 267 nm), the reaction mechanism of I3 photolysis, which changes subtly depending on the excitation wavelength, is elucidated. Upon 400 nm photoexcitation, the I3 ion dissociates into I2 and I. By contrast, upon 267 nm photoexcitation, the I3 ion undergoes both twobody dissociation (I2 +I) and three-body dissociation (I+2I) with 7:3 molar ratio. At both excitation wavelengths, all the transient species ultimately disappear in 80 ns by recombining to form the I3 ion nongeminately. In addition to the reaction dynamics of solute species, the results reveal the transient structure of the solute/solvent cage and the changes in solvent density and temperature as a function of time.
URI
https://pr.ibs.re.kr/handle/8788114/1564
ISSN
1439-4235
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
K.H.Kim_H.Ihee_ChemPhysChem_2013_GlobalReactionPathwaysinthePhotodissociation~.pdfDownload

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