Ultrafast X-ray diffraction of photodissociation of iodoform in solution

Jae Hyuk Lee, Tae Kyu Kim, Joonghan Kim, MacIej Lorenc, Qingyu Kong, Michael Wulff, Hyotcherl Ihee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We studied structural dynamics in the photodissociation of iodoform (CHI3) dissolved in methanol by time-resolved x-ray diffraction. A femtosecond laser pulse induces the bond-breaking of an iodine atom from iodoform and an x-ray pulse generated from a synchrotron gives time-dependent diffraction signal which contains the structural information of photoproducts with 100 ps time-resolution and 0.001 Å spatial resolution. CHI 2 radical and I atom are formed by the results of the ultrafast photodissociation of iodoform and these intermediates recombine to form iodoform again via geminate recombination. The iodine atoms which escape from the cages nongeminately recombine to form I2. Solvent dynamics, heating and solvent expansion, caused by photodissociation, are also explained from time-resolved x-ray diffraction data.

Original languageEnglish
Title of host publicationSYNCHROTRON RADIATION INSTRUMENTATION
Subtitle of host publicationNinth International Conference on Synchrotron Radiation Instrumentation
Pages1262-1268
Number of pages7
DOIs
Publication statusPublished - 2007
EventSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation - Daegu, Korea, Republic of
Duration: 2006 May 282006 Jun 28

Publication series

NameAIP Conference Proceedings
Volume879
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation
CountryKorea, Republic of
CityDaegu
Period06/5/2806/6/28

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Lee, J. H., Kim, T. K., Kim, J., Lorenc, M., Kong, Q., Wulff, M., & Ihee, H. (2007). Ultrafast X-ray diffraction of photodissociation of iodoform in solution. In SYNCHROTRON RADIATION INSTRUMENTATION: Ninth International Conference on Synchrotron Radiation Instrumentation (pp. 1262-1268). (AIP Conference Proceedings; Vol. 879). https://doi.org/10.1063/1.2436294