Molecular probing of shocked rhodamine 6G in liquid water

Erin J. Nissen, Dana D. Dlott

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

Abstract

We have developed a tabletop apparatus for generating planar shock waves in miniature liquid cuvettes from the impact of a laser driven flyer plate. The liquid is sandwiched between an optical window and a thin aluminum lid, used to prevent evaporation. Photon Doppler velocimetry is performed on both the flyer plate and the lid to confirm a reproducible planar shock. Our current array design has 55 microcuvettes, each holding 125 nL, on a glass substrate, and we often do 100 shots per day. This technique was applied to investigate the photophysics and photochemistry of a dye probe rhodamine 6G in shock compressed water. We developed an advanced spectroscopy system that employs a quasi-continuous laser excitation pulse and a spectrograph with streak camera to measure time-dependent photoemission spectra. The shocked dye shows an immediate loss of emission intensity due to enhanced intersystem crossing followed by a more gradual and long-lasting increase in emission intensity over about 150 ns, likely due to proton transfer from the shocked water to the dye molecules.

Original languageEnglish (US)
Title of host publicationShock Compression of Condensed Matter - 2017
Subtitle of host publicationProceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
EditorsMarcus D. Knudson, Eric N. Brown, Ricky Chau, Timothy C. Germann, J. Matthew D. Lane, Jon H. Eggert
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416932
DOIs
StatePublished - Jul 3 2018
Event20th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2017 - St. Louis, United States
Duration: Jul 9 2017Jul 14 2017

Publication series

NameAIP Conference Proceedings
Volume1979
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other20th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2017
Country/TerritoryUnited States
CitySt. Louis
Period7/9/177/14/17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Molecular probing of shocked rhodamine 6G in liquid water'. Together they form a unique fingerprint.

Cite this