ULTRAFAST PHOTOEXCITATION STUDIES OF CONCENTRATED SOLUTIONS OF ALKALI METAL HALIDES

 
 
 
 

ULTRAFAST PHOTOEXCITATION STUDIES OF CONCENTRATED SOLUTIONS OF ALKALI METAL HALIDES

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dc.contributor.advisor Rodgers, Michael A.J. en_US
dc.contributor.author Rodrigo, Udaya Indike en_US
dc.date.accessioned 2008-07-08T18:41:59Z
dc.date.available 2008-07-08T18:41:59Z
dc.date.created 2006 en_US
dc.date.issued 2008-07-08T18:41:59Z
dc.identifier.uri http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1154537086 en_US
dc.identifier.uri http://hdl.handle.net/2374.OX/15798
dc.description The primary photochemical processes that occur via a two photon mechanism in pure water during high intensity excitation with a femtosecond pulse at 267 nm were studied by using a white light continuum as probe pulse. Two photon femtosecond laser studies of the excitation and relaxation of pure water showed that, geminate lifetimes were comparable with reported data but the recorded absorption spectrum was blue shifted. Experiments carried out for highly concentrated lithium compounds with different anion indicated that these compounds produced their maximum transient absorption between the wavelengths of 550nm to 700nm. The time profiles of these compounds fell into two major categories. LiI and LiOH showed different kinetic profiles from the others by the initial presence of a short lived species along with longer decay kinetics, where as LiCl, LiBr and LiClO4 shows typical decay kinetics of long lived species only. The fitted experimental data on single exponential function for absorption kinetics of LiCl showed that the absorption rise time falls into same time regime as reported for the purported three body complex of NaCl. This leads to the thought that LiCl may follow the same mechanism. The concentration dependence study of LiCl showed its absorption maxima were red shifted as the concentration was changed from high to low. The kinetic data revealed that rate of absorption for low concentrated solution of LiCl is higher than that of high concentrated LiCl solution. The comparison of LiCl with KCl and NaCl showed that there is a significant contribution from the cation for higher concentrated solution to alter their kinetic and transient absorption. But in the case of low concentrated solutions that effect is not significant. en_US
dc.format application/pdf en_US
dc.format 54p. en_US
dc.rights unrestricted en_US
dc.rights Copyright and permissions information available at the source archive en_US
dc.title ULTRAFAST PHOTOEXCITATION STUDIES OF CONCENTRATED SOLUTIONS OF ALKALI METAL HALIDES en_US
dc.type Electronic Thesis or Dissertation en_US
dc.degree.name MS en_US
dc.degree.level masters en_US
dc.degree.discipline Chemistry en_US
dc.degree.grantor Bowling Green State University en_US
dc.contributor.publisher Bowling Green State University / OhioLINK en_US

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