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@ARTICLE{Valero:889024,
      author       = {Valero, Margarita and Levin, Peter P. and Sultimova,
                      Natalya B. and Houston, Judith},
      title        = {{P}hotochemistry of nabumetone in aqueous solution of
                      sodium dodecyl sulfate ({SDS}) micelles},
      journal      = {Journal of molecular liquids},
      volume       = {319},
      issn         = {0167-7322},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2020-05397},
      pages        = {114093 -},
      year         = {2020},
      abstract     = {The photochemistry, solubility and distribution between two
                      phases of nabumetone (NB) in aqueous solution of sodium
                      dodecyl sulfate (SDS) micelles were studied. The solubility
                      (SNB) of NB was monitored using steady-state UV–Vis
                      absorption spectroscopy. The linear relationship of SNB to
                      SDS concentration ([SDS]) gave the large value of partition
                      coefficient, P (logP = 3.5), for NB distribution between the
                      aggregate and the water phase showing the localization of NB
                      in the micellar phase. NB fluorescence (FL) quantum yield
                      increases with [SDS] from 0.03 in water to 0.056 at 0.2 M
                      [SDS]. The dependence of FL intensity at 355 nm (F335) on
                      [SDS] is bell-shaped. The plot of initial F335 increase with
                      [SDS] in the range 0–0.05 M gave the expected value of the
                      critical micelle concentration (cmc = 7.9 mM). Further
                      increase of [SDS] resulted in $10\%$ decrease of F335
                      demonstrating the variation of the micellar structure.
                      Small-Angle Neutron Scattering (SANS) and refractometry
                      confirmed this variation. The NB in SDS was protected
                      against photodegradation. High Performance Liquid
                      Chromatography/Mass Spectrometry (HPLC/MS) detected
                      2-(but-2-en-1-yl)-6-methoxynaphthalene as NB final
                      photoproducts in SDS solution which was not found in
                      homogeneous media. The hydrated electron localized in water
                      phase, NB radical cation and NB triplet excited state both
                      localized in the micellar phase were observed by laser flash
                      photolysis of NB in micellar solution. The decay kinetics of
                      these intermediates was different with respect to that in
                      the homogeneous media. The reactivity of NB in SDS micellar
                      environment compared to the homogeneous media is under the
                      discussion.},
      cin          = {JCNS-FRM-II / JCNS-1 / MLZ},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000583948500080},
      doi          = {10.1016/j.molliq.2020.114093},
      url          = {https://juser.fz-juelich.de/record/889024},
}