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Homogenous Fluorescent Solution

  1. Jan 19, 2013 #1
    Heyo.
    I'm looking for a white fluorescing dye in the 380-400nm excitation range. It needs to be combined with heavy mineral-oil such that the resulting solution is tenaciously homogenous and will not separate out when centrifuged.
    Many thanks,
    -CC
     
  2. jcsd
  3. Jan 20, 2013 #2

    chemisttree

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    Define "white" and "tenaciously homogenous". If you mean white as perceived by the human eye, it seems to me that a mix of red, green and blue fluorescing dyes would work. Soluble dyes won't settle but how stable these are over time is questionable.
     
  4. Jan 20, 2013 #3
    Yeah, fair enough:
    So as far as the fluorescing color goes, I would be looking for white as perceived by an observer.
    When I say tenaciously-homogenous, what I mean is that the solution could have a tendency towards homogenous distribution of its constituents when left alone. The particles would always tend to have random distribution throughout the volume of the mineral-oil.

    -CC
     
  5. Jan 20, 2013 #4

    chemisttree

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    So a mixture of three different colors would work as well.

    You are saying that soluble fluorescent dyes would work for you. You don't need particles at all.
     
  6. Jan 27, 2013 #5
    Most washing powders contain such a mixture of fluorescent dyes giving the impression of white light.
     
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