Dyed Phosphorescence: Pyranine on Sugar - WL

FOV:2" wide.

 

Following recent experiments with candy I wondered if a fluorescent dye could change the phosphorescent color of sugar. On the left a hard candy was painted with a yellow Hi-Liter Marker containing the fluorescent dye, pyranine. On the right is a piece of cardboard also painted with the marker.

 

The pyranine on the cardboard showed no phosphorescence whereas the pyranine that had been painted on the sugar produced a yellow after-glow.

 

Contains:

Sugar (FL+PHOS Bluish white >UVabc)

Pyranine (FL Yellow green! >UVabc)

 

Shown under white light.

 

Key:

WL = White light (LED)

FL = Fluoresces

PHOS = Phosphorescent

Blue = 450nm,

UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)

'>' = "stimulated by:", '!' = "bright", '~' = "dim"

 

Initially inspired by an experiment by Flickr's Hrumkorf: www.flickr.com/photos/hrumkorf/10423169673/

 

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Photostream best viewed in Lightbox mode (in the dark).

 

18 Watt Triple Output UV lamp from Polman Minerals - Way Too Cool UV lamps

Done