Photo Reactive Dye: Irreversible Change in Presence of Light

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The discussion centers on the search for photo reactive dyes that undergo irreversible color changes when exposed to light, distinguishing them from reversible photochromic dyes. Participants suggest exploring caged dyes or photoactivable dyes as potential candidates for irreversible reactions. The initial inquiry highlights the challenge of finding suitable compounds that meet these criteria. Resources and search results related to irreversible photochemical reactions are shared for further investigation. The conversation emphasizes the need for specific compounds that exhibit permanent changes in response to light exposure.
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Homework Statement



im trying to identify photo reactive dye/ compound that changes color when exposed to light, i know of photochromic dyes, unfortunately photochromic dyes undergo a reversible change in appearance. is there a compound that changes in the presenc eof light irreversibly?

Homework Equations





The Attempt at a Solution

 
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Mechdude said:

Homework Statement



im trying to identify photo reactive dye/ compound that changes color when exposed to light, i know of photochromic dyes, unfortunately photochromic dyes undergo a reversible change in appearance. is there a compound that changes in the presenc eof light irreversibly?

Homework Equations





The Attempt at a Solution


I Googled irreversible photochemical reactions, and got some good hits. Do any of these help?

http://www.google.com/search?source...1US302&q=irreversible+photochemical+reactions

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Look up caged dyes or photoactivable dyes.
 
thanks berkeman, & Ygggdrasil nice name though i can't pronounce it, that's what i was looking for.
regards.
 
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