Photo Reactive Dye: Irreversible Change in Presence of Light

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Discussion Overview

The discussion revolves around identifying photo reactive dyes or compounds that undergo an irreversible color change when exposed to light. Participants explore the distinction between photochromic dyes, which are reversible, and seek alternatives that exhibit irreversible changes.

Discussion Character

  • Homework-related
  • Exploratory

Main Points Raised

  • Some participants inquire about compounds that change color irreversibly under light exposure, noting the limitations of photochromic dyes.
  • One participant mentions researching irreversible photochemical reactions and shares a link to search results for further exploration.
  • Another participant suggests looking up caged dyes or photoactivable dyes as potential candidates for irreversible changes.
  • A later reply expresses gratitude for the suggestions and acknowledges the helpfulness of the names provided.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on a specific compound but share suggestions and resources, indicating an ongoing exploration of the topic.

Mechdude
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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

.
 
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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