A Note on Some Old and Some Possible New Redox Indicators

  • Robert Hill


Starting with the frequently used dye 2,6-dichloroindophenol some of the chemical properties of the quinonimide class of dyes are described. Consideration of the effects of completing a hetero-sixmembered ring, as in the azine, thiazine and oxazine classes, on the properties of the compounds is suggested as a lead towards the development of some redox indicators perhaps more desirable than the indophenols. This approach developed from a study of the Liebermann nitroso-reaction for phenols. Some properties of the redox indicators which resulted from that work are described in relation to energy transduction in the chloroplast.


Methylene Blue Redox Indicator Paraphenylene Diamine Chloroplast Preparation Weak Alkali 
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Copyright information

© Plenum Publishing Company Limited 1972

Authors and Affiliations

  • Robert Hill
    • 1
  1. 1.Department of BiochemistryUniversity of CambridgeUK

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