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Visual recognition of triamines by phenolphthalein derivatives: consideration of the structure of the colored complex
K Tsubaki1, N Hayashi, M Nuruzzaman
1Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
Organic Letters
|December 12, 2001
Abstract:
[structure: see text] A hybrid molecule 1 consisting of phenolphthalein and two crown ether moieties can be used to discriminate the length of linear triamines strictly by color development. The purple color is developed most deeply at -10 degrees C and fades with either an increase or decrease in temperature.