posted on 2001-11-21, 00:00authored byKazunori Tsubaki, Noriyuki Hayashi, Mohammad Nuruzzaman, Tomokazu Kusumoto, Kaoru Fuji
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 °C and fades with either an increase or decrease in temperature.