A Cu2+ sensor based on click chemistry and azide- and alkyne-functionalized polydiacetylene vesicles has been developed by South Korean scientists. In the presence of ascorbic acid, Cu2+ is reduced to Cu+ and catalyzes a click reaction between the two functional groups. The sensor changes colour from blue to red due to a conformational transition in the conjugated backbone. Interested to know more? Read the full article for free until 8th September.
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