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[摘要]：Anyone for a pi-type sandwich? A luminescent indicator was developed based on the potassium-binding-induced conformational change of a macrocyclic terbium complex. The indicator adopts a random coil conformation in the absence of K+. In the presence of K+, it forms a pi-type sandwich complex with the arene, resulting in an effective energy transfer and strong luminescence (see figure). |
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