The morphology transition between two pyrophosphate-functionalized uranyl peroxide nanocages Li/Na {U24Pp12} and Na/K {U24Pp12} in aqueous solution is reported. These two nanocages have almost identical anion clusters [(UO2)24(O2)24(P2O7)12] 48-, which are balanced by different counterions. The Li/Na U24Pp12 has a “convex” cap while Na/K U24Pp12 has a “concave” cap. This transition is not reversible and can only react from Li/Na {U24Pp12} to Na/K U24Pp12. The transition process is detected by the isothermal titration calorimetry and confirmed by infrared spectroscopy.

Exploring the morphology transition from Li/Na {U24Pp12} to Na/K {U24Pp12} uranyl peroxide nanocluster

253rd National Meeting (2017)

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