4.7 Article

Electrochemically controlled cocrystallisation of caffeine:1-hydroxy-2-naphthoic acid

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CRYSTENGCOMM
卷 24, 期 1, 页码 48-51

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ce01281a

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  1. French PIA project Lorraine Universite d'excellence [ANR-IDEX04-LUE]
  2. CNRS International Emerging Actions (IEA) program
  3. Universite de Lorraine

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Controlled formation of cocrystals of caffeine and 1-hydroxy-2-naphthoic acid was achieved at the interface between two immiscible electrolyte solutions under chemical polarisation, leading to the selective cocrystallisation as confirmed by X-ray diffraction and Raman spectroscopy. Positive interfacial potentials favored the formation of a specific polymorphic form of caffeine:1-hydroxy-2-naphthoic acid cocrystal. This electrochemically controlled cocrystallisation approach opens up new possibilities for drug development.
Controlled formation of cocrystals is an important objective in drug development. Here, cocrystallisation of caffeine and 1-hydroxy-2-naphthoic acid was investigated at the interface between two immiscible electrolyte solutions under chemical polarisation. In this way, selective cocrystallisation was achieved, as verified by X-ray diffraction and Raman spectroscopy. Positive interfacial potentials favoured the formation of one polymorphic form of caffeine:1-hydroxy-2-naphthoic acid cocrystal. This approach to electrochemically controlled cocrystallisation opens up new possibilities for drug development.

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