Studying Microstructure in Molecular Crystals With Nanoindentation: Intergrowth Polymorphism in Felodipine

Manish Kumar Mishra, Gautam R Desiraju, Upadrasta Ramamurty, Andrew D Bond

Research output: Contribution to journalJournal articleResearchpeer-review

80 Citations (Scopus)

Abstract

Intergrowth polymorphism refers to the existence of distinct structural domains within a single crystal of a compound. The phenomenon is exhibited by form II of the active pharmaceutical ingredient felodipine, and the associated microstructure is a significant feature of the compound's structural identity. Employing the technique of nanoindentation on form II reveals a bimodal mechanical response on specific single-crystal faces, demonstrating distinct properties for two polymorphic forms within the same crystal.

Original languageEnglish
JournalAngewandte Chemie (International ed. in English)
Volume53
Issue number48
Pages (from-to)13102-13105
Number of pages4
ISSN1433-7851
DOIs
Publication statusPublished - 26 Sept 2014

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