Role of citrate in the formation of enamel-like calcium phosphate oriented nanorod arrays

Francesca Carella; Lorenzo Degli Esposti; Davide Barreca; Gian Andrea Rizzi; Gianmario Martra; Pavlo Ivanchenko; Guillermo Escolano Casado; Jaime Gomez Morales; José Manuel Delgado Lòpez; Anna Tampieri; Michele Iafisco

doi:10.1039/C9CE00508K

Role of citrate in the formation of enamel-like calcium phosphate oriented nanorod arrays†

Francesca Carella,

^a Lorenzo Degli Esposti,^a Davide Barreca,

^b Gian Andrea Rizzi,^c Gianmario Martra,^d Pavlo Ivanchenko,^d Guillermo Escolano Casado,

^d Jaime Gomez Morales,

^e José Manuel Delgado Lòpez,

^f Anna Tampieri^a and Michele Iafisco

*^a

Author affiliations

* Corresponding authors

^a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Faenza, Italy
E-mail: michele.iafisco@istec.cnr.it

^b CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, Padova, Italy

^c Department of Chemical Sciences and INSTM, Padova University, Padova, Italy

^d Department of Chemistry and Interdepartmental Centre “Nanostructured Interfaces and Surfaces – NIS” of the University of Torino, Torino, Italy

^e Laboratorio de Estudios Cristalográficos. IACT, CSIC-UGR, Armilla, Spain

^f Department of Inorganic Chemistry, University of Granada, Granada, Spain

Abstract

The formation of oriented enamel-like fluoride doped hydroxyapatite (HA) nanorods on amorphous calcium phosphate (ACP) substrates in their bare form and containing citrate is compared. It is found that the presence of citrate delays the conversion into un-oriented HA that in turn affects the overgrowth of nanorods as well as their shape and surface features. With citrate being an important component of bones and teeth, this study is highly relevant to attain new insights into the biomineralization processes and to widen the range of strategies for the design of advanced biomaterials.

CrystEngComm

Role of citrate in the formation of enamel-like calcium phosphate oriented nanorod arrays†

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Role of citrate in the formation of enamel-like calcium phosphate oriented nanorod arrays

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