Salt-acid-surfactant lyotropic liquid crystalline mesophases: synthesis of highly transparent mesoporous calcium hydroxyapatite thin films

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dc.citation.epage2121en_US
dc.citation.issueNumber13-14en_US
dc.citation.spage2114en_US
dc.citation.volumeNumber2016en_US
dc.contributor.authorTunkara, E.en_US
dc.contributor.authorDag, Ö.en_US
dc.date.accessioned2018-04-12T10:58:28Z
dc.date.available2018-04-12T10:58:28Z
dc.date.issued2016en_US
dc.departmentDepartment of Chemistryen_US
dc.description.abstractEven though calcium hydroxyapatite [Ca10(PO4)6(OH)2, HAp] is one of the most investigated materials in the literature, the synthesis of mesoporous transparent thin film of HAp has not yet been reported. We show herein that mixtures of phosphoric acid (H3PO4·H2O, PA), calcium nitrate tetrahydrate [Ca(NO3)2·4H2O, CaN] and non‐ionic surfactant [C12H25(OCH2CH2)10OH, C12E10] can self‐assemble into stable lyotropic liquid crystalline (LLC) mesophases. The clear aqueous solutions of the mixtures can be spin‐coated over any substrate and then calcined to form highly transparent mesoporous HAp (mHAp) thin films. From among the compositions studied, three molar ratios of CaN/PA/C12E10 [3.3:2:1 (low), 5.8:3.5:1 (intermediate) and 8.4:5:1 (high)] were chosen for large‐scale preparation to investigate their structural and thermal properties. The mHAp films form at around 300 °C and fully crystalize at 500 °C, retaining their transparency, uniformity and porosity in all compositions with few differences. The surface area and pore volume decrease, and the pore size and pore size distribution increase with increasing annealing temperature for all compositions.en_US
dc.identifier.doi10.1002/ejic.201501116en_US
dc.identifier.eissn1099-0682
dc.identifier.issn1434-1948
dc.identifier.urihttp://hdl.handle.net/11693/36960
dc.language.isoEnglishen_US
dc.publisherWiley-VCH Verlagen_US
dc.relation.isversionofhttp://dx.doi.org/10.1002/ejic.201501116en_US
dc.source.titleEuropean Journal of Inorganic Chemistryen_US
dc.subjectCalciumen_US
dc.subjectLiquid crystalsen_US
dc.subjectMesoporous materialsen_US
dc.subjectSurfactantsen_US
dc.subjectThin filmsen_US
dc.titleSalt-acid-surfactant lyotropic liquid crystalline mesophases: synthesis of highly transparent mesoporous calcium hydroxyapatite thin filmsen_US
dc.typeArticleen_US
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