The role of curvature in silica mesoporous crystals

Handle URI:
http://hdl.handle.net/10754/562092
Title:
The role of curvature in silica mesoporous crystals
Authors:
Miyasaka, Keiichi; Bennett, Alfonso Garcia; Han, Lu; Han, Yu ( 0000-0003-1462-1118 ) ; Xiao, Changhong; Fujita, Nobuhisa; Castle, Toen; Sakamoto, Yasuhiro; Che, Shunai; Terasaki, Osamu
Abstract:
Silica mesoporous crystals (SMCs) offer a unique opportunity to study micellar mesophases. Replication of non-equilibrium mesophases into porous silica structures allows the characterization of surfactant phases under a variety of chemical and physical perturbations, through methods not typically accessible to liquid crystal chemists. A poignant example is the use of electron microscopy and crystallography, as discussed herein, for the purpose of determining the fundamental role of amphiphile curvature, namely mean curvature and Gaussian curvature, which have been extensively studied in various fields such as polymer, liquid crystal, biological membrane, etc. The present work aims to highlight some current studies devoted to the interface curvature on SMCs, in which electron microscopy and electron crystallography (EC) are used to understand the geometry of silica wall surface in bicontinuous and cage-type mesostructures through the investigation of electrostatic potential maps. Additionally, we show that by altering the synthesis conditions during the preparation of SMCs, it is possible to isolate particles during micellar mesophase transformations in the cubic bicontinuous system, allowing us to view and study epitaxial relations under the specific synthesis conditions. By studying the relationship between mesoporous structure, interface curvature and micellar mesophases using electron microscopy and EC, we hope to bring new insights into the formation mechanism of these unique materials but also contribute a new way of understanding periodic liquid crystal systems. © 2012 The Royal Society.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Biological and Environmental Sciences and Engineering (BESE) Division; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Nanostructured Functional Materials (NFM) laboratory
Publisher:
The Royal Society
Journal:
Interface Focus
Issue Date:
8-Feb-2012
DOI:
10.1098/rsfs.2011.0098
PubMed ID:
24098848
PubMed Central ID:
PMC3438573
Type:
Article
ISSN:
20428898
Sponsors:
This work was supported by the Swedish Research Council (VR), EXSELENT programme, Wallenberg Foundation in Sweden and World Class University (WCU) programme (R-31-2008-000-10055-0) in South Korea. S.C. and L.H. are grateful for the support of the National Natural Science Foundation of China (grant no. 20890121) and the 973 project (2009CB930403).
Additional Links:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3438573
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMiyasaka, Keiichien
dc.contributor.authorBennett, Alfonso Garciaen
dc.contributor.authorHan, Luen
dc.contributor.authorHan, Yuen
dc.contributor.authorXiao, Changhongen
dc.contributor.authorFujita, Nobuhisaen
dc.contributor.authorCastle, Toenen
dc.contributor.authorSakamoto, Yasuhiroen
dc.contributor.authorChe, Shunaien
dc.contributor.authorTerasaki, Osamuen
dc.date.accessioned2015-08-03T09:44:36Zen
dc.date.available2015-08-03T09:44:36Zen
dc.date.issued2012-02-08en
dc.identifier.issn20428898en
dc.identifier.pmid24098848en
dc.identifier.doi10.1098/rsfs.2011.0098en
dc.identifier.urihttp://hdl.handle.net/10754/562092en
dc.description.abstractSilica mesoporous crystals (SMCs) offer a unique opportunity to study micellar mesophases. Replication of non-equilibrium mesophases into porous silica structures allows the characterization of surfactant phases under a variety of chemical and physical perturbations, through methods not typically accessible to liquid crystal chemists. A poignant example is the use of electron microscopy and crystallography, as discussed herein, for the purpose of determining the fundamental role of amphiphile curvature, namely mean curvature and Gaussian curvature, which have been extensively studied in various fields such as polymer, liquid crystal, biological membrane, etc. The present work aims to highlight some current studies devoted to the interface curvature on SMCs, in which electron microscopy and electron crystallography (EC) are used to understand the geometry of silica wall surface in bicontinuous and cage-type mesostructures through the investigation of electrostatic potential maps. Additionally, we show that by altering the synthesis conditions during the preparation of SMCs, it is possible to isolate particles during micellar mesophase transformations in the cubic bicontinuous system, allowing us to view and study epitaxial relations under the specific synthesis conditions. By studying the relationship between mesoporous structure, interface curvature and micellar mesophases using electron microscopy and EC, we hope to bring new insights into the formation mechanism of these unique materials but also contribute a new way of understanding periodic liquid crystal systems. © 2012 The Royal Society.en
dc.description.sponsorshipThis work was supported by the Swedish Research Council (VR), EXSELENT programme, Wallenberg Foundation in Sweden and World Class University (WCU) programme (R-31-2008-000-10055-0) in South Korea. S.C. and L.H. are grateful for the support of the National Natural Science Foundation of China (grant no. 20890121) and the 973 project (2009CB930403).en
dc.publisherThe Royal Societyen
dc.relation.urlhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3438573en
dc.subjectElectron crystallographyen
dc.subjectGaussian curvatureen
dc.subjectMean curvatureen
dc.subjectSilica mesoporous crystalsen
dc.subjectSurfactant packing parameteren
dc.titleThe role of curvature in silica mesoporous crystalsen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalInterface Focusen
dc.identifier.pmcidPMC3438573en
dc.contributor.institutionGraduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 305-701, South Koreaen
dc.contributor.institutionDepartment of Engineering Sciences, Nanotechnology and Functional Materials, Ångström Laboratory, Uppsala University, 75121 Uppsala, Swedenen
dc.contributor.institutionSchool of Chemistry and Chemical Technology, State Key Laboratory of Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, Chinaen
dc.contributor.institutionInorganic and Structural Chemistry and EXSELENT, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Swedenen
dc.contributor.institutionInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japanen
dc.contributor.institutionNanoscience and Nanotechnology Research Center, Osaka Prefecture University, Sakai 599-8570, Japanen
kaust.authorHan, Yuen

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