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Large pore methylene-bridged periodic mesoporous organosilicas: Synthesis, bifunctionalization and their use as nanotemplates
Zhang, WH; Daly, B; O'Callaghan, J; Zhang, L; Shi, JL; Li, C; Morris, MA; Holmes, JD
Source PublicationCHEMISTRY OF MATERIALS
2005-12-13
DOI10.1021/cm050502h
Volume17Issue:25Pages:6407-6415
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
WOS KeywordINORGANIC NANOCOMPOSITE MATERIALS ; MOLECULAR-SCALE PERIODICITY ; SEMICONDUCTOR NANOWIRES ; MORPHOLOGICAL CONTROL ; NITROGEN ADSORPTION ; GERMANIUM NANOWIRES ; FORMATION MECHANISM ; PLATINUM NANOWIRES ; ORGANIC GROUPS ; WALL STRUCTURE
AbstractLarge pore, methylene-bridged, periodic mesoporous organosilicas (PMO-Me's) have been synthesized using the nonionic surfactant P123 (EO(20)PO(70)EO(20)) as a structure-directing agent under acidic conditions. The morphology of the PMO-Me materials was observed to be strongly dependent on the acidity of the solution used in each preparation. Modification of the PMO-Me surface with 3-mercaptopropyltrimethoxysilane (MPTS), via a supercritical fluid grafting reaction, resulted in the formation of a bifunctionalized organosilica (SH-PMO-Me). These SH-PMO-Me materials, coated with Au clusters, were subsequently utilized as templates for the supercritical fluid deposition of germanium nanocrystals. The highly hydrophobic surfaces of the SH-PMO-Me templates, and the effective penetrating power of the supercritical fluid, resulted in rapid diffusion of the germanium precursor into the mesopores to produce highly crystalline nanoparticles and nanorods. These nanocomposite materials were found to be significantly more crystalline than those formed from functionalized Au-coated mesoporous silica templates (SH-SBA-15), highlighting the benefits of using PMOs as hosts for the encapsulation of semiconductor nanomaterials.
Language英语
WOS IDWOS:000233846100029
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139901
Collection中国科学院大连化学物理研究所
Affiliation1.Univ Coll Cork, Dept Chem, Mat Sect & Supercrit Fluid Ctr, Cork, Ireland
2.Trinity Coll Dublin, CRANN, Dublin, Ireland
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Recommended Citation
GB/T 7714
Zhang, WH,Daly, B,O'Callaghan, J,et al. Large pore methylene-bridged periodic mesoporous organosilicas: Synthesis, bifunctionalization and their use as nanotemplates[J]. CHEMISTRY OF MATERIALS,2005,17(25):6407-6415.
APA Zhang, WH.,Daly, B.,O'Callaghan, J.,Zhang, L.,Shi, JL.,...&Holmes, JD.(2005).Large pore methylene-bridged periodic mesoporous organosilicas: Synthesis, bifunctionalization and their use as nanotemplates.CHEMISTRY OF MATERIALS,17(25),6407-6415.
MLA Zhang, WH,et al."Large pore methylene-bridged periodic mesoporous organosilicas: Synthesis, bifunctionalization and their use as nanotemplates".CHEMISTRY OF MATERIALS 17.25(2005):6407-6415.
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