Structural solution of mesocaged material AMS-8

被引：72

作者：

Garcia-Bennett, AE ^{[1
]}

Miyasaka, K

Terasaki, O

Che, SN

机构：

[1] Univ Stockholm, Arrhenius Lab, S-10691 Stockholm, Sweden

[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Dept Chem, Shanghai 200240, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 19期

关键词：

D O I：

10.1021/cm049398e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel mesoporous material prepared using the recently reported co-assembly of anionic surfactants with organosilane groups has been studied in depth using high-resolution transmission electron microscopy (HRTEM) and electron crystallography. A three-dimensional (3D) structural solution of AMS-8 was obtained by Fourier analysis of HRTEM images, revealing a complex cubic mesocaged solid (space group Fd (3) over barm) composed of bimodal cages 3D-connected by cage windows. HRTEM images also indicate the presence of structural defects associated with the cubic close packing of spheres, while analysis by nitrogen adsorption-desorption isotherms reveals that accessibility to smaller cages may be restricted in this material. The opened and closed models of this structure derived from a combination of electron crystallography and nitrogen adsorption data are discussed with respect to the arrangement of cages and cage connectivities. Considerations of the nature of the micellar system playing part in this novel templating mechanism are discussed.

引用

页码：3597 / 3605

页数：9

共 34 条

[1] A record nine different phases (four cubic, two hexagonal, and one lamellar lyotropic liquid crystalline and two micellar solutions) in a ternary isothermal system of an amphiphilic block copolymer and selective solvents (water and oil) [J].

Alexandridis, P ;

Olsson, U ;

Lindman, B .

LANGMUIR, 1998, 14 (10) :2627-2638

[2]

ANDERSON M, 1992, CHEM COMMUN, V218, P61

[3] Synthesis of a stable hexagonally packed mesoporous niobium oxide molecular sieve through a novel ligand-assisted templating mechanism [J].

Antonelli, DM ;

Ying, JY .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1996, 35 (04) :426-430

[4] The structure of MCM-48 determined by electron crystallography [J].

Carlsson, A ;

Kaneda, M ;

Sakamoto, Y ;

Terasaki, O ;

Ryoo, R ;

Joo, SH .

JOURNAL OF ELECTRON MICROSCOPY, 1999, 48 (06) :795-798

[5] A novel anionic surfactant templating route for synthesizing mesoporous silica with unique structure [J].

Che, S ;

Garcia-Bennett, AE ;

Yokoi, T ;

Sakamoto, K ;

Kunieda, H ;

Terasaki, O ;

Tatsumi, T .

NATURE MATERIALS, 2003, 2 (12) :801-805

[6] Ordered nanoporous polymer-carbon composites [J].

Choi, M ;

Ryoo, R .

NATURE MATERIALS, 2003, 2 (07) :473-476

[7] Freeze fracture electron microscopy of lyotropic lipid systems: Quantitative analysis of the inverse Micellar cubic phase of space group Fd3m (Q(227)) [J].

Delacroix, H ;

GulikKrzywicki, T ;

Seddon, JM .

JOURNAL OF MOLECULAR BIOLOGY, 1996, 258 (01) :88-103

[8] Structural investigations of AMS-n mesoporous materials by transmission electron microscopy [J].

Garcia-Bennett, AE ;

Terasaki, O ;

Che, S ;

Tatsumi, T .

CHEMISTRY OF MATERIALS, 2004, 16 (05) :813-821

[9] Control of structure, pore size and morphology of three-dimensionally ordered mesoporous silicas prepared using the dicationic surfactant [CH3(CH2)15N(CH3)2(CH2)3N(CH3)3]Br2 [J].

Garcia-Bennett, AE ;

Willliamson, S ;

Wright, PA ;

Shannon, IJ .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (12) :3533-3540

[10]

HUNER HMA, 2002, J MATER CHEM, V12, P20

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