Self-Assembly of Pluronic F127-Silica Spherical Core-Shell Nanoparticles in Cubic Close-Packed Structures

被引：45

作者：

Kerkhofs, Stef ^{[1
]}

Willhammar, Tom ^{[2
]}

Van Den Noortgate, Heleen ^{[1
]}

Kirschhock, Christine E. A. ^{[1
]}

Breynaert, Eric ^{[1
]}

Van Tendeloo, Gustaaf ^{[2
]}

Bals, Sara ^{[2
]}

Martens, Johan A. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Louvain, Belgium

[2] Univ Antwerp, Electron Microscopy Mat Sci EMAT, B-2020 Antwerp, Belgium

来源：

CHEMISTRY OF MATERIALS | 2015年 / 27卷 / 15期

基金：

欧洲研究理事会;

关键词：

ORDERED MESOPOROUS SILICA; AQUEOUS-SOLUTIONS; TRIBLOCK COPOLYMERS; NEUTRON-SCATTERING; ZEOLITE SYNTHESIS; SBA-15; MATERIALS; MECHANISM; CRYSTAL; PORES; THERMODYNAMICS;

D O I：

10.1021/acs.chemmater.5b01772

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 new ordered mesoporous silica material (COK-19) with cubic symmetry is synthesized by silicate polycondensation in a citric acid/citrate buffered micellar solution of Pluronic F127 triblock copolymer near neutral pH. SAXS, nitrogen adsorption, TEM, and electron tomography reveal the final material has a cubic close packed symmetry (Fm (3) over barm) with isolated spherical mesopores interconnected through micropores. Heating of the synthesis medium from room temperature to 70 degrees C results in a mesopore size increase from 7.0 to 11.2 nm. Stepwise addition of the silicate source allows isolation of a sequence of intermediates that upon characterization with small-angle X-ray scattering uncovers the formation process via formation and aggregation of individual silica-covered Pluronic micelles.

引用

页码：5161 / 5169

页数：9

共 48 条

[21] Phase domain of the cubic im3m mesoporous silica in the EO106PO70EO106-butanol-H2O system [J].

Kleitz, F ;

Kim, TW ;

Ryoo, R .

LANGMUIR, 2006, 22 (01) :440-445

[22] Large cage face-centered-cubic Fm3m mesoporous silica:: Synthesis and structure [J].

Kleitz, F ;

Liu, DN ;

Anilkumar, GM ;

Park, IS ;

Solovyov, LA ;

Shmakov, AN ;

Ryoo, R .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (51) :14296-14300

[23] Reduction and analysis of SANS and USANS data using IGOR Pro [J].

Kline, Steven R. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2006, 39 :895-900

[24] ORDERED MESOPOROUS MOLECULAR-SIEVES SYNTHESIZED BY A LIQUID-CRYSTAL TEMPLATE MECHANISM [J].

KRESGE, CT ;

LEONOWICZ, ME ;

ROTH, WJ ;

VARTULI, JC ;

BECK, JS .

NATURE, 1992, 359 (6397) :710-712

[25] Organic-inorganic hybrid hollow nanospheres with microwindows on the shell [J].

Liu, Jian ;

Yang, Qihua ;

Zhang, Lei ;

Yang, Hengquan ;

Gao, Jinsuo ;

Li, Can .

CHEMISTRY OF MATERIALS, 2008, 20 (13) :4268-4275

[26] Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS [J].

Liu, Jian ;

Yang, Qihua ;

Zhao, X. S. ;

Zhang, Lei .

MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 106 (1-3) :62-67

[27] Ordered mesoporous silica with large cage-like pores: Structural identification and pore connectivity design by controlling the synthesis temperature and time [J].

Matos, JR ;

Kruk, M ;

Mercuri, LP ;

Jaroniec, M ;

Zhao, L ;

Kamiyama, T ;

Terasaki, O ;

Pinnavaia, TJ ;

Liu, Y .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (03) :821-829

[28] Increasing the oral bioavailability of the poorly water soluble drug itraconazole with ordered mesoporous silica [J].

Mellaerts, Randy ;

Mols, Raf ;

Jammaer, Jasper A. G. ;

Aerts, Caroline A. ;

Annaert, Pieter ;

Van Humbeeck, Jan ;

Van den Mooter, Guy ;

Augustijns, Patrick ;

Martens, Johan A. .

EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS, 2008, 69 (01) :223-230

[29] Enhanced release of itraconazole from ordered mesoporous SBA-15 silica materials [J].

Mellaerts, Randy ;

Aerts, Caroline A. ;

Van Humbeeck, Jan ;

Augustijns, Patrick ;

Van den Mooter, Guy ;

Martens, Johan A. .

CHEMICAL COMMUNICATIONS, 2007, (13) :1375-1377

[30] Molecular organization of hydrophobic molecules and co-adsorbed water in SBA-15 ordered mesoporous silica material [J].

Mellaerts, Randy ;

Roeffaers, Maarten B. J. ;

Houthoofd, Kristof ;

Van Speybroeck, Michiel ;

De Cremer, Gert ;

Jammaer, Jasper A. G. ;

Van den Mooter, Guy ;

Augustijns, Patrick ;

Hofkens, Johan ;

Martens, Johan A. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (07) :2706-2713

← 1 2 3 4 5 →