Phase behavior of mesoporous silicas templated by the amphiphilic diblock copolymer poly(ethylene-b-ethylene oxide)

Fabrication and Characterization of Inorganic Silver and Palladium Nanostructures within Hexagonal Cylindrical Channels of Mesoporous Carbon

“…Evaporation-induced self-assembly (EISA) has been developed aggressively as a strategy for the fabrication of mesoporous nanostructures because of its broad applicability to soft templating using various block copolymer templates [1][2][3][4][5][6][7][8][9][10][11][12]. Prior to its development, the pore sizes of mesoporous carbons were limited to approximately 5-10 nm as a result of the need for copolymer templates of low molecular weight [13,14].…”

“…Prior to its development, the pore sizes of mesoporous carbons were limited to approximately 5-10 nm as a result of the need for copolymer templates of low molecular weight [13,14]. The EISA method made it feasible to regulate pore structures and pore sizes and allowed the preparation of various mesoporous materials from water-insoluble systems, including mesoporous silicas [2,7,8,10,[15][16][17][18], mesoporous resins [3,6,9,11], mesoporous TiO 2 [19][20][21], and mesoporous carbons [2,4,12,16,[22][23][24]. The typical procedure used to prepare ordered mesoporous carbons, so-called "template synthesis" [25][26][27][28][29][30], involves the use of mesoporous silicas as hard templates, impregnation of carbon precursors into their mesochannels, carbonization under an inert gas, and finally dissolving the hard template of the "ordered mesoporous silica" through etching in HF (aq) .…”

High-Molecular-Weight PLA-b-PEO-b-PLA Triblock Copolymer Templated Large Mesoporous Carbons for Supercapacitors and CO2 Capture

“…In general, the preparation of mesoporous silicas, phenolic resin, or carbons templated by block copolymer is the most common approach compared with foaming, phase separation, hard-template, and molecular imprinting methods [14][15][16][17]. Using this approach, well-defined mesoporous structures can be obtained since the block copolymer could be self-assembled into different structures through microphase separation connected by covalent bond [18][19][20]. The concept of mediating the hydrogen bonding strength in block copolymer mixtures [21][22][23][24][25][26][27][28][29][30][31][32] to synthesize mesoporous materials has been widely discussed in our previous studies [18,19,[33][34][35].…”

“…Using this approach, well-defined mesoporous structures can be obtained since the block copolymer could be self-assembled into different structures through microphase separation connected by covalent bond [18][19][20]. The concept of mediating the hydrogen bonding strength in block copolymer mixtures [21][22][23][24][25][26][27][28][29][30][31][32] to synthesize mesoporous materials has been widely discussed in our previous studies [18,19,[33][34][35]. Using a commercial pluronic-type poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) triblock copolymer as the template is the most widely used approach to preparing mesoporous materials; however, because of the limitation presented by the molecular weight of this kind of triblock copolymer, it is difficult to prepare mesoporous phenolic or carbon with pore size >10 nm [36][37][38][39][40][41].…”

Hybrid Mesoporous Silicas and Microporous POSS-Based Frameworks Incorporating Evaporation-Induced Self-Assembly

“…Its combination of templated mesophase growth and evaporation of volatile solvents can extend the scope of available mesoporous materials through variations of the types of material frameworks and structure-directing agents. In previous studies, we applied the EISA approach with various templates and matrices; the use of volatile organic solvents—in most cases tetrahydrofuran (THF)—allowed the application of templates having high molecular weight, including PEO- b -PCL, PEO- b -PLLA, PE- b -PEO, PE- b -PEO- b -PCL, and F127 (PEO 106 PPO 70 PEO 106 ) [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. In addition to traditional silica materials, mesoporous organic materials also can be fabricated using the EISA method, including mesoporous phenolic resin [ 37 , 38 , 39 , 40 , 41 ], mesoporous polybenzoxazine [ 42 ], and mesoporous carbon [ 43 , 44 , 45 , 46 ].…”