A Family of Highly Ordered Mesoporous Polymer Resin and Carbon Structures from Organic−Organic Self-Assembly

ABSTRACTAs an important method for preparing ordered mesoporous polymer and carbon, organic template directed self-assembly is facing challenges because of the weak non-covalent interactions between the organic templates and the building blocks. Herein we developed a novel synthetic procedure based on a reactive template-induced self-assembly to construct ordered mesoporous framework. The aldehyde end-group of reactive template can react with the building blocks (i.e., resol) to form a stable covalent bond during the self-assembly process. This leads to an enhanced interaction between resol and template and thus achieves the formation of ordered mesostructure.

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Ultrafast Crystallization of Ordered Mesoporous Metal Oxides and Carbon in Seconds

10.26434/chemrxiv.14554257.v1 ◽

2021 ◽

Author(s):

Leyan Wang ◽

Geok Leng Seah ◽

Yun Li ◽

Wei Han Tu ◽

Edward W. Corcoran ◽

...

Keyword(s):

Joule Heating ◽

Self Assembly ◽

Carbon Nanostructures ◽

Anatase Tio2 ◽

Mesoporous Metal Oxides ◽

Carbon Structures ◽

Crystalline Oxide ◽

Ordered Mesoporous ◽

Mesoporous Oxide ◽

Mesoporous Metal

This Communication describes a facile strategy coupling block copolymer-directed self-assembly with high-power Joule heating to form highly crystalline and long-range ordered mesoporous oxide and carbon nanostructures in just a few seconds. The combined approach is compatible with various self-assembled hybrid systems, generating mesoporous composites of γ-Al2O3-carbon, γ-Al2O3/MgO-carbon and anatase-TiO2-carbon with p6mm symmetry, as well as mesoporous non-close-packed carbon structures. Removing the polymer/carbon gives well-defined mesoporous all-γ-Al2O3 and all-anatase-TiO2 structures. Impregnation of chloroplatinic acid followed by Joule heating yields platinum nanoparticles decorated on the channel walls of mesoporous γ-Al2O3-carbon structures. The rapid formation of thermally stable and periodically ordered crystalline oxide, carbon and oxide-carbon structures. <br>

Download Full-text

Ultrafast Crystallization of Ordered Mesoporous Metal Oxides and Carbon in Seconds

10.26434/chemrxiv.14554257 ◽

2021 ◽

Author(s):

Leyan Wang ◽

Geok Leng Seah ◽

Yun Li ◽

Wei Han Tu ◽

Edward W. Corcoran ◽

...

Keyword(s):

Joule Heating ◽

Self Assembly ◽

Carbon Nanostructures ◽

Anatase Tio2 ◽

Mesoporous Metal Oxides ◽

Carbon Structures ◽

Crystalline Oxide ◽

Ordered Mesoporous ◽

Mesoporous Oxide ◽

Mesoporous Metal

This Communication describes a facile strategy coupling block copolymer-directed self-assembly with high-power Joule heating to form highly crystalline and long-range ordered mesoporous oxide and carbon nanostructures in just a few seconds. The combined approach is compatible with various self-assembled hybrid systems, generating mesoporous composites of γ-Al2O3-carbon, γ-Al2O3/MgO-carbon and anatase-TiO2-carbon with p6mm symmetry, as well as mesoporous non-close-packed carbon structures. Removing the polymer/carbon gives well-defined mesoporous all-γ-Al2O3 and all-anatase-TiO2 structures. Impregnation of chloroplatinic acid followed by Joule heating yields platinum nanoparticles decorated on the channel walls of mesoporous γ-Al2O3-carbon structures. The rapid formation of thermally stable and periodically ordered crystalline oxide, carbon and oxide-carbon structures. <br>

Download Full-text