Block copolymer nanoparticle replicating strategy towards hierarchically mesoporous structured silica with predictable architectures
نویسندگان
چکیده
منابع مشابه
Directed Assembly of Block Copolymer Templates for the Fabrication of Mesoporous Silica Films with Controlled Architectures via 3‐D Replication
Mesoporous silica films with cylindrical or spherical pores up to 40 nm in diameter were fabricated by replicating the morphologies of polystyrene-b-poly(tert-butyl acrylate), PS-b-PtBA, copolymers using CO2-assisted infusion and phase selective condensation of tetraethylorthosilicate within the polymer template. The template structures, including domain packing, orientation and spacing were co...
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Novel composites of highly ordered and stable biphenyl-bridged periodic mesoporous organosilica (PMO) materials confined within the pores of anodic alumina membranes (AAM) were successfully synthesized by evaporation-induced self-assembly (EISA). 4,40-Bis(triethoxysilyl)biphenyl (BTEBP) was used as a precursor in combination with the ionic surfactant cetyltrimethylammonium bromide (CTAB) or tri...
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The toluene solution of a bottlebrush block copolymer, polystyrene–polylactide (PS–PLA), was confined in a cylinder-on-flat geometry, from which the consecutive ‘‘stick-slip’’ motion of the threephase contact line of the PS–PLA solution was effectively regulated as toluene evaporated, thereby yielding gradient stripes at the microscopic scale. Subsequent selective solvent vapor annealing led to...
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Here we report on self-assembly of novel multi-hierarchically structured meso(nano)porous colloidal silica particles which have cylindrical pores of 4-6nm, overall size of ∼10μm and "cracks" of 50-200nm. These cracks make particles look like micro-sponges. The particles were prepared through a modified templated sol-gel self-assembly process. The mechanism of assembly of these particles is inve...
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ژورنال
عنوان ژورنال: Science Bulletin
سال: 2021
ISSN: 2095-9273
DOI: 10.1016/j.scib.2020.07.035