Journal
ACS MACRO LETTERS
Volume 7, Issue 8, Pages 1040-1045Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.8b00445
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Funding
- National Natural Science Foundation of China [21674062, U1632117]
- Science and Technology Commission of Shanghai Municipality [16ZR1422600, 16PJ1406600, 17JC1400700]
- NC State Nonwovens Institute
- Mann+Hummel
- EPSRC [EP/L022532/1] Funding Source: UKRI
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Materials with controlled porosity play a prominent role in industrial and domestic applications. Although a rich array of methods has been developed to tune the pore size over a broad range (from <1 nm to >1 mu m), the fabrication of functional materials with a fully open porous structure with sub-100 nm pore size has remained a significant challenge. Herein, we report the hierarchical assembly of block copolymer toroidal micelles with an intrinsic cavity into multidimensional nanoporous superstructures (pore size 85-90 nm) by modulation of interparticle interactions. The toroids aggregate into oligo-supermicelles or 2D hexagonal arrays through van der Waals interactions upon drying on a substrate, while synergistic hydrogen bonding interactions further promote the formation of 3D nanoporous superstructures directly in solution. Thus, toroidal micelles can be manipulated as a type of distinctive building block to construct nanoporous materials.
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