Journal
SOFT MATTER
Volume 18, Issue 17, Pages 3430-3436Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2sm00059h
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Funding
- National Key R&D Program of China [2018YFB0703702]
- National Natural Science Foundation of China [51725301, 51921002]
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Two novel organic-inorganic block molecules capable of forming sub-5-nm ordered structures were reported in this study. The sizes of the structures can be regulated by adjusting the number of chains. These block molecules have the potential for sub-5-nm nanopatterning.
The preparation of sub-5-nm ordered structures is very important to the development of today's nanotechnology. Block molecules have the potential to form structures with significantly small characteristic dimensions. Herein two novel organic-inorganic block molecules composed of a hexa-peri-hexabenzocoronene (HBC) core and two oligo(dimethylsiloxane) (ODMS) tails with C-2 symmetry are reported. A hierarchical lamello-columnar structure with a two-dimensional rectangular lattice where HBC cores adopt a tilted arrangement was obtained from their bulk self-assembly. The feature sizes are all below 5 nm and can be regulated via the number of ODMS chains. Sub-5-nm line structures were obtained through spin-coating of the block molecules onto silicon substrates modified with poly(dimethylsiloxane). As organic-inorganic hybrid materials, these block molecules may be further applied in sub-5-nm nanopatterning.
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