Ordered structure constructed from <i>C</i><sub>2</sub>-symmetric hexa-<i>peri</i>-hexabenzocoronene linked with oligo(dimethylsiloxane).
basic_science · Level V
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- Record sourced from PubMed, PMID 35437558.
- Also identified by DOI 10.1039/d2sm00059h.
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Abstract
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-<i>peri</i>-hexabenzocoronene (HBC) core and two oligo(dimethylsiloxane) (ODMS) tails with <i>C</i><sub>2</sub> 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 <i>via</i> 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.