Structure and Property Diversity of Chiral Helicene Oligomers

DOI Web Site Web Site 被引用文献7件 参考文献188件 オープンアクセス

書誌事項

公開日
2015-12-15
資源種別
journal article
権利情報
  • http://doi.wiley.com/10.1002/tdm_license_1.1
  • http://doi.wiley.com/10.1002/tdm_license_1.1
DOI
  • 10.1002/0471440264.pst643
公開者
Wiley

説明

<jats:p>Helicenes are nonplanar polycyclic aromatic compounds formed by ortho‐fused aromatic rings, which have helical chirality. Incorporating helicenes into oligomers and polymers can provide a huge diversity of structure and property. 1,12‐Dimethylbenzo[<jats:italic>c</jats:italic>]phenanthrenes were employed in this study for such an approach. Various helicene oligomers have been synthesized, which differ in the helicene structure, chirality, spacer structure, side chain structure, oligomer length, linker structure, cyclic/acyclic mode, and homo‐/hetero‐multidomain mode. The oligomers exhibited various reversible aggregation/disaggregation properties and formed bimolecular, trimolecular, polymolecular, inter/intramolecular, and tetramolecular ααββ aggregates. Reversible self‐assembly of the aggregates can occur, providing gels, vesicles, liquid crystals, and self‐assembled monolayers (SAM). Dynamic properties are also a notable feature of the helicene oligomers, which include sharp thermal responses, thermal hysteresis, memory effect, self‐catalysis, the capability to count the numbers 1 and 2, and concentration amplification. The properties range from the molecular level to the molecular aggregate, self‐assembly, and bulk levels, which can be tuned by structural modifications of helicene oligomers.</jats:p>

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