Rapid access to discrete and monodisperse block co-oligomers from sugar and terpenoid toward ultrasmall periodic nanostructures

Author:

Isono TakuyaORCID,Komaki Ryoya,Lee Chaehun,Kawakami Nao,Ree Brian J.,Watanabe Kodai,Yoshida Kohei,Mamiya Hiroaki,Yamamoto TakuyaORCID,Borsali Redouane,Tajima KenjiORCID,Satoh ToshifumiORCID

Abstract

AbstractDiscrete block co-oligomers (BCOs) are gaining considerable attention due to their potential to form highly ordered ultrasmall nanostructures suitable for lithographic templates. However, laborious synthetic routes present a major hurdle to the practical application. Herein, we report a readily available discrete BCO system that is capable of forming various self-assembled nanostructures with ultrasmall periodicity. Click coupling of propargyl-functionalized sugars (containing 1–7 glucose units) and azido-functionalized terpenoids (containing 3, 4, and 9 isoprene units) afforded the discrete and monodisperse BCOs with a desired total degree of polymerization and block ratio. These BCOs microphase separated into lamellar, gyroid, and cylindrical morphologies with the domain spacing (d) of 4.2–7.5 nm. Considering easy synthesis and rich phase behavior, presented BCO systems could be highly promising for application to diverse ~4-nm nanofabrications.

Funder

MEXT | Japan Society for the Promotion of Science

Iketani Science and Technology Foundation

Asahi Glass Foundation

Publisher

Springer Science and Business Media LLC

Subject

Materials Chemistry,Biochemistry,Environmental Chemistry,General Chemistry

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