De Novo Synthesis of Free‐Standing Flexible 2D Intercalated Nanofilm Uniform over Tens of cm2. Issue 22 (15th October 2021)

• Record Type: Journal Article
• Authors: Ravat, Prince; Uchida, Hikaru; Sekine, Ryosuke; Kamei, Ko; Yamamoto, Akihisa; Konovalov, Oleg; Tanaka, Motomu; Yamada, Teppei; Harano, Koji; Nakamura, Eiichi
• Is Part Of: Advanced materials. Volume 34:Issue 22(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-15
• Subjects: fullerene -- hydrogen‐bonding network -- intercalated structure -- proton conductivity -- supramolecular polymerization -- 2D material -- ultrathin film; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202106465
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: Of a variety of intercalated materials, 2D intercalated systems have attracted much attention both as materials per se, and as a platform to study atoms and molecules confined among nanometric layers. High‐precision fabrication of such structures has, however, been a difficult task using the conventional top‐down and bottom‐up approaches. The de novo synthesis of a 3‐nm‐thick nanofilm intercalating a hydrogen‐bonded network between two layers of fullerene molecules is reported here. The two‐layered film can be further laminated into a multiply film either in situ or by sequential lamination. The 3 nm film forms uniformly over an area of several tens of cm 2 at an air/water interface and can be transferred to either flat or perforated substrates. A free‐standing film in air prepared by transfer to a gold comb electrode shows proton conductivity up to 1.4 × 10 −4 S cm −1 . Electron‐dose‐dependent reversible bending of a free‐standing 6‐nm‐thick nanofilm hung in a vacuum is observed under electron beam irradiation. Abstract : The de novo synthesis of a 3‐nm‐thick nanofilm intercalating a hydrogen‐bonded water network between two layers of fullerene molecules is reported. The film can be laminated into a multiply film either in situ or by sequential lamination. The film is uniform over an area of 30 cm 2, and shows electron‐dose‐dependent reversible bending and proton conductivity up to 10 −4 S cm −1 .