Programmed Hierarchical Hybrid Nanostructures from Fullerene‐Dendrons and Pyrene‐Dendrons

The construction of fullerene (C60) hierarchical nanostructures with the help of amphiphilic molecules remains a challenging task in nanoscience and nanotechnology. Utilizing the host–guest complex concept, sub‐10 nm layered superstructures are constructed from a monofunctionalized C60 dendron (C60D...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2018-12, Vol.14 (49), p.e1803291-n/a
Main Authors: Park, Minwook, Kang, Dong‐Gue, Yoon, Won‐Jin, Choi, Yu‐Jin, Koo, Jahyeon, Lim, Seok‐In, Jeong, Kwang‐Un
Format: Article
Language:English
Subjects:
Bilayers
Binding
Buckminsterfullerene
dendron
Fluorescence
fullerene
Fullerenes
hierarchical nanostructure
host–guest complex
Liquid crystals
Multilayers
Nanostructure
Nanotechnology
self‐assembly
Superstructures
Titration
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Summary:The construction of fullerene (C60) hierarchical nanostructures with the help of amphiphilic molecules remains a challenging task in nanoscience and nanotechnology. Utilizing the host–guest complex concept, sub‐10 nm layered superstructures are constructed from a monofunctionalized C60 dendron (C60D, guest) and tweezer‐like pyrene dendron (PD, host). Since C60D and PD are asymmetric shape amphiphiles having liquid crystal (LC) dendrons, both C60D and PD construct head‐to‐head bilayer superstructures by themselves. From fluorescence titration experiments, it is realized that the host–guest complex shows 1:1 stoichiometric binding with a binding constant (Ksv = 2.45 × 105m−1). Based on the morphological observations and scattering analyses, it is found that buckle‐like asymmetric building blocks (C60D·PD) are self‐assembled by the host–guest complex and construct multilayer hybrid nanostructures. The hierarchical hybrid nanostructures consist of the self‐assembled C60D·PD bilayer with a 2D C60·P nanoarray sandwiched between LC dendrons. This advanced strategy is expected to be a practicable and rational guideline for the fabrication of programmed hierarchical hybrid nanostructures. A mono‐functionalized C60 dendron and pyrene‐based dendron tweezer is synthesized for the construction of hierarchical hybrid nanostructures by donor–acceptor complex. The formation of the host–guest complex is systematically investigated, and the construction of the hierarchical hybrid nanostructure possessing well‐defined 2D C60·P nanoarray is demonstrated.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201803291