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Topologically Directed Assemblies of Semiconducting Sphere-Rod Conjugates
Zhiwei Lin1, Xing Yang1, Hui Xu1
1Department of Polymer Science, College of Polymer Science and Polymer Engineering, The University of Akron , Akron, Ohio 44325, United States.
Journal of the American Chemical Society
|December 5, 2017
Summary
Researchers designed sphere-rod molecules for self-assembly, creating novel organic semiconductor structures. These unique molecular designs enable tunable charge transport properties in advanced materials.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Organic Electronics
Background:
- Self-assembly of designed molecules is crucial for creating functional materials.
- Sphere-like fullerenes (C60) and rod-like oligofluorenes (OF) are key organic semiconductor components.
- Understanding the assembly of molecules with combined shapes is less explored than individual shapes.
Purpose of the Study:
- To investigate the topologically directed self-assembly of sphere-rod conjugates.
- To explore the formation of novel supramolecular structures from these conjugates.
- To determine the impact of molecular topology on the charge transport properties of assembled materials.
Main Methods:
- Synthesis of 24 types of sphere-rod conjugates (C60-OF).
- Utilizing topological direction for controlled self-assembly processes.
- Characterization of the resulting supramolecular lattices and their electronic properties.
Main Results:
- Achieved spontaneous, topologically directed assembly of sphere-rod conjugates.
- Formation of diverse, unconventional semiconducting supramolecular lattices with controlled domain sizes.
- Demonstrated tunable charge transport properties influenced by molecular topology.
Conclusions:
- Persistent molecular topology significantly influences hierarchical assembly.
- Sphere-rod conjugates offer a versatile platform for designing advanced organic semiconductor materials.
- Controlled self-assembly of complex molecular architectures leads to tunable material properties.
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