Rapid fabrication of hierarchically structured supramolecular nanocomposite thin films in one minute

Joseph Kao, Kari Thorkelsson, Peter Bai, Zhen Zhang, Cheng Sun and Ting Xu ()
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Joseph Kao: University of California
Kari Thorkelsson: University of California
Peter Bai: University of California
Zhen Zhang: Northwestern University
Cheng Sun: Northwestern University
Ting Xu: University of California

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Functional nanocomposites containing nanoparticles of different chemical compositions may exhibit new properties to meet demands for advanced technology. It is imperative to simultaneously achieve hierarchical structural control and to develop rapid, scalable fabrication to minimize degradation of nanoparticle properties and for compatibility with nanomanufacturing. Here we show that the assembly kinetics of supramolecular nanocomposites in thin films are governed by the energetic cost arising from defects, the chain mobility and the activation energy for inter-domain diffusion. By optimizing only one parameter, the solvent fraction in the film, the assembly kinetics can be precisely tailored to produce hierarchically structured thin films of supramolecular nanocomposites in one minute. Moreover, the strong wavelength-dependent optical anisotropy in the nanocomposite highlights their potential applications for light manipulation and information transmission. The present study may open a new avenue in designing manufacture-friendly continuous processing for the fabrication of functional nanocomposite thin films.

Date: 2014
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DOI: 10.1038/ncomms5053

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