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Self-assembly of functional nanoscale materials

Published online by Cambridge University Press:  10 February 2020

Feng Bai
Affiliation:
Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, China; baifengsun@gmail.com
Kaifu Bian
Affiliation:
Sandia National Laboratories, USA; kb435@cornell.edu
Binsong Li
Affiliation:
Navitas Systems LLC, USA; binsongli@gmail.com
Casey Karler
Affiliation:
The University of New Mexico, and Sandia National Laboratories, USA; caseykarler@gmail.com
Ashley Bowman
Affiliation:
The University of New Mexico, and Sandia National Laboratories, USA; bowmana20@unm.edu
Hongyou Fan
Affiliation:
Sandia National Laboratories, and The University of New Mexico, USA; hfan@sandia.gov
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Abstract

Self-assembly techniques are powerful and efficient methods for the synthesis of nanoscale materials. Using these techniques and their combination with other bottom-up fabrication processes, materials with hierarchical features can be produced with form and function in multiple length scales. We synthesize multifunctional nanoparticles through surfactant-assisted noncovalent interactions using nanoparticle building blocks. Self-assembly of these nano-building blocks results in functional materials that exhibit well-defined morphologies and hierarchical architectures for a wide range of applications. Hierarchically structured porphyrin nanocrystals can be synthesized through surfactant micelle-confined noncovalent interactions of photoactive porphyrins. We can amplify the intrinsic advantages of individual photoactive porphyrins by engineering them into well-defined active nanostructures. Through kinetic control, these nanocrystals exhibit precisely defined size, shape, and spatial arrangement of the individual porphyrins, which facilitates intermolecular mass and energy transfer. These self-assembly techniques provide remarkable flexibility to design morphologies and architectures that produce desirable properties for practical applications including photocatalysis, photodegradation, and phototherapy.

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Type
Technical Feature
Copyright
Copyright © Materials Research Society 2020

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