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Fu J, Zhang X, Miao B, et al. Light-responsive expansion-contraction of spherical nanoparticle grafted with azopolymers. J Chem Phys. 2017;146(16):164901doi: 10.1063/1.4981914.
Fu, J., Zhang, X., Miao, B., & Yan, D. (2017). Light-responsive expansion-contraction of spherical nanoparticle grafted with azopolymers. The Journal of chemical physics, 146(16), 164901. https://doi.org/10.1063/1.4981914
Fu, Jie, et al. "Light-responsive expansion-contraction of spherical nanoparticle grafted with azopolymers." The Journal of chemical physics vol. 146,16 (2017): 164901. doi: https://doi.org/10.1063/1.4981914
Fu J, Zhang X, Miao B, Yan D. Light-responsive expansion-contraction of spherical nanoparticle grafted with azopolymers. J Chem Phys. 2017 Apr 28;146(16):164901. doi: 10.1063/1.4981914. PMID: 28456201.
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J Chem Phys. 2017 Apr 28;146(16):164901. doi: 10.1063/1.4981914.

Light-responsive expansion-contraction of spherical nanoparticle grafted with azopolymers.

The Journal of chemical physics

Jie Fu, Xinghua Zhang, Bing Miao, Dadong Yan

Affiliations

  1. Department of Physics, Beijing Normal University, Beijing 100875, China.
  2. School of Science, Beijing Jiaotong University, Beijing 100044, China.
  3. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 28456201 DOI: 10.1063/1.4981914

Abstract

Due to the very importance for both fundamental research and technological applications, smart materials with stimuli-responsive properties have been studied intensively. Theoretical investigation contributes to this endeavor through constructing and analyzing a model system which captures main features of the corresponding complex material, wherefrom useful insight can be provided to the trial-and-error experiments. We here report a theoretical study on the smart spherical nanoparticle grafted with light-responsive azobenzene-containing polymers. Utilizing the photoisomerization ability of the azobenzene group, nanoparticles can undergo a light-induced expansion-contraction transition. The wormlike chain based single chain in mean field theory, which has been developed by us recently, is used to investigate this transition in detail. Exploring a large parameter space, our results definitely determine the parameters, including the chain length and effective Kuhn length of grafted chain, nanoparticle radius, grafting density, and position of the azobenzene group along the chain contour, to admit optimum light-responsive behavior of the smart nanoparticle, which provides a guide for experimentalists to design this type of material in a rational manner.

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