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Journal of Nanoparticle Research

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01-08-2012 | Research Paper

Controlling the packing of gold nanoparticles with grafted liquid crystals

Authors: Tie-Ying Ye, Xiao-Fang Chen, Kang Qian, Zhihao Shen, Limin Qi, Xing-He Fan

Published in: Journal of Nanoparticle Research | Issue 8/2012

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Abstract

We present the syntheses of two kinds of gold nanoparticles each of which covered with one of the two thermotropic liquid crystals with different rigidity by ligand exchange reaction. The nanoparticles were functionalized with two kinds of thiol molecules: simple n-alkyl and rod-like mesogens. The chemical structures and purities of the nanocomposites were confirmed by ¹HNMR, FT-IR, and elemental analysis. These liquid crystal-capped gold nanoparticles self-assembled into different structures that were characterized by differential scanning calorimetry, small-angle X-ray scattering, transmission electron microscopy, and SQUID magnetometer. The mesogenic thiols influenced the phase structures of the nanocomposites. Simple lamellar, hexatic B-like, and smectic E-like structures were observed. The packing of gold nanoparticles could thus be controlled. In addition, both nanocomposites showed magnetic properties.

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Title: Controlling the packing of gold nanoparticles with grafted liquid crystals
Authors: Tie-Ying Ye
Xiao-Fang Chen
Kang Qian
Zhihao Shen
Limin Qi
Xing-He Fan
Publication date: 01-08-2012
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 8/2012
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-012-1055-6

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