Effect of Polyhedral Oligomeric Silsesquioxanes-modified Gold Nanoparticles on 4-n-Pentyl-4'-ctanobiphenyl Liquid Crystal Properties

doi:10.11944/j.issn.1000-0518.2018.11.170450

Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (11): 1378-1383.DOI: 10.11944/j.issn.1000-0518.2018.11.170450

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Effect of Polyhedral Oligomeric Silsesquioxanes-modified Gold Nanoparticles on 4-n-Pentyl-4'-ctanobiphenyl Liquid Crystal Properties

MA Li^a,XU Jingwei^b,YANG Chuanqi^c,LI Yunhui^a,MA Yuqin^a^*(),ZHAO Yongxia^b^*()

^aSchool of Chemistry and Environmental Engineering,Changchun University of Science and Technology,Changchun 130000,China
^bState Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^cSchool of Business,Changchun Guanghua University,Changchun 133333,China

Received:2017-12-12 Accepted:2018-03-22 Published:2018-10-31 Online:2018-10-31
Contact: MA Yuqin,ZHAO Yongxia
Supported by:
Supported by the Jilin Science and Technology Development Project(No. 20170204038GX)

Abstract

Abstract:

In order to effectively reduce the turn-on voltage of the liquid crystal device and low power consumption characteristics. Gold nanoparticles with an average particle diameter of about 5 nm were prepared by using polyhedral oligomeric silsesquioxanes(POSS) as the modification ligand and NaBH₄ as the reductant to reduce the chloroauric acid. Gold nanoparticles were doped into nematic liquid crystal 4-n-pentyl-4'-cyanobiphenyl(5CB) with different mass fractions to study its effect on the viscosity, the threshold voltage and the phase transition temperature. The results show that the viscosity and the threshold voltage of 5CB are decreased by doping with POSS modified gold nanoparticles. Moreover, the phase transition temperature range of 5CB is broadened by addition of the gold nanoparticles.

Key words: gold nanoparticles, phase transition temperature, threshold voltage, viscosity, liquid crystal

MA Li,XU Jingwei,YANG Chuanqi,LI Yunhui,MA Yuqin,ZHAO Yongxia. Effect of Polyhedral Oligomeric Silsesquioxanes-modified Gold Nanoparticles on 4-n-Pentyl-4'-ctanobiphenyl Liquid Crystal Properties[J]. Chinese Journal of Applied Chemistry, 2018, 35(11): 1378-1383.

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Effect of Polyhedral Oligomeric Silsesquioxanes-modified Gold Nanoparticles on 4-n-Pentyl-4'-ctanobiphenyl Liquid Crystal Properties

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