【[Adv. Mater. Interfaces]】Macroscopic Oriented Gold Nanorods in Polyvinyl Alcohol Films for Polarization-Dependent Multi-Color Displays
作者：Dai, L. W.; Lu, X. F.; Song, L. P.; Huang, Y. J.*; Liu, B. Q.; Zhang, L.; Zhang, J. W.; Wu, S.; Chen*,
關鍵字：1. Wang, L.; Jian, Y.; Le, X.; Lu, W.; Ma, C.; Zhang, J.; Huang, Y.; Huang, C.-F.; Chen, T., Actuating and memorizing bilayer hydrogels for a self-deformed shape memory function. Chem. Commun. 2018.
論文來源：期刊
具體來源：Adv. Mater. Interfaces
發表時間：2018年
Due to their abundant
optical colors, durable color generation, and high refreshing rate, smart
chromic nano-materials (SCNMs) have been employed in various applications.
However, most SCNMs often require multi-component materials, precise morphology
control, and complicated modulation to realize multicolor changes, which limits
their widely practical applications. In our present
study, we demonstrate a simple and effective strategy to achieve the flexible
and cost-effective multicolor gold nanorods/polymer hybrid film, by tuning
macroscopic oriented gold nanorods (Au NRs) in films and a synergy of
polarization-dependent surface plasmon resonance. Au NRs were first
functionalized with methoxypoly(ethylene glycol)thiol (mPEG-SH) to
improve the compatibility, ensuring Au NRs can be homogenously dispersed in the polyvinyl alcohol (PVA) matrix with high particle density. The macroscopic oriented alignment of Au NRs can be achieved by the elongation of the PVA
polymer molecular chains. Under different polarized excitation directions, the
same strip of the hybrid film exhibits various colors including red, orange,
yellow, and green. Therefore, our strategy provides a simple and powerful
approach to achieve macroscopic oriented anisotropic nanoparticles in the polymer
matrix, and the resultant hybrid films are promising in various practical
applications such as color displays, optical devices, and plasmonic biosensors