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Open AccessArticle

Synthesis and a Photo-Stability Study of Organic Dyes for Electro-Fluidic Display

by Yong Deng 1,2,3, Shi Li 1, Dechao Ye 2,3, Hongwei Jiang 1, Biao Tang 1,* and Guofu Zhou 1,2,3
1
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
2
Shenzhen Guohua Optoelectronics Tech. Co. Ltd., Shenzhen 518110, China
3
Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(1), 81; https://doi.org/10.3390/mi11010081
Received: 9 December 2019 / Revised: 31 December 2019 / Accepted: 7 January 2020 / Published: 11 January 2020
(This article belongs to the Special Issue Optofluidic Devices and Applications)
Electro-fluidic display (EFD) is one of the most promising reflective displays because of its full color and video speed. Colored EFD oil, which normally consists of soluble organic dyes and non-polar solvent, plays a critical role in color, electro-optical behavior, and the reliability of the EFD devices. In this paper, we report our research on two kinds of electro-fluidic dyes based on anthraquinone and azo pyrazolone, including their synthesis, structure characterization, and application properties. Changes of absorbance curves, color coordinates of oils, and photoelectric responses of devices were studied in detail under accelerated irradiation to investigate the photo-stability and reliability properties of synthesized oil materials and devices. Photoelectric responses and photo stability of dyes are highly varied depending on their structures. We found that 1,4-dlialkylamino anthraqinone and mono azo pyrazolone dyes are much more stable than 1,8-dlialkylamino anthraqinone and corresponding bisazo pyrazolone dyes. View Full-Text
Keywords: electro-fluidic display; organic dye; colored oil; photo-stability electro-fluidic display; organic dye; colored oil; photo-stability
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MDPI and ACS Style

Deng, Y.; Li, S.; Ye, D.; Jiang, H.; Tang, B.; Zhou, G. Synthesis and a Photo-Stability Study of Organic Dyes for Electro-Fluidic Display. Micromachines 2020, 11, 81.

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