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http://dx.doi.org/10.4313/JKEM.2016.29.1.35

Preparation and Characterization of Cy3 Dye for LCD Color Filter  

Lee, Sang Dong (Department of Display Engineering, Pukyong National University)
Hyun, Dong Kyoun (Ukseong Chemical)
Jeong, Yeon Tae (Department of Display Engineering, Pukyong National University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.1, 2016 , pp. 35-39 More about this Journal
Abstract
In this research, we focused on the improvement of cy3 dye's characteristics for LCD color filter. Solubility and thermal stability are main characteristics of dyes for LCD color filter. We performed experiment to change counter cation of cy3 dyes with alkoxy substituent for these purposes. These cy3 dyes (1b~5b) were prepared through the synthetic procedure of three steps. The synthesized new cy3 dyes were charaterized by using NMR, FT-IR, UV/Vis spectroscopy, and TGA. These cy3 dyes showed purple color and maximum absorption wavelength (${\lambda}_{max}$) in the range of 578~590 nm in UV/Vis spectrum. We confirmed that solubility and thermal stability of cy3 dyes were dependent on the structure of counter cation. Cy3 dyes with alkoxy substituent have good solubility in organic solvents such as dichloromethane, methanol, and acetone. Especially, Cy3 dye with 4-nitrobenzyl counter cation (5b) gave excellent solubility characteristics.
Keywords
Cyanine dye; Cy3; LCD color filter; Maximum absorption wavelength; Solubility characteristics; Thermal stability;
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Times Cited By KSCI : 2  (Citation Analysis)
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