Issue 3, 2012
From the journal:

New Journal of Chemistry

Synthesis and characterization of thermally stable dyes with improved optical properties for dye-based LCD color filters†

Jun Choi,‡a   Se Hun Kim,‡a   Woosung Lee,a   Chun Yoonb  and  Jae Pil Kim*a  

* Corresponding authors

a Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea
E-mail: jaepil@snu.ac.kr
Fax: +82 2 880 7238
Tel: +82 2 880 7238

b Department of Chemistry, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul 143-747, Korea
E-mail: chuny@sejong.ac.kr
Fax: +82 2 3408 3218
Tel: +82 2 3408 3218

Abstract

We have designed and synthesized six phthalocyanine dyes and one benzoperylene dye for dye-based green Liquid Crystal Display (LCD) color filters. The solubility, spectral properties and thermal stability of the prepared six phthalocyanine dyes varied depending on their isomeric structures and core metals. They were dissolved in industrial solvent–binder composites and spin coated with and without yellow compensating benzoperylene dye into dye-based LCD color filters. The prepared color filters exhibited superior optical properties compared to conventional pigment-based ones due to the fluorescence of benzoperylene dye and less light scattering resulting from the smaller particle size of the dyes. The phthalocyanine dyes substituted at the peripheral (β) positions showed enough thermal stability for color filters and the yellow benzoperylene dye effectively compensated the spectra for vivid green colors.

Graphical abstract: Synthesis and characterization of thermally stable dyes with improved optical properties for dye-based LCD color filters

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Article information

DOI
https://doi.org/10.1039/C2NJ20938A
Article type
Paper
Submitted
06 Nov 2011
Accepted
21 Dec 2011
First published
13 Jan 2012

New J. Chem., 2012,36, 812-818

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Synthesis and characterization of thermally stable dyes with improved optical properties for dye-based LCD color filters

J. Choi, S. H. Kim, W. Lee, C. Yoon and J. P. Kim, New J. Chem., 2012, 36, 812 DOI: 10.1039/C2NJ20938A

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