A Dendronized Cellulose Derivative and its Thermotropic Liquid Crystal and Lyotropic Cholesteric Liquid Crystal Behaviors

Abstract:

A novel dendronized cellulose，ethyl cellulose grafted 3,4,5-tris[4-(dodecyloxy) benzyloxy] benzoate (EC-g-DOBOB), which is comprised of ethyl cellulose (EC) backbone with mesogenic moiety DOBOB (3,4,5-tris(4-(dodecyloxy)benzyloxy)benzoic acid) dendron grafted, was designed and synthesized. The structure of EC-g-DOBOB was investigated by means of FTIR, Both thermotropic liquid crystal and lyotropic liquid crystal behaviors of EC-g-DOBOB were studied by combination of DSC, POM and XRD. At room temperature EC-g-DOBOB demonstrated hexagonal columnar mesophase (Φ_h), with the column diameter 5.8 nm, besides it formed lyotropic cholesteric liquid crystal in concentrated chloroform solution with a planar texture.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 2620-2623
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.2620
• Online since: May 2011
• Authors: Yan Ming Dong, Ya Qing Zhao, Er Man Zeng, Liu Lin Yang, Qiang Ge, Xiao Lan Hu
• Keywords: Dendronized Cellulose, Lyotropic Liquid Crystal, Thermotropic Liquid Crystal

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