Citation: Rui Bao, Min Pan, Jin Jun Qiu, Cheng Mei Liu. Synthesis and characterization of six-arm star-shaped liquid crystalline cyclotriphosphazenes[J]. Chinese Chemical Letters, ;2010, 21(6): 682-685. doi: 10.1016/j.cclet.2009.12.020 shu

Synthesis and characterization of six-arm star-shaped liquid crystalline cyclotriphosphazenes

School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 30 September 2009

Fund Project: The authors are grateful to NSF of China (No. 50703013) and Independent Innovative Position of Hubei Province for financial support of this work.

The synthesis and mesomorphic properties of a new class of liquid crystalline cyclotriphosphazenes with rigid cyanostilbene groups and flexible alkoxy groups are reported. The thermal behaviors of cyclotriphosphazene derivatives 5a-5d are studied by the means of differential scanning calorimetry, polarizing optical microscopy. Nematic phases were observed in compounds 5a-5d both on heating and cooling. The clear temperatures of compounds 5a-5d slightly increased with increasing length of terminal alkyl chain. Compounds 5a-5d showed different mesogenic region from minimum 5℃ to maximum 142℃.
- Cyclotriphosphazene,
- Cyanostilbene,
- Liquid crystal,
- Star-shaped molecule,
- Synthesis
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