Liquid Crystalline Cyclotriphosphazenes: Full Substitute Trimeric Derivative with 12-carbon-chain Mesogen Moiety

Öz

Full substituted p-(dodecyloxy)-phenol derivative of cyclotriphosphazene (trimer) was synthesized in order

to investigate its mesogenic properties. Firstly, p-(dodecyloxy)-phenol (1) was synthesized from the reaction

of hydroquinone and 1-bromododecane. Hexachlorocyclotriphosphazene (trimer) was reacted in a 1:8

molar ratio in tetrahydrofurane (THF) presence of sodium hyride (NaH) as base at room temperature for 24

hours and then under the reflux for a day. Full substituted derivative (2) was obtained and its structure was

determined by mass analysis, and by FT–IR, 1H and 31P {1H} NMR spectroscopic techniques. Additionally

thermal and mesomorphic behaviours were examined by differential scanning calorimetry (DSC),

polarising optical microscopy (POM) and X-ray diffraction (XRD) techniques. By contrast with literature,

results showed that compound 2 has liquid crystal behavior.

Anahtar Kelimeler

• Cyclotriphosphazene,Liquid crystal,Differential scanning calorimeter,Polarising optical microscopy,X-ray Diffraction

Kaynakça

1. Chang[37] Chang [37] Chang -ZhiZhi , L.;L.;L.; MatsuoMatsuoMatsuoMatsuoMatsuoMatsuo, Y.; NakamuraNakamuraNakamura NakamuraNakamuraNakamuraNakamura, E. LumineLumineLumineLumine s- cent bow cent bowcent bowcent bow -tietie -shaped shaped shaped shaped decaaryl [decaaryl [ decaaryl [decaaryl [ decaaryl [60 ] fullerene] fullerene] fullerene] fullerene] fullerene mesogemesoge mesoge ns. J. ns. J. ns. J. ns. J. ns. J. ns. J. Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009; Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009; Am. Chem. Soc. Com. 2009; Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009;Am. Chem. Soc. Com. 2009; 131, 17058131, 17058131, 17058131, 17058131, 17058131, 17058131, 17058131, 17058131, 17058131, 17058-17059.17059.17059.17059.17059.17059.