Synthesis and mesomorphism of 1,1-disubstitued ferrocene liquid crystals with a schiff’s base bridge
To investigate the influence of alkyl chain on thermotropic and mesomorphic properties of 1,1’-disubstitued ferrocene derivatives, two series of ferrocene derivatives containing Schiffs base, 1,1’-C8H17FcC6H4COOC6H4CH=NC6H4OOCC6H4R1 (R1 = H, OCnH2n+1, n = 2, 4, 6, 8 ) and 1,1’-C8H17FcC6H4COOC6H4CH=NC6H4N=NC6H4R2 (R2 = Br, C1, CH3 ) have been synthesized and characterized by IR and 1H NMR. Polarized optical microscopy (POM) and differential scanning calorimetry (DSC) results showed that all compounds exhibit nematic mesophase. The results show that the flexible alkyl chain connecting with ferrocene moiety could lower the melting points and clearing points, favor the formation of nematic mesophase.
Ferrocene Metallomesogen Liquid crystal Nematic phase
Qing Yan Ping Hu Wen-Hao Yu Bi-Qin Wang Ke-Qing Zhao
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066,China
国际会议
2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)
昆明
英文
162-166
2009-08-02（万方平台首次上网日期，不代表论文的发表时间）