A new kind of barbituric acid based taper shaped rodlike compound 4-[2,4,6-trioxotetrahydropyrimidin-5(2%H%)-ylidene]methylphenyl-3,4,5-tris(dodecyloxy)benzoate(BA3/12),consisting of a styrene conjugate rodlike core with the barbituric acid at one end,and benzoate wedge unit with triple alkyl chain at the other end was synthesized.The properties were investigated with polarising optical microscopy(POM),differential scanning calorimetry(DSC),X-ray diffraction(XRD),scanning electron microscope(SEM),infrared spectrum(IR),nuclear magnetic resonance(NMR) spectroscopy and fluorescence emission spectrum.Compound BA3/12 can self-assemble into columnar liquid crystalline(LC) phase with c2mm lattice.The structure of complex BA/T between BA3/12 and triazine 6-[5-(4-[3,4-bis(dodecyloxy)benzyl]oxyphenyl)thiophen-2-yl]-1,3,5-triazine-2,4-diamine(1T2/12) was initially identified via IR and 1H NMR.This complex BA/T showed both liquid crystalline property in its pure state and supramolecular organogels with three-dimensional networks in organic solvents.%合成了一端含巴比妥酸,另一端含带三条烷基链苯甲酸酯楔形单元,中间为苯乙烯共轭单元的棒状分子5-4-[3,4,5-三(十二烷氧基)苯甲酸酯]苯乙烯-(1%H,3H%)-2,4,6嘧啶三酮(BA3/12);采用偏光显微镜(POM)、示差扫描量热法(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)、核磁共振波谱(NMR)和荧光光谱等对其进行了表征.结果表明,BA3/12能自组装形成晶格结构为c2mm的长方柱相液晶;红外光谱及核磁共振氢谱表征数据初步证实了BA3/12与三嗪化合物6-(5-4-[3,4-双(十二烷氧基)]苄氧基苯基)噻吩-2,4-二氨基-1,3,5三嗪(1T2/12)形成的等摩尔氢键复合物BA/T的结构;BA/T不仅具有液晶性质且能形成具有三维网络状结构的超分子凝胶.
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