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Phase behaviors of binary mixtures composed of electron-rich and electron-poor triphenylene discotic liquid crystals 下载免费PDF全文
Disk-like liquid crystals(DLCs) can self-assemble to ordered columnar mesophases and are intriguing onedimensional organic semiconductors with high charge carrier mobility.To improve their applicable property of mesomorphic temperature ranges,we exploit the binary mixtures of electronic donor-acceptor DLC materials.The electron-rich2,3,6,7,10,11-hexakis(alkoxy)triphenylenes(C4,C6,C8,C10,C12) and an electron-deficient tetrapentyl triphenylene-2,3,6,10-tetracarboxylate have been prepared and their binary mixtures have been investigated.The mesomorphism of the1:1(molar ratio) mixtures has been characterized by polarizing optical microscopy(POM),differential scanning calorimetry(DSC),and small angel x-ray scattering(SAXS).The self-assembled monolayer structure of a discogen on a solid-liquid interface has been imaged by the high resolution scanning tunneling microscopy(STM).The match of peripheral chain length has important influence on the mesomorphism of the binary mixtures. 相似文献
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采用循环伏安(CV)、线性扫描伏安(LSV)和示差脉冲伏安(DPV)等方法研究了8-羟基脱氧鸟苷(8-OHdG)在壳聚糖(Chi)/石墨烯(GR)修饰的玻碳电极(GCE)上的电化学行为,8-OHdG在该修饰电极上氧化峰电流与其浓度在3.5×10-7~1.4×10-4mol/L范围内呈良好的线性关系,检测限为6.4×10-8mol/L(S/N=3)。将Chi/GR/GCE用于检测DNA氧化损伤,8-OHdG在修饰电极上的氧化峰电流与损伤的DNA质量浓度在10~300 mg/L范围内呈良好的线性关系,损伤DNA检出限为0.026 mg/L(S/N=3)。 相似文献
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采用循环伏安(CV)、线性扫描伏安(LSV)和示差脉冲伏安(DPV)等方法研究了8-羟基脱氧鸟苷(8-OHdG)在壳聚糖(Chi)/石墨烯(GR)修饰的玻碳电极(GCE)上的电化学行为,8-OHdG在该修饰电极上氧化峰电流与其浓度在3.5×10-7~1.4×10-4 mol/L范围内呈良好的线性关系,检测限为6.4×10-8 mol/L(S/N=3)。 将Chi/GR/GCE用于检测DNA氧化损伤,8-OHdG在修饰电极上的氧化峰电流与损伤的DNA质量浓度在10~300 mg/L范围内呈良好的线性关系,损伤DNA检出限为0.026 mg/L(S/N=3)。 相似文献
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