Rahul Ahmed, Paresh Kumar Behera, Anjana K N, Anitha B, Alakananda Patra, Sandeep Kumar, Manoj Ag Namboothiry, Ammathnadu Sudhakar Achalkumar
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Novel Class of Ambipolar Columnar Liquid Crystals Based on Cyclic Dipeptide and Isatin Hybrids.
A new class of cyclic dipeptide-isatin hybrids was synthesized using 2,5-diketopiperazine and various isatin derivatives bearing flexible chains and extended aromatic rings in a double Knoevenagel condensation process. These new series demonstrate high solubility and good thermal stability with decomposition temperatures exceeding 370 °C, especially the molecular design with efficient space-filling (CI5 and CI6) stabilized columnar liquid crystalline phase. The hole and electron carrier mobility of the CI5 compound, measured using the space charge limited current (SCLC) technique, were found to be 9.46×10-4 cm2/V.s and 7.88×10-4 cm2/V.s respectively. The stabilization of columnar self-assembly and observation of ambipolar charge carrier mobility in cyclic dipeptide-isatin hybrids make them a promising class of self-assembling organic semiconductors.
期刊介绍：
ChemPhysChem is one of the leading chemistry/physics interdisciplinary journals (ISI Impact Factor 2018: 3.077) for physical chemistry and chemical physics. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies.
ChemPhysChem is an international source for important primary and critical secondary information across the whole field of physical chemistry and chemical physics. It integrates this wide and flourishing field ranging from Solid State and Soft-Matter Research, Electro- and Photochemistry, Femtochemistry and Nanotechnology, Complex Systems, Single-Molecule Research, Clusters and Colloids, Catalysis and Surface Science, Biophysics and Physical Biochemistry, Atmospheric and Environmental Chemistry, and many more topics. ChemPhysChem is peer-reviewed.
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