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Gram-Scale Synthesis and Multifunctional Properties of a Two-Dimensional Layered Copper(II) Coordination Polymer
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-03-24 , DOI: 10.1021/acsapm.9b01219 Sachin Ashok Bhat 1, 2 , Nani Babu Palakurthy , Nagaiah Kambhala , Angappane Subramanian 1 , Doddamane S. Shankar Rao 1 , Subbarao Krishna Prasad 1 , Channabasaveshwar V. Yelamaggad 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-03-24 , DOI: 10.1021/acsapm.9b01219 Sachin Ashok Bhat 1, 2 , Nani Babu Palakurthy , Nagaiah Kambhala , Angappane Subramanian 1 , Doddamane S. Shankar Rao 1 , Subbarao Krishna Prasad 1 , Channabasaveshwar V. Yelamaggad 1
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Accomplishing an inexpensive and industrially scalable, robust multifunctional material exhibiting a range of technologically significant phenomena is apparently essential for its projected use in a wide range of device applications. Herein we report on the extremely simple, gram-scale synthesis, electrical conductivity, redox behavior, thermoelectric properties, and magnetism of a two-dimensional (2D) layered copper(II) coordination polymer (COP) formed by treating the ligand 3,3′-diaminobenzidine (DAB) with copper(II) acetate monohydrate, Cu(OAc)2·H2O. The experimental observations show that the COP synthesized, hereafter termed Cu(DAB), and stored under ambient conditions remains intact, exhibiting resistance to air, light, heat, water, and alkaline aqueous solution. FTIR spectroscopy, Raman spectral analyses, microanalytical data, SEM-EDX imaging, surface analysis by XPS/AFM, powder X-ray diffraction, and HRTEM suggest a neutral 2D COP with Cu(DAB) repeating units. While the AC experiments completely rule out ionic conductivity, two-probe DC electrical conductivity measurements on a pellet (bulk sample) as a function of temperature (150–320 K) evidence the electrical conductivity of the COP. Notably, at room temperature (298 K) the conductivity was found to be 0.01 S/m. The inherent p-type conduction was revealed by Hall effect experiments. Apart from being redox-active, it shows thermoelectric behavior, and magnetic susceptibility vs temperature measurements reveal the spin crossover from diamagnetic to the paramagnetic state upon cooling the bulk sample.
中文翻译：
二维层状铜（II）配位聚合物的克级合成和多功能性质
实现一种廉价的，工业上可扩展的，坚固的多功能材料，该材料具有一系列技术上显着的现象，显然对于其在各种设备应用中的预期用途至关重要。本文中，我们报道了通过处理配体3,3形成的二维（2D）层状铜（II）配位聚合物（COP）的极其简单的克级合成，电导率，氧化还原行为，热电特性和磁性。 '-二氨基联苯胺（DAB）与一水合乙酸铜（II），Cu（OAc）2 ·H 2O.实验观察结果表明，合成的COP（以下称为Cu（DAB））在环境条件下存储时保持完整，对空气，光，热，水和碱性水溶液具有抵抗力。FTIR光谱，拉曼光谱分析，显微分析数据，SEM-EDX成像，通过XPS / AFM进行的表面分析，粉末X射线衍射和HRTEM表明具有Cu（DAB）重复单元的中性二维COP。尽管交流电实验完全排除了离子电导率，但对小球（大块样品）的双探针直流电导率测量结果是温度（150-320 K）的函数，证明了电导率。值得注意的是，在室温（298K）下，发现电导率为0.01S / m。霍尔效应实验揭示了固有的p型传导。除了具有氧化还原活性外，
更新日期：2020-04-23
中文翻译：
二维层状铜（II）配位聚合物的克级合成和多功能性质
实现一种廉价的，工业上可扩展的，坚固的多功能材料，该材料具有一系列技术上显着的现象，显然对于其在各种设备应用中的预期用途至关重要。本文中，我们报道了通过处理配体3,3形成的二维（2D）层状铜（II）配位聚合物（COP）的极其简单的克级合成，电导率，氧化还原行为，热电特性和磁性。 '-二氨基联苯胺（DAB）与一水合乙酸铜（II），Cu（OAc）2 ·H 2O.实验观察结果表明，合成的COP（以下称为Cu（DAB））在环境条件下存储时保持完整，对空气，光，热，水和碱性水溶液具有抵抗力。FTIR光谱，拉曼光谱分析，显微分析数据，SEM-EDX成像，通过XPS / AFM进行的表面分析，粉末X射线衍射和HRTEM表明具有Cu（DAB）重复单元的中性二维COP。尽管交流电实验完全排除了离子电导率，但对小球（大块样品）的双探针直流电导率测量结果是温度（150-320 K）的函数，证明了电导率。值得注意的是，在室温（298K）下，发现电导率为0.01S / m。霍尔效应实验揭示了固有的p型传导。除了具有氧化还原活性外，
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