三例有机胺模板硼酸盐合成、表征以及铁电薄膜制备和特性研究

发布时间：2018-03-09 02:25

本文选题：模板硼酸盐　切入点：晶体结构　出处：《广东工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：模板硼酸盐有着多样的结构和优秀的物理化学性质。硼原子可以和氧原子形成BO3平面三角形、BO4四面体等单元,并且BO3和BO4进一步组成形状大小各异的硼氧聚阴离子结构,如孤岛状、链状、层状和三维立体结构。硼酸盐丰富的结构类型给我们提供了具有优良磁学、光学等性能潜质的功能材料的重要的来源。本文采用以金属盐、硼酸、有机胺为主要原料,采用溶剂热方法,合成了三种有机模板硼酸盐。我们使用X射线单晶衍射仪器测试这三种硼酸盐化合物的晶体结构,并进一步研究了相关的化合物的热重,红外等性质。化合物1属于单斜晶系,为孤立的硼酸盐配合物,其分子式为Ni`[N(CH2CH2NH2)3]·[B5O7(OH)3],空间群为P21c,单胞参数a=8.9720(8)?,b=20.6887(19)?,c=9.3441(9)?,α=90.00°,β=99.930(2)°,γ=90.00°,Z=4,单胞体积V=1708.46?3。化合物2属于三斜晶系,为一维链状模板硼酸盐,其分子式为[Ni(en)3]2·[B7O10(OH)3]Cl2,空间群为P-1,单胞参数a=8.9841(18)?,b=14.265(3)?,c=14.937(3)?,α=95.556(3)°,β=94.572(2)°,γ=91.183(2)°,Z=4,单胞体积V=1898.47?3。化合物3属于单斜晶系,为一维链状模板硼酸盐,其分子式为Ni(en)3·[B5O7(OH)2BO(OH)2]·2H3O,空间群为P21,单胞参数a=7.7494(17)?,b=8.9548(18)?,c=15.724(3)?,α=90.00°,β=92.580(19)°,γ=90.00°,Z=4,单胞体积V=1090.05?3。化合物3是一种手性一维链状硼酸盐。在本课题组实验的基础上,本论文中进一步对[C6N2H15]·[B5O6(OH)4]薄膜制备改良研究。本论文中薄膜尺寸、厚度容易控制,性质稳定,制备方法简单,重复性好,在室温下即可完成制作,原料易得且不含对环境有害的重金属元素。具有良好的铁电性的同时还具有良好的柔韧度,在可穿戴设备等领域具有比较重要的意义。
[Abstract]:The template borates have a variety of structures and excellent physical and chemical properties. Boron atoms and oxygen atoms can form units such as BO3 plane triangular tetrahedron, and BO3 and BO4 further form boron polyanions of different shapes and sizes. The rich structural types of borates provide us with important sources of functional materials with excellent magnetic and optical properties. Three kinds of organic template borates were synthesized by solvothermal method. The crystal structures of these three borates were measured by X-ray single crystal diffraction, and the thermogravimetric properties of the related compounds were studied. Infrared isotherms. Compound 1 belongs to monoclinic system and is an isolated borate complex. The molecular formula of compound 1 is Ni` [Nu CH2CH2NH2H3] 路[B5O7OHH3], the space group is P21c, and the unit cell parameter (ah8.9720h8)? BX 20. 6887? 9. 3441? , 90.00 掳, 99.930 掳, 90.00 掳, 90.00 掳, V = 1708.46? 3. Compound 2 belongs to the triclinic crystal system, which is a one-dimensional chain template borate. Its molecular formula is [Ni(en)3] 2 路[B7O10OHH3] Cl2, the space group is P-1, and the unit cell parameter (a) 8.9841 ~ (18)? BX 14.265? CX 14.937? , 伪 = 95.556 ~ (3) 掳, 尾 = 94.572 ~ (2) 掳, 纬 ~ (9) = 91.183 ~ (3)) ~ (2) 掳, unit cell volume V _ (V) = 1898.47? 3. Compound 3 belongs to monoclinic system and belongs to one-dimensional chain template borate. Its molecular formula is Ni(en)3 路[B _ 5O _ 7 OH _ (2) BOH _ (2)) 路2H _ (3O), space group is P21, unit cell parameter a _ (7.749) ~ (4) ~ (17)? 8. 9548? C. C. 15.724? , 90.00 掳, 92.580 掳, 90.00 掳, 90.00 掳, V = 1090.05? 3. Compound 3 is a chiral one-dimensional chain borate. On the basis of our experiments, the preparation of [C _ 6N _ 2H _ (15)] 路[B _ 5O _ (6) O _ H _ (4)] thin films was further studied in this paper. It has good reproducibility and can be made at room temperature. The raw material is easy to be obtained and does not contain heavy metal elements harmful to the environment. It has good ferroelectric properties and good flexibility, which is of great significance in wearable equipment and other fields.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O641.4;TB383.2

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