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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (8): 1306-1312.DOI: 10.16553/j.cnki.issn1000-985x.2026.0002

• 研究论文 • 上一篇    下一篇

一例镉配合物的合成、晶体结构及固态荧光性质

马新晶1(), 赵九州1, 邱潇薇1,2, 孙赞1,2()   

  1. 1.青海民族大学化学与材料科学学院,西宁 810007
    2.青海省纳米材料与技术重点实验室,西宁 810007
  • 收稿日期:2026-01-05 出版日期:2026-08-20 发布日期:2026-08-26
  • 通信作者: 孙赞,博士,副教授。E-mail:sunzan_2006@126.com
  • 作者简介:马新晶(2002—),女,吉林省人,硕士研究生。E-mail:809748670@qq.com
  • 基金资助:
    青海省自然科学基金(2020-ZJ-964Q)

Preparation, Crystal Structure and Solid-State Fluorescent Properties of a Cadmium Coordination Polymer

MA Xinjing1(), ZHAO Jiuzhou1, QIU Xiaowei1,2, SUN Zan1,2()   

  1. 1.School of Chemistry and Materials Science,Qinghai Minzu University,Xining 810007,China
    2.Qinghai Provincial Key Laboratory of Nanomaterials and Technology,Xining 810007,China
  • Received:2026-01-05 Online:2026-08-20 Published:2026-08-26

摘要: 利用4-磺酸基-N-(4-羧基苯基)-1,8-萘二甲酰亚胺(H2SCND)和2,2'-联吡啶(2,2'-bpy)为配体,采用溶剂热法合成了一例镉配合物{[Cd(SCND)(2,2'-bpy)(H2O)]·1.25H2O} n (CP1),通过元素分析(EA)、X射线单晶衍射(SXRD)、红外光谱(IR)、热重分析(TGA)、粉末X射线衍射(PXRD)进行表征。X射线单晶衍射分析结果显示,配合物CP1属于单斜晶系,P21/n空间群,晶胞参数为a=1.066 58(10) nm,b=1.098 37(10) nm,c=2.361 91(3) nm,β=100.527(10)°。中心金属Cd为六配位,位于扭曲的八面体几何构型中,参与配位的6个原子中,3个O原子(O2、O1#2和O7#1)分别来自3个不同SCND配体,2个N原子(N2和N3)来自2,2'-bpy,另有1个O原子(O1W)来自1个水分子。SCND配体连接Cd中心形成一维环链结构,相邻的环链之间通过C—H…O氢键、O—H…O氢键、π…π堆积形成了3D超分子结构。分析了Hirshfeld表面不同原子间接触的占比分布,其中H…H相互作用对分子表面贡献率为30.5%,居于首位。在固态荧光测试中,配合物CP1于378 nm激发波长下,在440 nm处呈现出显著的荧光发射峰,凸显出该配合物作为潜在蓝光材料的价值。

关键词: 镉配位聚合物; 溶剂热合成; 晶体结构; HSA; 固态荧光性质

Abstract: A cadmium coordination polymer, {[Cd(SCND)(2,2'-bpy)(H2O)]·1.25H2O} n (CP1), was synthesized via solvothermal method using 4-sulfo-N-(4-carboxyphenyl)naphthalene-1,8-dicarboximide (H2SCND) and 2,2'-bipyridine (2,2'-bpy) as ligands. Elemental analysis (EA), single-crystal X-ray diffraction (SXRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA) and powder X-ray diffraction (PXRD) were employed to characterize CP1. Single-crystal X-ray diffraction analysis reveals that CP1 crystallizes in the monoclinic space group P21/n with the following unit cell parameters: a=1.066 58(10) nm, b=1.098 37(10) nm, c=2.361 91(3) nm, and β=100.527(10)°. The central cadmium ion is hexacoordinated, forming a distorted octahedral configuration. Among six atoms involved in the coordination, there comprises three oxygen donors (O2, O1#2, O7#1) derived from three separate SCND ligands, two nitrogen atoms (N2, N3) from the 2,2'-bpy ligand, and one oxygen atom (O1W) from a coordinated water molecule. Through the bridging effect of SCND ligands, the Cd(II) ions are connected into 1D cyclic chains. These adjacent chains are further intertwined into a 3D supramolecular architecture through the cooperative action of C—H…O, O—H…O hydrogen bonding and π…π stacking interactions. Hirshfeld surface analysis was performed to evaluate the distribution of interatomic contact contributions on the molecular surface, among which the H…H interaction contributed 30.5% to the molecular surface, ranking first. Additionally, solid-state fluorescent behavior of CP1 was explored. When excited at 378 nm, CP1 shows an intense emission peak centered at 440 nm, highlighting its potential application as a blue-light material.

Key words: cadmium coordination polymer; solvothermal synthesis; crystal structure; Hirshfeld surface analysis; solid-state fluorescent property

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