Synthesis, structural characterization, and luminescence properties of zinc(II) coordination polymers containing bis(4-pyridyl)benzylamine

IF 1.6 4区化学 Q2 Agricultural and Biological Sciences

Journal of Inclusion Phenomena and Macrocyclic Chemistry Pub Date : 2025-01-15 DOI:10.1007/s10847-025-01275-3

Ihsan Ullah, Ngoc Tram Anh Le, Kil Sik Min

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引用次数: 0

Abstract

Two new zinc(II) coordination polymers [Zn(bpba)₂(NO₃)₂]_n (1) and [Zn(bpba)(SO₄)]_n•2nH₂O•nDMF (2) were successfully synthesized by reacting zinc(II) ions with bis(4-pyridyl)benzylamine (bpba) containing different counter anions (NO₃⁻ and SO₄²⁻). The resulting polymers were fully characterized using various experimental techniques: single-crystal X-ray diffraction analysis, elemental analysis, infrared spectra, ultraviolet/visible spectra, and thermogravimetric analysis. Single-crystal X-ray analyses revealed that the zinc(II) ions in 1 and 2 are tetra-coordinated and adopt a distorted tetrahedral geometry. Polymer 1 exhibits a one-dimensional helical chain structure, which extends into two-dimensional supramolecular networks through hydrogen bonding and C-H•••π interactions. Polymer 2 adopts a three-dimensional network structure resulting from the coordination of zinc(II) and sulfate ions as well as bpba ligands. An investigation of the solid-state photoluminescence properties of the polymers at room temperature revealed that their emissions were redshifted compared with those of the free ligand, which is attributed to metal-perturbed intra-ligand charge transfer.

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含双（4-吡啶基）苄胺锌（II）配位聚合物的合成、结构表征及发光性能

通过锌（II）离子与含有不同负离子（NO₃−和SO42−）的双（4-吡啶基）苄胺（bpba）反应，成功合成了两种新型锌（II）配位聚合物[Zn(bpba)2(NO3)2]n(1)和[Zn(bpba)(SO4)]n•2nH2O•nDMF(2)。所得到的聚合物使用各种实验技术进行了充分的表征：单晶x射线衍射分析，元素分析，红外光谱，紫外/可见光谱和热重分析。单晶x射线分析表明，1和2中的锌（II）离子呈四配位，呈畸变四面体结构。聚合物1呈现一维螺旋链结构，通过氢键和C-H•••π相互作用扩展成二维超分子网络。聚合物2是由锌（II）和硫酸盐离子以及双酚巴配体配位形成的三维网状结构。在室温下对聚合物的固态光致发光特性的研究表明，与自由配体相比，它们的发光发生了红移，这是由于金属扰动配体内电荷转移所致。

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来源期刊

Journal of Inclusion Phenomena and Macrocyclic Chemistry 化学-化学综合

CiteScore

3.30

自引率

8.70%

发文量

审稿时长

3-8 weeks

期刊介绍： The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites. The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.