Special Issue "Structural Design and Properties of Coordination Polymers"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: closed (20 November 2017)

Special Issue Editor

Guest Editor
Dr. George E. Kostakis

Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, Sussex, UK
Website | E-Mail
Interests: 3d/4f, Coordination chemistry, Coordination Clusters, Coordination Polymers, Polynuclear Inorganic Clusters Topology, Topology

Special Issue Information

Dear Celleagues,

The assembly of organic ligands and metal centres yields coordination polymers, many of which find applications in conductivity, catalysis, magnetism, gas sorption, biological sensing and luminescence. The structure and topology of coordination polymers may be manipulated by changing the reaction conditions, leading to a large variety of structurally and topologically unique products. However, controlling and predicting the final outcome of the self-assembly procedure remains one of the major challenges in the field. The final products are often strongly influenced by factors such as the behaviour of a functional group in a molecule, the influence of the crystallization conditions and the various conformations of the components within the crystal.

This Special Issue aims to cover a broad range of subjects in coordination polymer chemistry, which are important to the continued growth of the field, showcase current developments and realise its full potential in applications to address major societal challenges.

Therefore, we invite you to contribute a research article to this Special Issue and provide a clear snapshot of your research in this field.

Dr. George E. Kostakis
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Structural Design and Topological studies
  • Catalysis
  • Health and medical applications
  • Electronic and magnetic properties

Published Papers (2 papers)

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Research

Open AccessArticle Synthesis, Crystal Structure, Gas Absorption, and Separation Properties of a Novel Complex Based on Pr and a Three-Connected Ligand
Crystals 2017, 7(12), 370; doi:10.3390/cryst7120370 (registering DOI)
Received: 29 October 2017 / Revised: 6 December 2017 / Accepted: 7 December 2017 / Published: 11 December 2017
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Abstract
A novel Pr complex, constructed from a rigid three-connected H3TMTA and praseodymium(III) ion, has been synthesized in a mixed solvent system and characterized by X-ray single crystal diffraction, infrared spectroscopy, a thermogravimetric analysis, an element analysis, and powder X-ray diffraction, which
[...] Read more.
A novel Pr complex, constructed from a rigid three-connected H3TMTA and praseodymium(III) ion, has been synthesized in a mixed solvent system and characterized by X-ray single crystal diffraction, infrared spectroscopy, a thermogravimetric analysis, an element analysis, and powder X-ray diffraction, which reveals that complex 1 crystallizes in a three-dimensional porous framework. Moreover, the thermal stabilities and the fluorescent and gas adsorption and separation properties of complex 1 were investigated systematically. Full article
(This article belongs to the Special Issue Structural Design and Properties of Coordination Polymers)
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Open AccessArticle Reversible Single-Crystal-to-Single-Crystal Structural Transformation in a Mixed-Ligand 2D Layered Metal-Organic Framework: Structural Characterization and Sorption Study
Crystals 2017, 7(12), 364; doi:10.3390/cryst7120364
Received: 20 November 2017 / Revised: 3 December 2017 / Accepted: 5 December 2017 / Published: 7 December 2017
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Abstract
A 3D supramolecular network, [Cd(bipy)(C4O4)(H2O)2]·3H2O (1) (bipy = 4,4′-bipyridine and C4O42− = dianion of H2C4O4), constructed by mixed-ligand two-dimensional (2D) metal-organic
[...] Read more.
A 3D supramolecular network, [Cd(bipy)(C4O4)(H2O)2]·3H2O (1) (bipy = 4,4′-bipyridine and C4O42− = dianion of H2C4O4), constructed by mixed-ligand two-dimensional (2D) metal-organic frameworks (MOFs) has been reported and structurally determined by the single-crystal X-ray diffraction method and characterized by other physicochemical methods. In 1, the C4O42− and bipy both act as bridging ligands connecting the Cd(II) ions to form a 2D layered MOF, which are then extended to a 3D supramolecular network via the mutually parallel and interpenetrating arrangements among the 2D-layered MOFs. Compound 1 shows a two-step dehydration process with weight losses of 11.0% and 7.3%, corresponding to the weight-loss of three guest and two coordinated water molecules, respectively, and exhibits an interesting reversible single-crystal-to-single-crystal (SCSC) structural transformation upon de-hydration and re-hydration for guest water molecules. The SCSC structural transformation have been demonstrated and monitored by single-crystal and X-ray powder diffraction, and thermogravimetic analysis studies. Full article
(This article belongs to the Special Issue Structural Design and Properties of Coordination Polymers)
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Figure 1

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Abstract: Two new luminescent coordination polymers (CPs) have been synthesized by employing variable solvent mediated strategy adopted during solvothermal crystallization afforded two supramolecular isomers with phenanthroline-functionalized CdII aminoisophthalate namely [Cd (NH2-ipth(µ-O))(phen)]n (CP1) and [Cd(NH2-ipth)(phen)]n (CP2) (NH2-bdc=5-aminobenzenedicarboxylic acid, phen=1,10-phenanthroline).The CP1 and CP2 are further characterized by X-ray diffraction, thermo gravimetric analysis, IR spectroscopy, elemental analysis and UV-Vis spectra. Choice of two different solvent compositions during solvothermal synthesis result in the formation of two structurally diverse CPs wherein nitrogen of amino group played a prime role in structural diversification of CP1 and CP2 through variable coordination to CdII. Two dimensional (2D) CP1 with non-coordinating amino group crystallizes in Orthorhombic crystal system space group (P21 21 2) along with bridging of an oxygen of carboxylate between two CdII ions, while coordination of nitrogen of amino group to central CdII ions results in formation of two dimensional framework of CP2 which crystallizes in Triclinic (P-1) space group. The structures of CP1 and CP2 are 3D supramolecular network structures assembled by N-H…O and C-H…O hydrogen bonds along with stacking interaction and C-H… interactions. Moreover, the fluorescent phenanthroline introduced to the CP results in a distinguished photoluminescence signature. The influence of the structural diversity of CP’s on their photo-luminescent properties is investigated and discussed in detail.

Keywords: Isomeric CP; solvothermal synthesis, supramolecular isomers, photoluminescence

 

Title: Reversible Solid-State Structural Transformation in a Dynamic Mixed-Ligand Layered Metal-Organic Frameworks: Structure and Sorption Study

Authors: Chih-Chieh Wang,*1 Szu-Yu Ke,1 Kuan-Ting Chen,1 Yi-Fang Hsieh,1 Tzu-Heng Wang,1 Gene-Hsiang Lee,2 and Yu-Chun Chuang3
1Department of Chemistry, Soochow University, Taipei, Taiwan.
2Instrumentation Center, National Taiwan University, Taipei, Taiwan.
3National Synchrotron Radiation Research Center, Hsinchu, Taiwan; E-mail: ccwang@scu.edu.tw

Abstract: A mixed-ligand dynamic metal-organic framework (MOF) namely [Cd(4,4’-bipy)(C4O4)(H2O)2]•3H2O (1) based on squarate (C4O42-) and N,N’-donor ligand, 4,4’-bipyridine (4,4’-bipy), has been synthesized and structurally characterized by single-crystal and powder X-ray diffraction and other physicochemical methods. In compound 1, the C4O42 and 4,4’-bipy both act as bridging ligands connecting the Cd(II) ions to form two-dimensional (2D) layered MOFs, which are extended to a 3D supramolecular architecture via the mutually parallel and interpenetrating arrangements among the 2D layers. Compound 1 shows a two-steps de-hydration process, corresponding to the weight-loss of the guest and coordinated water molecules, respectively, and exhibits an interesting reversible solid-state structural transformations upon de-hydration and re-hydration. These transformations have been established and monitored by exhaustive X-ray powder diffraction, IR spectroscopy, thermogravimetic analysis and morphology studies.

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