Special Issue "Self-Assembled Supramolecular Polymers via Strong H Bonding"

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

Deadline for manuscript submissions: closed (12 October 2018)

Special Issue Editor

Guest Editor
Dr. Ana M. Garcia-Deibe

Department of Inorganic Chemistry, Universidade de Santiago de Compostela, Campus Vida, E-15782. Santiago de Compostela, Spain
Website | E-Mail
Interests: supramolecular chemistry; coordination chemistry; crystallography; H bonding; chirality

Special Issue Information

Dear Colleagues,

The great interest devoted to H‑bonded supramolecular polymers assembled is based on the profound effects that H-bonding can cause in polymeric materials. Its influence is not limited to crystalline structures, but physical, thermal, mechanical, optoelectronic and surface properties. Logically, many of these effects markedly depend on the strength of the interactions.

Typical examples of strong H-bonds are low-barrier (LBHB) and symmetric H‑bonds, as well as resonance and charge assisted H-bonds (RAHB and CAHB). However, we can consider many types of H‑bonds, from classic H-bonds to C‑H···π interactions. Hence, an unusually short H-bond of any type, could be also considered as strong.

In the case of polymers and polymer blends, an additional consideration must be included in the casuistry, as two different types of interactions can occur: Intrachain and interchain. Furthermore, although any individual H-bond can appear weak, the binding can be strong, and also highly specific, when multiple complementary H‑bonds are involved.

With so many possibilities, we would like to invite to investigators to submit papers discussing any aspect related to the role of strong H-bonds in supramolecular oligomers, polymers or polymer blends of any nature: Purely organic or metalosupramolecular.

Therefore, potential topics could include, but not be limited to:

  • Crystal growth of supramolecular polymers or polymer blends, including the modelling of crystal growth.
  • Advances in development of polymeric materials.
  • H-bonded 1D OFs and MOFs.
  • Property characterisation (physical, thermal, mechanical, optoelectronic, magnetic, electric, etc.) and possible relationships to external conditions.
  • Microstructure analysis and micro–macro correlation of the observed properties and their modelling.

Dr. Ana M. Garcia-Deibe
Guest Editor

Manuscript Submission Information

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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 1200 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

  • Strong H-bonding
  • H-bonded oligomers
  • H-bonded polymers
  • Supramolecular polymers
  • Metalosupramolecular polymers
  • Polymer blends
  • Crystal growth
  • Physical properties
  • Thermal properties
  • Mechanical properties
  • Optoelectronic properties
  • Electric properties

Published Papers (2 papers)

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Research

Open AccessCommunication A Crystallographic Study of a Novel Tetrazolyl-Substituted Nitronyl Nitroxide Radical
Crystals 2018, 8(9), 334; https://doi.org/10.3390/cryst8090334
Received: 10 August 2018 / Revised: 17 August 2018 / Accepted: 19 August 2018 / Published: 21 August 2018
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Abstract
Spin-labelled compounds are widely used in chemistry, physics, biology, and material sciences, but the directed synthesis of some functionalized organic radicals is still a challenge. We succeeded in the preparation of a tetrazolyl-substituted nitronyl nitroxide radical in pure crystalline form. According to the
[...] Read more.
Spin-labelled compounds are widely used in chemistry, physics, biology, and material sciences, but the directed synthesis of some functionalized organic radicals is still a challenge. We succeeded in the preparation of a tetrazolyl-substituted nitronyl nitroxide radical in pure crystalline form. According to the single-crystal X-ray data, intra- (NH…O, 2.43 Å) and inter-molecular hydrogen bonds (NH…O, 1.91 Å) are formed between NH groups of the tetrazole cycles and O atoms of the paramagnetic moieties. The intermolecular H-bonds connect the molecules forming chains along the a-axis. Moreover, there are short intermolecular contacts between the O atoms (3.096 Å) and between the O and C atoms (3.096 Å) of the nitronyl nitroxide moieties within the chain. The spin-unrestricted broken-symmetry calculations performed at the BS-UB3LYP/def2-TZVP level of theory predicted a sufficient ferromagnetic interaction (J ≈ 20 cm–1) between the adjacent radicals inside the chain, but a weak antiferromagnetic interaction (−J ≤0.2 cm−1) between the nearest radicals belonging to the different chains. Thus, a rare case when stable radicals, the tetrazolyl-substituted nitronyl nitroxides, are ordered into ferromagnetic chains was revealed; an investigation of the magneto-structural correlations inherent in the nitroxide radical will demand a special experiment in the sub-Kelvin regime. Full article
(This article belongs to the Special Issue Self-Assembled Supramolecular Polymers via Strong H Bonding)
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Graphical abstract

Open AccessArticle Self-Assembled Structures of Diblock Copolymer/Homopolymer Blends through Multiple Complementary Hydrogen Bonds
Crystals 2018, 8(8), 330; https://doi.org/10.3390/cryst8080330
Received: 13 August 2018 / Revised: 17 August 2018 / Accepted: 17 August 2018 / Published: 19 August 2018
PDF Full-text (2585 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A poly(styrene-b-vinylbenzyl triazolylmethyl methyladenine) (PS-b-PVBA) diblock copolymer and a poly(vinylbenzyl triazolylmethyl methylthymine) (PVBT) homopolymer were prepared through a combination of nitroxide-mediated radical polymerizations and click reactions. Strong multiple hydrogen bonding interactions of the A···T binary pairs occurred
[...] Read more.
A poly(styrene-b-vinylbenzyl triazolylmethyl methyladenine) (PS-b-PVBA) diblock copolymer and a poly(vinylbenzyl triazolylmethyl methylthymine) (PVBT) homopolymer were prepared through a combination of nitroxide-mediated radical polymerizations and click reactions. Strong multiple hydrogen bonding interactions of the A···T binary pairs occurred in the PVBA/PVBT miscible domain of the PS-b-PVBA/PVPT diblock copolymer/homopolymer blend, as evidenced in Fourier transform infrared and 1H nuclear magnetic resonance spectra. The self-assembled lamellar structure of the pure PS-b-PVBA diblock copolymer after thermal annealing was transformed to a cylinder structure after blending with PVBT at lower concentrations and then to a disordered micelle or macrophase structure at higher PVBT concentrations, as revealed by small-angle X-ray scattering and transmission electron microscopy. Full article
(This article belongs to the Special Issue Self-Assembled Supramolecular Polymers via Strong H Bonding)
Figures

Graphical abstract

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