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Synthesis and Properties of Macromolecules with Well-Defined Aromatic or Aliphatic Rings

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Macromolecular Chemistry".

Deadline for manuscript submissions: closed (31 January 2020) | Viewed by 3542

Special Issue Editor


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Guest Editor
Department of Chemistry and Chemical Engineering, Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-Ku, Niigata 950-2181, Japan
Interests: functional polymer; permselective membranes; polymer chemistry; polymerization; asymmetric polymerization; optical resolution
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Special Issue Information

Dear Colleagues,

The function of polymer materials can be controlled by their molecular structures. Especially ring structures are very important to realize high performances. For example, in macromolecules for gas permselective membranes, well-defined molecular-sized spaces such as nanopores or nanospaces are important. Since conventional polymers usually have a linear backbone but no ring structures, it is not easy to regulate their spaces between macromolecules in the solid state, although they can be easily fabricated due to their solubility. On the other hand, although conventional network polymers contain many ring structures inside their macromolecules, their sizes are not regulated, and they are insoluble and non-processable.

The synthesis of many kinds of ring-containing polymers has been reported so far. However, discussion about the relationships between their ring structures and properties and functions were not enough because their ring structures were not well-defined and processability was low. Therefore, this Special Issue invites original research about precise synthesis and characterization of macromolecules with well-defined aromatic or aliphatic rings. It can accept articles on well-defined network polymers and inorganic network polymers, such as graphene-like polymers. Both original articles and reviews are welcome.

Prof. Toshiki Aoki
Guest Editor

Manuscript Submission Information

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Keywords

  • Ring-containing polymers
  • Network polymers
  • Nanopores
  • Nanospaces
  • Graphene
  • Separation membranes

Published Papers (1 paper)

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Research

10 pages, 1844 KiB  
Article
Recognition Selectivities of Lasso-Type Pseudo[1]rotaxane Based on a Mono-Ester-Functionalized Pillar[5]arene
by Wen-Xue Zhang, Lu-Zhi Liu, Wen-Gui Duan, Qing-Qing Zhou, Cui-Guang Ma and Yan Huang
Molecules 2019, 24(15), 2693; https://doi.org/10.3390/molecules24152693 - 24 Jul 2019
Cited by 5 | Viewed by 3240
Abstract
Two types of mono-ester-functionalized pillar[5]arenes, P1 and P2, bearing different side-chain groups, were synthesized. Their host–guest complexation and self-inclusion properties were studied by 1H NMR and 2D nuclear overhauser effect spectroscopy (NOESY) NMR measurements. The results showed that the substituents on their [...] Read more.
Two types of mono-ester-functionalized pillar[5]arenes, P1 and P2, bearing different side-chain groups, were synthesized. Their host–guest complexation and self-inclusion properties were studied by 1H NMR and 2D nuclear overhauser effect spectroscopy (NOESY) NMR measurements. The results showed that the substituents on their phenolic units have a great influence on the self-assembly of both pillar[5]arenes, although they both could form stable pseudo[1]rotaxanes at room temperature. When eight bulky 4-brombutyloxy groups were capped on the cavity, instead of methoxy groups, pseudo[1]rotaxane P1 became less stable and its locked ester group in the inner space of cavity was not as deep as P2, leading to distinctly different host–guest properties between P1 and P2 with 1,6-dibromohexane. Moreover, pillar[5]arene P1 displayed effective molecular recognition toward 1,6-dichlorohexane and 1,2-bromoethane among the guest dihalides. In addition, the self-complex models and stabilities between P1 and P2 were also studied by computational modeling and experimental calculations. Full article
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