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Polymers
Special Issues
Advances in Supramolecular Polymer Gels
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Advances in Supramolecular Polymer Gels

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Networks".

Deadline for manuscript submissions: closed (25 February 2023) | Viewed by 5434

Special Issue Editors

Dr. Zoran Džolić

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Guest Editor
Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Interests: gels; supramolecular chemistry; self-assembly; soft materials
Prof. Dr. Massimo Cametti

E-Mail Website
Co-Guest Editor
Dipartimento Chimica Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan, Italy
Interests: coordination polymers; host–guest chemistry; intermolecular interactions; supramolecular gels

Special Issue Information

Dear Colleagues,

Over the last few decades, supramolecular polymers created from the assembly of monomer units through non-covalent interactions have attracted increasing attention. Due to their dynamic nature, they often possess unique properties, such as stimuli-responsiveness, self-healing capabilities, and shape-memory effect, which make them exceptional candidates for the development of smart functional materials and devices. Supramolecular polymer gels (comprising hydro-, organo-, or metallogels) represent an important subclass in the area of supramolecular polymers. Recent intensive investigations carried out by many research groups around the world have resulted in enormous advancements in the understating of the underlying forces responsible for the formation of these soft materials. Furthermore, recent developments promise indeed many advanced applications to be soon available in several fields, including molecular recognition and sensing, selective adsorption and separation, but also biological imaging and drug delivery.

With this Special Issue, we aim to bring attention to some of the new advances in the field of supramolecular polymer gels, from fundamental aspects to applications as soft functional materials and to present future exciting directions for new developments of the field. We would like to take this opportunity to invite contributions from experts in this research area, and we welcome both original research papers as well as review articles.

Prof. Dr. Cametti Massimo
Dr. Zoran Džolić
Guest Editors

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 submissions that pass pre-check are 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. Polymers is an international peer-reviewed open access semimonthly 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 2700 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

  • supramolecular polymers
  • soft materials
  • stimuli-responsive gels
  • self-assembly
  • intermolecular interactions

Published Papers (2 papers)

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Research

9 pages, 1797 KiB  
Communication
In Situ Supramolecular Gel Formed by Cyclohexane Diamine with Aldehyde Derivative
by Jae-Hyeon Park, Min-Hye Kim, Moo-Lyong Seo, Ji-Ha Lee and Jong-Hwa Jung
Polymers 2022, 14(3), 400; https://doi.org/10.3390/polym14030400 - 20 Jan 2022
Cited by 2 | Viewed by 1943
Abstract
Low-molecular-weight gels have great potential for use in a variety of fields, including petrochemicals, healthcare, and tissue engineering. These supramolecular gels are frequently metastable, implying that their properties are kinetically controlled to some extent. Here, we report on the in situ supramolecular gel [...] Read more.
Low-molecular-weight gels have great potential for use in a variety of fields, including petrochemicals, healthcare, and tissue engineering. These supramolecular gels are frequently metastable, implying that their properties are kinetically controlled to some extent. Here, we report on the in situ supramolecular gel formation by mixing 1,3-cyclohexane diamine (1) and isocyanate derivative (2) without any catalysis at room temperature in various organic solvents. A mixture of building blocks 1 and 2 in various organic solvents, dichloromethane, tetrahydrofuran, chloroform, toluene, and 1,4-dioxane, resulted in the stable formation of supramolecular gel at room temperature within 60–100 s. This gel formation was caused by the generation of urea moieties, which allows for the formation of intermolecular hydrogen-bonding interactions via reactions 1 and 2. In situ supramolecular gels demonstrated a typical entangled fiber structure with a width of 600 nm and a length of several hundred μm. In addition, the supramolecular gels were thermally reversible by heating and cooling. The viscoelastic properties of supramolecular gels in strain and frequency sweets were enhanced by increasing the concentration of a mixed 1 and 2. Furthermore, the supramolecular gels displayed a thixotropic effect, indicating a thermally reversible gel. Full article
(This article belongs to the Special Issue Advances in Supramolecular Polymer Gels)
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13 pages, 4126 KiB  
Article
White-Light-Emitting Supramolecular Polymer Gel Based on β-CD and NDI Host-Guest Inclusion Complex
by Srayoshi Roy Chowdhury, Sujay Kumar Nandi, Sahabaj Mondal, Santosh Kumar and Debasish Haldar
Polymers 2021, 13(16), 2762; https://doi.org/10.3390/polym13162762 - 17 Aug 2021
Cited by 4 | Viewed by 2425
Abstract
Supramolecular polymer formed by non-covalent interactions between complementary building blocks entraps solvents and develops supramolecular polymer gel. A supramolecular polymer gel was prepared by the heating-cooling cycle of β-cyclodextrin (β-CD) and naphthalenedimide (NDI) solution in N,N-dimethylformamide (DMF). The host-guest inclusion [...] Read more.
Supramolecular polymer formed by non-covalent interactions between complementary building blocks entraps solvents and develops supramolecular polymer gel. A supramolecular polymer gel was prepared by the heating-cooling cycle of β-cyclodextrin (β-CD) and naphthalenedimide (NDI) solution in N,N-dimethylformamide (DMF). The host-guest inclusion complex of β-CD and NDI 1 containing dodecyl amine forms the supramolecular polymer and gel in DMF. However, β-CD and NDI 2, having glutamic acid, fail to form the supramolecular polymer and gel under the same condition. X-ray crystallography shows that the alkyl chains of NDI 1 are complementary to the hydrophobic cavity of the two β-CD units. From rheology, the storage modulus was approximately 1.5 orders of magnitude larger than the loss modulus, which indicates the physical crosslink and elastic nature of the thermo-responsive gel. FE-SEM images of the supramolecular polymer gel exhibit flake-like morphology and a dense flake network. The flakes developed from the assembly of smaller rods. Photophysical studies show that the host-guest complex formation and gelation have significantly enhanced emission intensity with a new hump at 550 nm. Upon excitation by a 366 nm UV-light, NDI 1 and β-CD gel in DMF shows white light emission. The gel has the potential for the fabrication of organic electronic devices. Full article
(This article belongs to the Special Issue Advances in Supramolecular Polymer Gels)
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