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Polymers
Special Issues
Supramolecular Chemistry and Self-Assembly
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Supramolecular Chemistry and Self-Assembly

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

Deadline for manuscript submissions: closed (31 July 2020) | Viewed by 9655

Special Issue Editor

Prof. Dr. Yeo-Wan Chiang

E-Mail Website
Guest Editor
Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
Interests: block copolymer photonic crystals; self-assembly of block copolymers and supramolecules; polymer crystallization in nanoscale; nanomaterials via templating synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Supramolecular chemistry and self-assembly have drawn much attention due to the advantages of infinite possibilities of molecular design, ease of functionalization, high flexibility, large scalability, wide tunability, cost-effective property, high compatibility with patterning processes, light weight, etc. Unique materials by supramolecular chemistry and self-assembly could, therefore, exhibit specific physical and chemical properties superior to the current ones, presenting a high potential in the state-of-the-art and advanced applications of energy, sensing, optoelectronics, drug delivery, and catalysis. This specific Special Issue will embody the innovative research articles containing theory, simulation, experiment, and application fields. With the integration of these investigations into this Special Issue, this may rapidly provide the understanding for readers and researchers who are interested in the recent research progress of the filed, further inspiring brainstorm and derivative inventive power for investigators. Articles associated with the emerging fields, including molecular level design of supramolecules, hierarchical organizations in different length scales through noncovalent interactions, and the specific stimulus-responsive functions and the corresponding material properties are welcome.

Prof. Yeo-Wan Chiang
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 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

  • self-assembly
  • supramolecular chemistry
  • hierarchical structures
  • noncovalent interactions
  • stimulus responsive materials
  • energy conversation and storage
  • macromolecules
  • porous materials
  • photonic crystals
  • optoelectronic applications
  • catalysis
  • polymers

Published Papers (3 papers)

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Research

18 pages, 7936 KiB  
Article
pH-Responsive Polyketone/5,10,15,20-Tetrakis-(Sulfonatophenyl)Porphyrin Supramolecular Submicron Colloidal Structures
by Esteban Araya-Hermosilla, Ignacio Moreno-Villoslada, Rodrigo Araya-Hermosilla, Mario E. Flores, Patrizio Raffa, Tarita Biver, Andrea Pucci, Francesco Picchioni and Virgilio Mattoli
Polymers 2020, 12(9), 2017; https://doi.org/10.3390/polym12092017 - 3 Sep 2020
Cited by 4 | Viewed by 3554
Abstract
In this work, we prepared color-changing colloids by using the electrostatic self-assembly approach. The supramolecular structures are composed of a pH-responsive polymeric surfactant and the water-soluble porphyrin 5,10,15,20-tetrakis-(sulfonatophenyl)porphyrin (TPPS). The pH-responsive surfactant polymer was achieved by the chemical modification of an alternating aliphatic [...] Read more.
In this work, we prepared color-changing colloids by using the electrostatic self-assembly approach. The supramolecular structures are composed of a pH-responsive polymeric surfactant and the water-soluble porphyrin 5,10,15,20-tetrakis-(sulfonatophenyl)porphyrin (TPPS). The pH-responsive surfactant polymer was achieved by the chemical modification of an alternating aliphatic polyketone (PK) via the Paal–Knorr reaction with N-(2-hydroxyethyl)ethylenediamine (HEDA). The resulting polymer/dye supramolecular systems form colloids at the submicron level displaying negative zeta potential at neutral and basic pH, and, at acidic pH, flocculation is observed. Remarkably, the colloids showed a gradual color change from green to pinky-red due to the protonation/deprotonation process of TPPS from pH 2 to pH 12, revealing different aggregation behavior. Full article
(This article belongs to the Special Issue Supramolecular Chemistry and Self-Assembly)
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17 pages, 962 KiB  
Article
Accelerated Reaction Rates within Self-Assembled Polymer Nanoreactors with Tunable Hydrophobic Microenvironments
by Andrew Harrison, Michael P. Zeevi, Christopher L. Vasey, Matthew D. Nguyen and Christina Tang
Polymers 2020, 12(8), 1774; https://doi.org/10.3390/polym12081774 - 7 Aug 2020
Cited by 6 | Viewed by 2906
Abstract
Performing reactions in the presence of self-assembled hierarchical structures of amphiphilic macromolecules can accelerate reactions while using water as the bulk solvent due to the hydrophobic effect. We leveraged non-covalent interactions to self-assemble filled-polymer micelle nanoreactors (NR) incorporating gold nanoparticle catalysts into various [...] Read more.
Performing reactions in the presence of self-assembled hierarchical structures of amphiphilic macromolecules can accelerate reactions while using water as the bulk solvent due to the hydrophobic effect. We leveraged non-covalent interactions to self-assemble filled-polymer micelle nanoreactors (NR) incorporating gold nanoparticle catalysts into various amphiphilic polymer nanostructures with comparable hydrodynamic nanoreactor size and gold concentration in the nanoreactor dispersion. We systematically studied the effect of the hydrophobic co-precipitant on self-assembly and catalytic performance. We observed that co-precipitants that interact with gold are beneficial for improving incorporation efficiency of the gold nanoparticles into the nanocomposite nanoreactor during self-assembly but decrease catalytic performance. Hierarchical assemblies with co-precipitants that leverage noncovalent interactions could enhance catalytic performance. For the co-precipitants that do not interact strongly with gold, the catalytic performance was strongly affected by the hydrophobic microenvironment of the co-precipitant. Specifically, the apparent reaction rate per surface area using castor oil (CO) was over 8-fold greater than polystyrene (750 g/mol, PS 750); the turnover frequency was higher than previously reported self-assembled polymer systems. The increase in apparent catalytic performance could be attributed to differences in reactant solubility rather than differences in mass transfer or intrinsic kinetics; higher reactant solubility enhances apparent reaction rates. Full conversion of 4-nitrophenol was achieved within three minutes for at least 10 sequential reactions demonstrating that the nanoreactors could be used for multiple reactions. Full article
(This article belongs to the Special Issue Supramolecular Chemistry and Self-Assembly)
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19 pages, 3896 KiB  
Article
Crystallization Induced Enhanced Emission in Two New Zn(II) and Cd(II) Supramolecular Coordination Complexes with the 1-(3,4-Dimethylphenyl)-5-Methyl-1H-1,2,3-Triazole-4-Carboxylate Ligand
by Pilar Narea, Jonathan Cisterna, Alejandro Cárdenas, Pilar Amo-Ochoa, Félix Zamora, Clàudia Climent, Pere Alemany, Sergio Conejeros, Jaime Llanos and Iván Brito
Polymers 2020, 12(8), 1756; https://doi.org/10.3390/polym12081756 - 6 Aug 2020
Cited by 7 | Viewed by 2661
Abstract
Two new d10 metal supramolecular metal–organic frameworks (SMOFs) with general formula [ML2(H2O)2]n (M = Zn, Cd) have been synthetized using the sodium salt of the anionic 1-(3,4-dimethylphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate ligand (Na+L−). Both SMOFs [...] Read more.
Two new d10 metal supramolecular metal–organic frameworks (SMOFs) with general formula [ML2(H2O)2]n (M = Zn, Cd) have been synthetized using the sodium salt of the anionic 1-(3,4-dimethylphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate ligand (Na+L−). Both SMOFs have been structurally characterized by single-crystal X-ray diffraction analysis and IR spectroscopy. The compounds are isostructural and form supramolecular aggregates via hydrogen bonds with the presence of less common dihydrogen bonds. Interestingly, they show ionic conductivity and porosity. The luminescent properties have been also studied by means of the excitation and emission spectra. Periodic DFT and molecular TD-DFT calculations have been used to unravel the emergence of luminescence in the otherwise non-emitting 1-(3,4-dimethylphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate ligand once incorporated in the SMOFs. Our results also illustrate the importance of considering the dielectric environment in the crystal when performing excited state calculations for isolated fragments to capture the correct electronic character of the low-lying states, a practice which is not commonly adopted in the community. Full article
(This article belongs to the Special Issue Supramolecular Chemistry and Self-Assembly)
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