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Hyperbranched Macromolecular Architectures: From Design to Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Polymeric Materials".

Deadline for manuscript submissions: 10 August 2024 | Viewed by 899

Special Issue Editor

Electroactive Polymers and Plasmochemistry Laboratory, Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, 700487 Iasi, Romania
Interests: linear and hyperbranched heteroaromatic macromolecular architectures; classic and/or Suzuki polycondensation; polymer processing (thin films and coatings); optical and electronic properties of polymers; application-driven polymeric materials for organic electronics and high-performance applications
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Special Issue Information

Dear Colleagues,

The last three decades of intense research in the field of hyperbranched polymers rendered an innovative, “topological” course in the development of various macromolecular architectures and enabled an exponential evolution towards increasingly complex structures with highly diverse, intricate functional roles.

The crafty combination of polymeric concepts and synthetic strategies unlocked an impressive degree of control over hyperbranched macromolecules and added solid arguments for the commercialization of some of them. The applicative potential of such materials increased from the relatively narrow fields of coatings, resins, and adhesives to the broader areas of nanotechnology, hybrid materials, light-emitting devices, membranes, drug delivery, and supramolecular chemistry. While it may be considered too early to be labeled as mature, the interdisciplinary topic of hyperbranched polymers is highly active and expanding, and offers a plethora of possibilities for tuning the features of materials and even delivering new properties by tailoring the shape of macromolecular architectures. 

Nevertheless, this type of construct still represents a scientific challenge due to the extensive structural broadness, innate complexity, and multitude of approaches used to develop them. A large number of research groups worldwide are working to (i) tackle fundamental questions and address key challenges in the field, (ii) implement new chemical tools borrowed from modern organic chemistry, (iii) control the branching degree and subsequent properties, (iv) compute structures and profile properties, and (v) pursue new applications.

Therefore, this Special Issue of Materials is dedicated to the field of hyperbranched macromolecular architectures and intends to collect original, high-quality research covering state-of-the-art topics in this broad area of research.

It is our pleasure to invite you to contribute full papers, communications, and reviews dealing with innovations, challenges, and perspectives concerning the design, preparation, structure-property insights, and applications of hyperbranched macromolecules and materials based on them.

Dr. Radu-Dan Rusu
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. Materials 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 2600 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

  • hyperbranched polymers
  • macromolecular architectures
  • macromolecular design and synthesis
  • polymer applications
  • topology of macromolecules

Published Papers (1 paper)

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Research

13 pages, 4191 KiB  
Article
Thermal Transitions and Structural Characteristics of Poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) Polypseudorotaxane and Polyrotaxane Thin Films
by Barbara Hajduk, Paweł Jarka, Henryk Bednarski, Henryk Janeczek, Pallavi Kumari and Aurica Farcas
Materials 2024, 17(6), 1318; https://doi.org/10.3390/ma17061318 - 13 Mar 2024
Viewed by 735
Abstract
Herein, we report the thermal transitions and structural properties of poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudopolyrotaxane (PEDOT∙CB7-PS) and polyrotaxane (PEDOT∙CB7-PR) thin films compared with those of pristine PEDOT. The structural characteristics were investigated by using variable-temperature spectroscopic ellipsometry (VTSE), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and [...] Read more.
Herein, we report the thermal transitions and structural properties of poly(3,4-ethylenedioxythiophene/cucurbit[7]uril) pseudopolyrotaxane (PEDOT∙CB7-PS) and polyrotaxane (PEDOT∙CB7-PR) thin films compared with those of pristine PEDOT. The structural characteristics were investigated by using variable-temperature spectroscopic ellipsometry (VTSE), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and atomic force microscopy (AFM). VTSE and DSC results indicated the presence of an endothermic process and glass transition in the PEDOT∙CB7-PS and PEDOT∙CB7-PR thin films. X-ray diffraction of PEDOT∙CB7-PS and PEDOT∙CB7-PR powders displayed the presence of interchain π-π stacking revealing a characteristic arrangement of aromatic rings in the internal structure of the crystallites. AFM imaging of PEDOT∙CB7-PS and PEDOT∙CB7-PR thin films exhibited significant differences in the surface topographies compared with those of PEDOT. A high degree of crystallization was clearly visible on the surface of the PEDOT layer, whereas the PEDOT∙CB7-PS and PEDOT∙CB7-PR thin films exhibited more favorable surface parameters. Such significant differences identified in the surface morphology of the investigated layers can, therefore, be clearly associated with the presence of surrounding CB7 on PEDOT skeletons. Full article
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