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Crystals
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Advanced Research on Macromolecular Crystals (2nd Edition)
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Advanced Research on Macromolecular Crystals (2nd Edition)

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

Deadline for manuscript submissions: closed (23 December 2024) | Viewed by 9246

Special Issue Editors

Prof. Dr. Eamor M. Woo

E-Mail Website
Guest Editor
Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701-01, Taiwan
Interests: polymer crystallization and morphology; self-assembly; photonic crystals; biodegradable polymers; nanocomposites
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jesús Sanmartín-Matalobos

E-Mail Website
Guest Editor
Inorganic Chemistry Department, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
Interests: supramolecular chemistry; coordination chemistry; single crystal X-ray crystallography; H-bonding; chirality; fluorescence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The new Special Issue of Crystals, Advanced Research on Macromolecular Crystals (Volume II), continues the previous Issue (https://www.mdpi.com/journal/crystals/special_issues/featured_topics) and provides a forum to report advancements in subjects of macromolecular crystals related to the synthesis, nucleation, growth, processing, self-assembly structures, properties and applications of all classes of synthetic macromolecules and polymers, or large macromolecules.

The aim of this Special Issue on “Advanced Research on Macromolecular Crystals” is to make known relevant works to our colleagues in the field of macromolecular crystals. The new Special Issue will be guest-edited by Jesús Sanmartín-Matalobos and Eamor M. Woo, who are inviting prominent scientists in the field to submit original research articles, review articles, and short communications focused on the abovementioned subjects of polymeric and macromolecular crystalline materials.

The coverage of topics for this Special Issue is as broad as that of macromolecular crystals, ranging from the synthesis, nucleation, growth, processing, and characterization of macromolecular crystalline materials to the mechanical, chemical, electrical, magnetic, catalytic, optical, and self-assembly properties, as well as their diverse applications. Among many other subject areas, the topic of macromolecular crystals includes plastics, synthetic fibres, synthetic rubbers, graphene carbon nanotubes, supramolecular polymers, polymer composites, metal–organic frameworks (MOFs) and polymer–MOF hybrid materials, and liquid-crystalline polymers.

We look forward to your valued contributions to make this Special Issue a reference resource of featured knowledge for future researchers in the field of macromolecular crystals.

Prof. Dr. Eamor M. Woo
Prof. Dr. Jesús Sanmartín-Matalobos
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. 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 2100 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

  • plastics
  • synthetic fibers
  • synthetic rubber
  • hybrid polymeric materials
  • eutectic molecular liquids
  • graphene carbon nanotubes
  • polymer composites
  • metal coordination polymers
  • metal–organic frameworks
  • macrocycles and macrocyclic metal complexes

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

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15 pages, 14149 KiB  
Article
Thermal Behavior, Local-Scale Morphology, and Phase Composition of Spherulites in Melt-Crystallized Poly(Vinylidene Fluoride) Films
by Denis V. Anokhin, Dana S. Plieva, Martin Rosenthal, Andrei V. Churakov and Dimitri A. Ivanov
Crystals 2025, 15(1), 94; https://doi.org/10.3390/cryst15010094 - 20 Jan 2025
Viewed by 804
Abstract
Synchrotron microbeam X-ray diffraction was employed to investigate the local-scale structure and solid-state phase transformation within individual spherulites of poly(vinylidene fluoride) (PVDF). In thin, non-oriented films, PVDF crystallizes into α and γ-phases, forming distinct spherulitic morphologies: large, banded α-spherulites and smaller, irregular “mixed” [...] Read more.
Synchrotron microbeam X-ray diffraction was employed to investigate the local-scale structure and solid-state phase transformation within individual spherulites of poly(vinylidene fluoride) (PVDF). In thin, non-oriented films, PVDF crystallizes into α and γ-phases, forming distinct spherulitic morphologies: large, banded α-spherulites and smaller, irregular “mixed” spherulites dominated by the γ-phase. For samples crystallized at high undercooling (160 °C), the mixed spherulites primarily consisted of the γ-phase, with only a minor fraction of α-lamellae localized at the spherulite boundaries. At higher crystallization temperatures (165 °C), the α-phase was entirely absent from the mixed spherulites. High-temperature annealing induced a phase transformation from the α-phase to the γ-phase, initiating at the interface between α- and γ-spherulites. The transformation propagated radially along the b-axis of the α-spherulite, while its characteristic banded morphology remained intact. Radial scanning with an X-ray microbeam provided spatially resolved mapping of the structural transition within the α-spherulite at the micrometer scale, offering detailed insights into the transformation mechanism and its impact on the spherulitic structure. The fast crystal growth direction remained unaltered during the transition, suggesting minimal material transport and maintaining structural coherence. Full article
(This article belongs to the Special Issue Advanced Research on Macromolecular Crystals (2nd Edition))
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13 pages, 10253 KiB  
Article
Application of Serial Crystallography for Merging Incomplete Macromolecular Crystallography Datasets
by Ki Hyun Nam
Crystals 2024, 14(12), 1012; https://doi.org/10.3390/cryst14121012 - 22 Nov 2024
Cited by 1 | Viewed by 830
Abstract
In macromolecular crystallography (MX), a complete diffraction dataset is essential for determining the three-dimensional structure. However, collecting a complete experimental dataset using a single crystal is frequently unsuccessful due to poor crystal quality or radiation damage, resulting in the collection of multiple incomplete [...] Read more.
In macromolecular crystallography (MX), a complete diffraction dataset is essential for determining the three-dimensional structure. However, collecting a complete experimental dataset using a single crystal is frequently unsuccessful due to poor crystal quality or radiation damage, resulting in the collection of multiple incomplete datasets. This issue can be solved by merging incomplete diffraction datasets to generate a complete dataset. This study introduced a new approach for merging incomplete datasets from MX to generate a complete dataset using serial crystallography (SX). Six incomplete diffraction datasets of β-glucosidase from Thermoanaerobacterium saccharolyticum (TsaBgl) were processed using CrystFEL, an SX program. The statistics of the merged data, such as completeness, CC, CC*, Rsplit, Rwork, and Rfree, demonstrated a complete dataset, indicating improved quality compared with the incomplete datasets and enabling structural determination. Also, the merging of the incomplete datasets was processed using four different indexing algorithms, and their statistics were compared. In conclusion, this approach for generating a complete dataset using SX will provide a new opportunity for determining the crystal structure of macromolecules using multiple incomplete MX datasets. Full article
(This article belongs to the Special Issue Advanced Research on Macromolecular Crystals (2nd Edition))
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Review

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31 pages, 9156 KiB  
Review
Review on Crystallization Strategies for Polymer Single Crystals
by Tianyu Wu, Jun Xu and Haimu Ye
Crystals 2024, 14(3), 207; https://doi.org/10.3390/cryst14030207 - 22 Feb 2024
Cited by 4 | Viewed by 7015
Abstract
Polymer physics has evolved significantly over the past century, transitioning from the early recognition of the chain structure of polymers to a mature field integrating principles from statistical mechanics, thermodynamics, and condensed matter physics. As an important part of polymer physics, polymer single [...] Read more.
Polymer physics has evolved significantly over the past century, transitioning from the early recognition of the chain structure of polymers to a mature field integrating principles from statistical mechanics, thermodynamics, and condensed matter physics. As an important part of polymer physics, polymer single crystals are crucial for understanding molecular structures and behaviors, enhancing material properties, and enabling precise functionalization. They offer insights into polymer crystallization kinetics, serve as templates for nanofabrication, and have applications in electronics, sensors, and biomedical fields. However, due to the complexity of molecular chain movement, the formation of polymer single crystals is still very difficult. Over the decades, numerous researchers have dedicated themselves to unraveling the mysteries of polymer single crystals, yielding substantial findings. This paper focus on the historical evolution and advancements in polymer single crystal research, aiming to offer valuable insights and assistance to fellow researchers in this field. Full article
(This article belongs to the Special Issue Advanced Research on Macromolecular Crystals (2nd Edition))
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