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Functional Crystal Materials: Challenges and Opportunities

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

Deadline for manuscript submissions: 30 November 2025 | Viewed by 1796

Special Issue Editor

Tianjin Key Laboratory of Brine Chemical Engineering and Ecological Utilization of Resources, Tianjin Engineering Center of Marine Chemical Engineering & Technology, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
Interests: crystallization thermodynamics; crystallization kinetics, involved nucleation, and crystal growth kinetics; functional crystal materials; self-assembly materials; chiral separation (typically by using crystallization technology); brine chemical engineering and the ecological utilization of resources; crystal engineering (polymorphism, co-crystal, salt, solvates); separation and purification technology
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Special Issue Information

Dear Colleagues,

Functional crystal materials currently play a crucial role in multidisciplinary fields such as chemistry, materials science, crystal engineering, pharmaceutical science, environmental science, and earth science.

Further discussions regarding the design of multifunctional crystal structures and materials based on structure–property relationships have already resulted in significant advances in all directions of science and technology, and will undoubtedly lead to further insights and new horizons concerning the directional design of multifunctional crystal materials from a molecular perspective. Therefore, we encourage scientists to submit papers presenting studies devoted to the directional design of multifunctional crystal materials based on crystal engineering at the molecular scale and mesoscale level. The scope of this Special Issue includes, but is not limited to, the following topics:

  1. Experimental, theoretical, or combined perspective views on crystal engineering and molecular simulation in organic, inorganic and physical chemistry.
  2. Prediction, screening and precise preparation of polymorphisms, co-crystals, solvates and salts based on the crystal engineering strategy.
  3. Development design strategy for functionalized nanocrystalline materials, multi-stimulus-responsive crystals, optical crystal materials, energy storage crystal materials, energetic crystal materials.
  4. Physical interpretations and molecular insights into the molecular self-assembly process.
  5. Application of artificial intelligence in crystal engineering and crystal material development.

We sincerely invite scientists working in a range of experimental and theoretical fields to contribute their work to this Special Issue in order to provide a deeper insight into the structure–property relationships in multi-functional crystal materials and the molecular self-assembly process.

Dr. Shijie Xu
Guest Editor

Manuscript Submission Information

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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

  • functional crystal materials
  • crystal engineering
  • structure-property relationship
  • multi stimulus responsive crystals
  • artificial intelligence
  • molecular self-assembly
  • meso-scale

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Published Papers (1 paper)

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Research

13 pages, 6654 KiB  
Article
Solvates and Polymorphs of Axitinib: Characterization and Phase Transformation
by Yinhu Pan, Tong Xiao, Yan Wang, Zhiying Pan, Shichao Du and Fumin Xue
Molecules 2024, 29(19), 4696; https://doi.org/10.3390/molecules29194696 - 4 Oct 2024
Cited by 1 | Viewed by 1429
Abstract
Axitinib (AXTN) is an oral tyrosine kinase inhibitor for the treatment of early to advanced renal cell carcinoma. In this work, solvates of AXTN were prepared in five solvents and subjected to desolvation treatment. The crystal form A of AXTN can form solvates [...] Read more.
Axitinib (AXTN) is an oral tyrosine kinase inhibitor for the treatment of early to advanced renal cell carcinoma. In this work, solvates of AXTN were prepared in five solvents and subjected to desolvation treatment. The crystal form A of AXTN can form solvates in acetonitrile, DMF, acetic acid, acetic acid + water, and methanol. Different ratios of AXTN and acetic acid will form different products (solvate or directly crystallized into another crystal form (form IV)). The characterization results of thermal analyses confirmed the types of the five solvates. The obtained solvates were desolvated using methods of solid-phase desolvation (heating, exposure to solvent steam, microwave) and solvent-mediated phase transformation (SMPT). The desolvated solids were characterized by PXRD, TGA, DSC, FT-IR, and SEM, and it was ultimately inferred that a new crystal form (form Z) of AXTN could be formed after desolvation. In addition, the solvates obtained in this work experienced mutual transformation via SMPT, which depends on the type of solvents or mixed solvents. The phase transformations of different solid forms were summarized. This study is instructive for exploring solvates and polymorphs of AXTN and understanding phase transitions under different environments. Full article
(This article belongs to the Special Issue Functional Crystal Materials: Challenges and Opportunities)
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