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Molecules publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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New Insights into Biomass Catalytic Conversion submission deadline 31 Mar 2026 | Viewed by 84 | Submission Open
Keywords: biomass conversion; catalyst development; mechanistic insights; green chemistry; biorefinery
(This special issue belongs to the Section Green Chemistry)
Extraction and Adsorption of Chemicals from Wastewater
edited by Peng Liu, and
submission deadline 31 Mar 2026 | Viewed by 79 | Submission Open
Keywords: environmental depollution; adsorption processes; catalytic decontamination; porous and layered materials; characterization methods; adsorption removal
(This special issue belongs to the Section Green Chemistry)
Advances in Extraction, Characterization and Application of High-Value Compounds submission deadline 31 Mar 2026 | Viewed by 78 | Submission Open
Keywords: bioactive compounds; green extraction techniques; optimization parameters; by-product valorization; health-promoting properties
(This special issue belongs to the Section Natural Products Chemistry)
Covalent and Noncovalent Interactions in Crystal Chemistry, 3rd Edition
edited by and
submission deadline 31 Mar 2026 | Viewed by 72 | Submission Open
Keywords: covalent and noncovalent interactions; crystal chemistry; molecular recognition and assembly; crystal structure; crystal engineering
(This special issue belongs to the Section Molecular Structure)
Interaction Between Biomacromolecules and Dietary Antioxidants—Characterisation and Physiological Significance submission deadline 31 Mar 2026 | Viewed by 70 | Submission Open
Keywords: protein– ligand interaction; food matrix; dietary antioxidants; spectroscopic methods; molecular docking; cell culture
(This special issue belongs to the Section Chemical Biology)
Biosynthesis, Structural Elucidation, and Pharmaceutical Applications of Alkaloids
edited by
submission deadline 31 Mar 2026 | Viewed by 70 | Submission Open
Keywords: alkaloids; nitrogen-containing compounds; therapeutic agents; natural products; structure– activity relationships; biosynthesis; chemical synthesis; isolation
(This special issue belongs to the Section Natural Products Chemistry)
Advances in Analytical Strategies to Study Cultural Heritage Samples, 3rd Edition submission deadline 31 Mar 2026 | Viewed by 67 | Submission Open
Keywords: sample preparation; trace elements; multielement analysis; spectrometric techniques; organic compounds; authenticity; chemical characterization; biological remains; pigments
(This special issue belongs to the Section Analytical Chemistry)
Advanced Materials and Technologies for Wastewater Treatment—2nd Edition submission deadline 31 Mar 2026 | Viewed by 67 | Submission Open
Keywords: photocatalysis; membrane filtration; ion exchange; biological degradation; nanomaterials; carbon materials; metal oxides; titanium dioxide; water purification; waste water treatment; photodegradation; reaction mechanism
(This special issue belongs to the Section Green Chemistry)
Advances in European Electrochemistry submission deadline 31 Mar 2026 | Viewed by 65 | Submission Open
Keywords: electrode processes; “ cap-pair” effect; electrodes; electrode materials modifications; (bio)electroanalytical applications; double layer interface; adsorption; electrocatalysis; supercapacitor; batteries; fuel cell; voltammetry; electrochemical impedance spectroscopy
(This special issue belongs to the Section Electrochemistry)
Cyclodextrin Polymers for Environmental Applications submission deadline 31 Mar 2026 | Viewed by 64 | Submission Open
Keywords: cyclodextrins; cyclodextrin derivatives; hydrogels; membranes; nanosponges; environmental remediation; agriculture; sustainability
(This special issue belongs to the Section Materials Chemistry)
Green Extraction, Characterization, and Biological Potential of Natural Phytochemicals
edited by Gustavo Castillo-Herrera
submission deadline 31 Mar 2026 | Viewed by 64 | Submission Open
Keywords: green extraction; chemical characterization; phytochemicals; bioactivity
(This special issue belongs to the Section Natural Products Chemistry)
Stimuli-Responsive Molecular Crystals: From Structure to Function
edited by
submission deadline 31 Mar 2026 | Viewed by 58 | Submission Open
Keywords: stimuli-responsive molecular crystals; thermosalient and photosalient effects; supramolecular chemistry and crystal engineering; molecular design and polymorphism; anisotropic thermal expansion and molecular packing effects; solid-state phase transitions; crystallography under external stimuli; structure– property relationships in molecular solids; computational chemistry of molecular crystals
(This special issue belongs to the Section Materials Chemistry)
Biodegradable Polymers in Asia
edited by
submission deadline 31 Mar 2026 | Viewed by 56 | Submission Open
Keywords: biodegradable polymers; performance optimization; applications
(This special issue belongs to the Section Macromolecular Chemistry)
Novel Functional Nanomaterials for Energy, Environmental and Sensing Applications
edited by , Ming Li and Miao Cheng
submission deadline 31 Mar 2026 | Viewed by 53 | Submission Open
Keywords: gas sensor and device; fluorescence probe; environmental catalysis; environmental monitoring; hydrogen production and safety; energy storage materials
(This special issue belongs to the Section Materials Chemistry)
Advanced Flexible Sensing Materials: Design, Mechanisms, and Applications
edited by Tianxue Zhu and Lifang Liu
submission deadline 31 Mar 2026 | Viewed by 50 | Submission Open
Keywords: flexible sensing materials; polymer- and hydrogel-based sensing materials; nanocomposites for flexible sensors; stretchable and self-healing materials; scalable fabrication of flexible sensing materials; wearable and implantable devices; durability and environmental stability of sensing materials
(This special issue belongs to the Section Materials Chemistry)
Understanding the Structure and Properties of Adaptable Solvents via Computational Methods and Their Application
edited by Richard P. Matthews
submission deadline 31 Mar 2026 | Viewed by 45 | Submission Open
Keywords: solvent design; ionic liquids; deep eutectic solvents; density functional theory (DFT); non-covalent interactions; structure– property relationships
(This special issue belongs to the Section Computational and Theoretical Chemistry)
Synergistic Effect in Nanomaterials for Electrocatalytic Hydrogen and Oxygen Conversion
edited by
submission deadline 31 Mar 2026 | Viewed by 44 | Submission Open
Keywords: electrocatalysis; fuel cell catalysts; electrochemical carbon dioxide reduction; hydrogen evolution reaction; oxygen evolution reaction; water splitting
(This special issue belongs to the Section Electrochemistry)
Advancements in Electrochemistry and Corrosion Protection
edited by Houyi Ma
submission deadline 31 Mar 2026 | Viewed by 44 | Submission Open
Keywords: corrosion electrochemistry; materials degradation; corrosion protection; chemical conversion layers; coatings; inhibitors; electrode corrosion
(This special issue belongs to the Section Electrochemistry)
Liquid Crystals, 3rd Edition submission deadline 1 Apr 2026 | 1 articles | Viewed by 468 | Submission Open
Keywords: liquid crystals; ionic liquid crystals; metallomesogens; nanoparticles; liquid crystal composites; polymer liquid crystals; lyotropic liquid crystals
(This special issue belongs to the Section Materials Chemistry)
Study of Quadruplex Nucleic Acids and Beyond
edited by
submission deadline 1 Apr 2026 | Viewed by 249 | Submission Open
Keywords: G-quadruplexes (G4s); i-Motifs; Z-DNA/RNA; triplex DNA; cruciforms; hairpins; chemical probes; nanomaterials; biosensors
Expanding Natural Product Collections: From Diverse Biological and Food Sources to Innovative Structures submission deadline 1 Apr 2026 | Viewed by 191 | Submission Open
Keywords: natural product collections; targeted and untargeted metabolomics; synthetic and semi-synthetic derivatives; bioassay-guided isolation; structure elucidation; cheminformatics in natural product research; natural product-inspired drug and nutraceutical discovery; food and medicinal plant chemistry
(This special issue belongs to the Section Natural Products Chemistry)
Chemical Compounds or Agents Against Parasites, Bacteria, and Neglected Tropical Diseases
edited by
submission deadline 1 Apr 2026 | Viewed by 135 | Submission Open
Keywords: chemical compounds; resistance; NTDs; targets
(This special issue belongs to the Section Medicinal Chemistry)
Non-Thermal Processing Technologies in Food Science: From Stabilization to Bioactive Analysis submission deadline 1 Apr 2026 | Viewed by 91 | Submission Open
Keywords: non-thermal processing; food stabilization; bioactive compounds; high-pressure processing; pulsed electric fields; cold plasma
(This special issue belongs to the Section Food Chemistry)
Chemical Composition and Bioactivities of Essential Oils, 3rd Edition submission deadline 10 Apr 2026 | 7 articles | Viewed by 7767 | Submission Open
Keywords: bioactive natural compounds; essential oils; chemical characterization; the essential oil mechanism of action; biological activities in vitro and in vivo; antitumor; antimicrobials; antioxidant; EO delivery strategies
(This special issue belongs to the Section Natural Products Chemistry)
Challenges in Green Analytical Chemistry submission deadline 10 Apr 2026 | Viewed by 279 | Submission Open
Keywords: green analytical chemistry; sustainable analytical methods; eco-friendly sample preparation; miniaturized techniques; solvent reduction; greenness assessment tools; waste minimization; renewable analytical materials; energy-efficient analysis; green metrics in chemistry
Design, Synthesis, and Biological Evaluation of Novel Anti-Tuberculosis Drugs
edited by
submission deadline 15 Apr 2026 | Viewed by 78 | Submission Open
Keywords: anti-tubercular agents; drug design; drug repurposing; medicinal chemistry; structure– activity relationship (SAR); Mycobacterium tuberculosis; synthesis; minimum inhibitory concentration (MIC); cytotoxicity
(This special issue belongs to the Section Medicinal Chemistry)
Novel Graphene Materials: Synthesis, Characterization and Applications
edited by Stefano Veronesi and
submission deadline 15 Apr 2026 | Viewed by 62 | Submission Open
Keywords: graphene; epitaxial graphene; 2D materials; energy storage; catalysis; hydrogen storage
(This special issue belongs to the Section Materials Chemistry)
Catalysis in Organic Chemistry: A Themed Issue Dedicated to Professor Johannes G. de Vries
edited by Sergey Tin
submission deadline 16 Apr 2026 | Viewed by 124 | Submission Open
Keywords: homogeneous catalysis; enantioselective catalysis; transformation of renewable resources; industrial catalysis
(This special issue belongs to the Section Organic Chemistry)
Application of Bioenzyme Engineering and Enzyme Catalysis in the Food Industry
edited by , Ivan Kurtovic and
submission deadline 28 Apr 2026 | 1 articles | Viewed by 285 | Submission Open
Keywords: enzyme; biotechnology; biocatalysis; metabolic engineering; food-grade supports; protein modification; protein design
Bio-Based Polymers for Sustainable Future
edited by
submission deadline 30 Apr 2026 | 9 articles | Viewed by 13959 | Submission Open
Keywords: bio-based polymers; bio-based composites; bio-based textiles; bio-based polymers for 3D printing; bio-based packaging; functional bio-based polymers; recyclability and biodegradation of bio-based polymers; LCA of bio-based polymers; application of bio-based polymers
(This special issue belongs to the Section Materials Chemistry)
Bioactive Compounds from Roots, Stems, Leaves, Flowers, Fruits, and Seeds: 2nd Edition submission deadline 30 Apr 2026 | 8 articles | Viewed by 13583 | Submission Open
Keywords: bioactive compounds; roots; stems; leaves; flowers; fruits; and seeds; natural products; natural medicine; medicinal plants
(This special issue belongs to the Section Natural Products Chemistry)
Advances in Coordination Chemistry, 3rd Edition
edited by Juan Niclós-Gutiérrez and
submission deadline 30 Apr 2026 | 7 articles | Viewed by 12197 | Submission Open
Keywords: synthesis strategies for novel coordination compounds; coordination compounds with tailor-made ligands for specific applications; coordination compounds with multitopic ligands; single-crystal XRD structures and dimensionality of metal complexes; metal– organic frameworks and their applications; molecular recognition in mixed ligand– metal complexes at the molecular and/or supra-molecular levels; model metal complexes from the bioinorganic frontier of biological chemistry; DFT and other theoretical approaches for inter-ligand interactions in metal complexes
(This special issue belongs to the Section Inorganic Chemistry)
Synthesis, Characterization and Application of Polymer-Based Materials, 2nd Edition submission deadline 30 Apr 2026 | 10 articles | Viewed by 12095 | Submission Open
Keywords: synthetic; natural; and sustainable polymer-based materials; polymer composites; polymer hybrids; multifunctional and smart polymer materials; structure– properties relationship in polymer systems; advanced characterization of polymer multiphase systems; polymer synthesis and reactive processing; polymer-based supports for bioactive molecules; applications of polymer-based materials; hydrophilic polymer systems
(This special issue belongs to the Section Materials Chemistry)
Recent Advances in Chromatography for Pharmaceutical Analysis
edited by
submission deadline 30 Apr 2026 | 8 articles | Viewed by 12021 | Submission Open
Keywords: drug analysis of chemical and biological drugs; bioanalysis; natural products analysis; green chemistry; experimental design; artificial intelligence; metabolomics; stationary phase
(This special issue belongs to the Section Analytical Chemistry)
Exploring the Natural Antioxidants in Foods
edited by Ewa Piątkowska, Mariola Drozdowska and Ewelina Piasna-Słupecka
submission deadline 30 Apr 2026 | 5 articles | Viewed by 11879 | Submission Open
Keywords: antioxidants; non-communicable diseases; vegetables; fruit; free radicals
(This special issue belongs to the Section Natural Products Chemistry)
Advances in Phenolic Based Complexes
edited by
submission deadline 30 Apr 2026 | 6 articles | Viewed by 9421 | Submission Open
Keywords: phenolic compounds; complexes; structure; properties; applications; analysis
Exploring Analytical Techniques in Pharmaceutical and Biomedical Analysis
edited by and
submission deadline 30 Apr 2026 | 6 articles | Viewed by 8313 | Submission Open
Keywords: pharmaceutical analysis; biomedical analysis; chromatographic analysis; spectroscopic analysis; mass spectrometry analysis; capillary electrophoresis; electrochemical analysis
(This special issue belongs to the Section Medicinal Chemistry)
Therapeutic Agents for Neurodegenerative Disorders—2nd Edition
edited by
submission deadline 30 Apr 2026 | 4 articles | Viewed by 7790 | Submission Open
Keywords: beta amyloid; tau; alpha-synuclein; huntingtin; autophagy; neuromodulators; neurotrophins; natural compounds; neuroinflammation; vascular dysfunction; neuronal death; drug development; therapeutic biomarkers; blood– brain barrier; small-molecule therapeutics; theranostics
(This special issue belongs to the Section Medicinal Chemistry)
Natural Products: Extraction, Analysis and Biological Activities
edited by and Łukasz Paprotny
submission deadline 30 Apr 2026 | 5 articles | Viewed by 7563 | Submission Open
Keywords: plant products; secondary metabolites; extraction; analysis; quality of natural products; biological activity; health-promoting properties; agricultural waste
(This special issue belongs to the Section Natural Products Chemistry)
Materials for Emerging Electrochemical Devices—2nd Edition submission deadline 30 Apr 2026 | 4 articles | Viewed by 7052 | Submission Open
Keywords: solid-state devices; batteries; electrochromic devices; smart windows; electrochemical devices
(This special issue belongs to the Section Materials Chemistry)
Volatile Natural Products: Extraction, Characterization and Application
edited by
submission deadline 30 Apr 2026 | 4 articles | Viewed by 5439 | Submission Open
Keywords: volatile components; aroma; essential oil; extraction methods; gas chromatography; gas chromatography– mass spectrometry; natural products
(This special issue belongs to the Section Natural Products Chemistry)
The Anticancer Drugs: A New Perspective
edited by and
submission deadline 30 Apr 2026 | 3 articles | Viewed by 5065 | Submission Open
Keywords: anticancer therapy; targeted therapy; drug design; drug discovery; drug synthesis; nanotechnology
(This special issue belongs to the Section Medicinal Chemistry)
Synthesis and Biological Evaluation of Coordination Compounds
edited by , Francisco Ferreira De Sousa and
submission deadline 30 Apr 2026 | 4 articles | Viewed by 4910 | Submission Open
Keywords: synthetic chemistry; coordination chemistry; biological activity; complexes; drug design; molecular targeting; metal– ligand interactions
(This special issue belongs to the Section Inorganic Chemistry)
Green and Environmentally Friendly Visible-Light- and Transition Metal-Catalyzed Synthesis
edited by
submission deadline 30 Apr 2026 | 2 articles | Viewed by 4882 | Submission Open
Keywords: green synthesis; sustainable chemistry; transition metal catalysis; light induced transformations; photoredox catalysis; organic synthesis
(This special issue belongs to the Section Organic Chemistry)
Exploring Bioactive Compounds in Foods and Nutrients for Human Health submission deadline 30 Apr 2026 | 3 articles | Viewed by 4438 | Submission Open
Keywords: chronic non-communicable diseases; bioactive compounds; nutrients; human health
Recent Advances in Porous Materials, 2nd Edition
edited by
submission deadline 30 Apr 2026 | 4 articles | Viewed by 4364 | Submission Open
Keywords: porous carbon; adsorption; catalysis; supercapacitor; biomass; energy storage; zeolite; fuel cell; molecular sieves; metal– organic frameworks; porous metal oxide; mesoporous silicon; macroporous resin; aerogel; separation; porous composites; covalent organic frameworks
(This special issue belongs to the Section Materials Chemistry)
Advances in Computational Spectroscopy, 2nd Edition
edited by and Małgorzata Biczysko
submission deadline 30 Apr 2026 | 4 articles | Viewed by 4110 | Submission Open
Keywords: spectroscopy; computational spectroscopy in inorganic chemistry; computational spectroscopy in bioinorganic chemistry; computational spectroscopy in biological systems; molecular and supramolecular structure; crystal structure; molecular modelling; time-independent and time-dependent approaches; molecular dynamics; density functional theory (DFT); time-dependent DFT (TD-DFT); coupled cluster (CC) approaches and composite schemes; bottom-up and top-down semi-experimental approaches
(This special issue belongs to the Section Computational and Theoretical Chemistry)
Recent Advances in Transition Metal Catalysis, 2nd Edition
edited by Dingyi Wang
submission deadline 30 Apr 2026 | 3 articles | Viewed by 3969 | Submission Open
Keywords: transition metal catalysis; photocatalysis; electrosynthesis; organic synthesis; asymmetric synthesis; C-H functionalization; C-C functionalization; C-X functionalization
(This special issue belongs to the Section Organic Chemistry)
Functional Materials for Chemical Sensing in Molecules
edited by , and Ming Hou
submission deadline 30 Apr 2026 | 2 articles | Viewed by 3527 | Submission Open
Keywords: functional materials; sensing materials; nanomaterials; composites; design and synthesis; chemical sensing; gas sensors; humidity sensors; biosensors
(This special issue belongs to the Section Materials Chemistry)
Chemical Analysis of Pollutant in the Environment submission deadline 30 Apr 2026 | 4 articles | Viewed by 3418 | Submission Open
Keywords: inorganic and organic pollutants; persistent organic pollutants; heavy metals; nano- and microplastics; chemical methods; instrumental methods; validation
(This special issue belongs to the Section Green Chemistry)
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