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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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Organic Semiconducting Materials Design in the Functional Organic Transistors
edited by Wan Yue and Shengyu Cong
submission deadline 30 Sep 2025 | Viewed by 39 | Submission Open
Keywords: organic field-effect transistors; organic electrochemical transistors (OECTs); organic electrochemical neuronal synapse (OENS); small molecules; conjugated polymers
(This special issue belongs to the Section Materials Chemistry)
Plants and Animal Bioreactors: Insights into Bioactive Molecules for Therapeutic Innovation submission deadline 30 Sep 2025 | Viewed by 36 | Submission Open
Keywords: plant bioreactors; animal bioreactors; bioproduction; plant metabolites; plant hormones; biologics; biosimilars; drug research and development; nutraceuticals; plant engineering; pharmaceutical biotechnology; agricultural biotechnology; bioactive molecules
(This special issue belongs to the Section Natural Products Chemistry)
Phytochemistry, Antioxidants, and Anti-Diabetes
edited by , Gordana Rusak and
submission deadline 1 Oct 2025 | 2 articles | Viewed by 2490 | Submission Open
Keywords: bioactive compounds; natural antioxidants; plant extracts; functional foods; nutraceuticals; diabetes
(This special issue belongs to the Section Natural Products Chemistry)
Bioactive Metabolites from Marine Invertebrates and Their Associated Microorganisms—in Celebration of Professors Longmei Zeng and Jingyu Su’s 95th Birthday
edited by , and Shihai Xu
submission deadline 1 Oct 2025 | 1 articles | Viewed by 778 | Submission Open
Keywords: marine organisms; bioactive metabolites; marine invertebrates and their associated microorganisms
(This special issue belongs to the Section Natural Products Chemistry)
Materials Investigation Through Vibrational Spectroscopy/Microscopy
edited by Dimitrios Palles
submission deadline 1 Oct 2025 | 1 articles | Viewed by 618 | Submission Open
Keywords: Raman (micro)spectroscopy; infrared (micro)spectroscopy; surface-enhanced Raman spectroscopy; surface-enhanced infrared spectroscopy; transmission Raman spectroscopy; photothermal infrared spectroscopy; material structure/bonding– function correlations with vibrational properties
(This special issue belongs to the Section Materials Chemistry)
Advances in Chemistry of Cosmetics
edited by
submission deadline 15 Oct 2025 | 5 articles | Viewed by 7305 | Submission Open
Keywords: melanocytes (melanogenesis); fibroblasts (anti-wrinkles); papilla (hair growth); keratinocytes (skin health); macrophages (inflammation); adipocytes (obesity); natural products; organic synthesis; enzyme inhibitors; molecular docking
(This special issue belongs to the Section Medicinal Chemistry)
Health Benefits and Applications of Bioactive Phenolic Compounds submission deadline 15 Oct 2025 | 2 articles | Viewed by 6120 | Submission Open
Keywords: natural bioactive compounds; health benefits; bioactive properties; extraction methodologies; in vitro and in vivo studies; potential applications
(This special issue belongs to the Section Natural Products Chemistry)
Chemical Constituents and Biological Activities of Natural Sources submission deadline 15 Oct 2025 | 3 articles | Viewed by 3370 | Submission Open
Keywords: natural compounds; biological activities; isolation; identification and structural elucidation; pharmacological evaluation
(This special issue belongs to the Section Natural Products Chemistry)
New Horizons in Deep Eutectic Solvents (DESs): Synthesis, Characterization and Applications submission deadline 15 Oct 2025 | 2 articles | Viewed by 2029 | Submission Open
Keywords: deep eutectic solvent; methods of synthesis; physicochemical and thermal properties; extraction and separation; catalysis; pharmaceuticals; energy storage
(This special issue belongs to the Section Molecular Liquids)
The Preparations and Applications of Organophosphorus Compounds
edited by K. Michał Pietrusiewicz and
submission deadline 15 Oct 2025 | 1 articles | Viewed by 1551 | Submission Open
Keywords: organophosphorus chemistry; organophosphorus compounds; phosphorus-containing heterocycles; reactivity of organophosphorus compounds; phosphorus-based organocatalysis; phosphorus-containing drugs; structure elucidation of organophosphorus compounds
(This special issue belongs to the Section Organic Chemistry)
Emerging Multifunctional Materials for Next-Generation Energy Systems
edited by and Shicong Yang
submission deadline 30 Oct 2025 | 3 articles | Viewed by 2656 | Submission Open
Keywords: multifunctional material; self-healing material; smart materials; hybrid material; solar-grade silicon purification; energy conversion and storage
(This special issue belongs to the Section Materials Chemistry)
Modern Trends and Solutions in Analytical Chemistry in Poland
edited by
submission deadline 30 Oct 2025 | 1 articles | Viewed by 777 | Submission Open
Keywords: analytical and physical chemistry; separation sciences; chromatographic methods and related techniques (HPLC; SPE; SFC; GC; CZE; UPLC; GC × GC; and others); sample preparation and extraction techniques (SPE; QuEChERS/d-SPE; SPME; SBSE; HFLPME; DLLME; FUSLE; and others); detection techniques (DAD; FLD; MS; MS/MS; and others); spectrometry; bioanalytics; proteomics; metabolomics; and lipidomics; nanotechnology; environmental sciences; natural product chemistry (isolation; identification and quantification of bioactive compounds; and in vitro and then in vivo investigations on their biological activity); food analysis and food safety; xenobiotics analysis in environmental; biological; and food samples; chemometrics and statistical analysis
(This special issue belongs to the Section Analytical Chemistry)
Advancements in Desulfurization Catalysts: Enhancing Efficiency Through Nanostructured Materials
edited by Wei Jiang, and Suhang Xun
submission deadline 30 Oct 2025 | Viewed by 206 | Submission Open
Keywords: oxidative desulfurization; hydrodesulfurization; adsorption desulfurization; nanostructure; heterogeneous catalysis; homogeneous catalysis
(This special issue belongs to the Section Materials Chemistry)
The Role of Transition Metal Compounds in Energy Conversion
edited by , and
submission deadline 30 Oct 2025 | Viewed by 108 | Submission Open
Keywords: carrier density; electrode materials; energy conversion and storage; layered transition metal dichalcogenides; porous materials; MXene; fuel cells; batteries; supercapacitors; hydrogen production; energy storage and distribution; CO2 reduction
(This special issue belongs to the Section Electrochemistry)
Doping Strategies for Carbon-Based Electrocatalysts
edited by
submission deadline 30 Oct 2025 | Viewed by 84 | Submission Open
Keywords: carbons; p-doping; n-doping; Fermi level engineering; electrocatalysis; electrochemical sensors; energy conversion and storage; environmental remediation
(This special issue belongs to the Section Electrochemistry)
Antioxidant Discovery: Computational Modeling, Molecular Mechanisms and Therapeutic Applications submission deadline 30 Oct 2025 | Viewed by 80 | Submission Open
Keywords: antioxidants; computational design; neuroprotection; therapeutic applications; thermochemistry and kinetics; theoretical study
(This special issue belongs to the Section Medicinal Chemistry)
Extraction, Characterization, and Potential Applications of Bioactive Molecules from Natural Sources, 4th Edition submission deadline 31 Oct 2025 | 15 articles | Viewed by 22818 | Submission Open
Keywords: sustainable extraction; waste valorization; medicinal plants; antioxidant; naturally derived active ingredients; bioactive compounds from microorganisms; antimicrobials; anticancer
(This special issue belongs to the Section Natural Products Chemistry)
Flavonoids’ and Other Polyphenols’ Pharmacological Activities for Phytopharmaceutical and Medicinal Applications, 2nd Edition submission deadline 31 Oct 2025 | 6 articles | Viewed by 22344 | Submission Open
Keywords: natural plant products; flavonoids; polyphenols; medicinal plants; traditional medicines; biological activity; pharmacological activity; phytopharmaceutical and medicinal applications
(This special issue belongs to the Section Natural Products Chemistry)
Recent Advances in Exploiting Ionic Liquids for Biocatalytic and Pharmaceutical Application
edited by and
submission deadline 31 Oct 2025 | 6 articles | Viewed by 14500 | Submission Open
Keywords: ionic liquids; nanomaterials; emulsions; biological activity; biocatalysis; active pharmaceutical ingredients; drug delivery; mechanism of action; toxicity; pharmaceuticals; enzymes
(This special issue belongs to the Section Molecular Liquids)
Exclusive Papers Collection of Editorial Board Members and Invited Scholars on Food Chemistry submission deadline 31 Oct 2025 | 8 articles | Viewed by 14133 | Submission Open
Keywords: functional food; ingredients; bioactivity; antioxidants; food and health; food processing
(This special issue belongs to the Section Food Chemistry)
2D Nanomaterials and Composites for Energy and Environmental Sustainability—2nd Edition submission deadline 31 Oct 2025 | 6 articles | Viewed by 12620 | Submission Open
Keywords: film processes; flexible substrates; carbon capture and conversion; nano-electronics and devices; ink-jet printing; nanostructured permanent magnets; carbon-based nanomaterials; membrane separation; solar cells; photonic materials; OLED; polymer-based nanocomposites; gas capture; H2 storage and conversion
(This special issue belongs to the Section Nanochemistry)
Microbial Natural Products: A Promising Source for Medical Application (2nd Edition) submission deadline 31 Oct 2025 | 5 articles | Viewed by 12179 | Submission Open
Keywords: microorganisms; primary and secondary metabolites; antimicrobial and anticancer agents; neuroprotective agents; gut microbiota compounds; food supplements; functional food; medicines
(This special issue belongs to the Section Natural Products Chemistry)
Advanced Functional Nanomaterials for Energy Conversion and Storage
edited by Xiaohui Sun and Yongxiao Tuo
submission deadline 31 Oct 2025 | 5 articles | Viewed by 7735 | Submission Open
Keywords: nanomaterials synthesis; characterization; catalysis; battery; energy storage
(This special issue belongs to the Section Nanochemistry)
Advances in Biomass Chemicals: Transformation and Valorization
edited by Marlene Lopes
submission deadline 31 Oct 2025 | 6 articles | Viewed by 7111 | Submission Open
Keywords: lignocellulosic biomass; agro-industrial by-products; biofuels; biochemicals; biorefinery; pretreatments; hydrolysis
(This special issue belongs to the Section Green Chemistry)
New Trends of Nuclear Magnetic Resonance Spectroscopy (NMR) in Chemical and Biomolecular Studies
edited by
submission deadline 31 Oct 2025 | 6 articles | Viewed by 6706 | Submission Open
Keywords: NMR spectroscopy; metabolomics; pharmaceutical studies; solid-state NMR; 19F NMR spectroscopy; peptide; IDP proteins
(This special issue belongs to the Section Analytical Chemistry)
Fundamental Aspects of Chemical Bonding—2nd Edition
edited by
submission deadline 31 Oct 2025 | 7 articles | Viewed by 6628 | Submission Open
Keywords: chemical bonding; bonding analysis; calculations; interactions; MO analysis; VB analysis; electron localization function (ELF); quantum theory of atoms in molecules (QTAIM)
(This special issue belongs to the Section Computational and Theoretical Chemistry)
Development of Food Packaging Materials submission deadline 31 Oct 2025 | 5 articles | Viewed by 6375 | Submission Open
Keywords: plastics; glass; metals; paper/paperboard; biodegradable materials; recyclable materials; active and Intelligent materials; nanomaterials in packaging
(This special issue belongs to the Section Food Chemistry)
Computational Approaches in Antimicrobial and Antiviral Drug Discovery: Deciphering Drug Binding and Molecular Mechanisms
edited by , and Simone La Frazia
submission deadline 31 Oct 2025 | 5 articles | Viewed by 5686 | Submission Open
Keywords: molecular docking; virtual screening; molecular dynamics simulations; artificial intelligence; antimicrobial or antiviral activity; computational drug discovery; molecular mechanisms; experimental assays
(This special issue belongs to the Section Computational and Theoretical Chemistry)
Advances in the Formulation of Nanocarriers for Healthcare and Environmental Applications submission deadline 31 Oct 2025 | 4 articles | Viewed by 4871 | Submission Open
Keywords: drug delivery systems; nanomedicines; nanotechnologies in agrifood and livestock fields; nanocarriers for target-specific pollutant capture; sustainable nanocarriers for environmental management and remediation
(This special issue belongs to the Section Nanochemistry)
Insights on Inorganic/Organic Composites Containing Natural Bioactive Molecules
edited by
submission deadline 31 Oct 2025 | 2 articles | Viewed by 4789 | Submission Open
Keywords: hybrid material; composite; natural compound; clay; drug delivery system; solid phase adsorption; bioactivity
(This special issue belongs to the Section Natural Products Chemistry)
Natural Medicines: Chemical Constituents and Pharmacological Activities: 2nd Edition
edited by
submission deadline 31 Oct 2025 | 3 articles | Viewed by 4640 | Submission Open
Keywords: plant extract; natural products; pharmacology; analysis
(This special issue belongs to the Section Natural Products Chemistry)
New Research on Novel Photo-/Electrochemical Materials
edited by and
submission deadline 31 Oct 2025 | 4 articles | Viewed by 4483 | Submission Open
Keywords: photo-/electrochemistry; water splitting; fuel cell; zinc air battery; nitrogen reduction reaction; CO2 reduction reaction; photocatalytic degradation; gas sensor
(This special issue belongs to the Section Materials Chemistry)
Novel Synthetic Macrocycles: Synthesis, Structures, Properties and Applications
edited by
submission deadline 31 Oct 2025 | 2 articles | Viewed by 4277 | Submission Open
Keywords: macrocycles; supramolecular chemistry; host– guest chemistry; synthesis; applications
(This special issue belongs to the Section Macromolecular Chemistry)
Advances in Coordination Chemistry, 3rd Edition
edited by Juan Niclós-Gutiérrez and
submission deadline 31 Oct 2025 | 4 articles | Viewed by 3551 | 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)
Bioactive Compounds from Roots, Stems, Leaves, Flowers, Fruits, and Seeds: 2nd Edition submission deadline 31 Oct 2025 | 5 articles | Viewed by 3490 | 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)
Natural Deep Eutectic Solvents and Other Green Solvents: The New Lights for Extraction and Valorization of Bioactive Phytochemical Compounds submission deadline 31 Oct 2025 | 1 articles | Viewed by 3205 | Submission Open
Keywords: green solvents; NaDES; extraction; valorization; bioactive phytochemical compounds
(This special issue belongs to the Section Green Chemistry)
Microwave and Ultrasound-Assisted Extraction for Plant Bioactive Compounds submission deadline 31 Oct 2025 | 4 articles | Viewed by 3185 | Submission Open
Keywords: microwave-assisted extraction; ultrasound-assisted extraction; plant bioactive compounds; polyphenols; pigments; volatiles; antioxidants
(This special issue belongs to the Section Natural Products Chemistry)
Advanced Functional Nanomaterials in Medicine and Health Care
edited by Dorota Katarzyna Flak, Tomasz Zalewski, and Łucja Przysiecka
submission deadline 31 Oct 2025 | 2 articles | Viewed by 3117 | Submission Open
Keywords: drug and nucleic acid delivery; imaging/contrast agent delivery; theranostic nanoparticles; nanovaccines; personalised medicine; targeted therapy; nanobiotechnology; nanodevice; regenerative medicine; biosafety/biocompatibility of nanomaterials; stability of nanomaterials in biological fluids; nanotoxicology; pharmacokinetics and pharmacodynamics; nanoinformatics and nanomodelling
(This special issue belongs to the Section Medicinal Chemistry)
Catalytic Materials for Energy and Environment: Preparation, Properties and Applications
edited by and Yanfei Xu
submission deadline 31 Oct 2025 | 1 articles | Viewed by 2513 | Submission Open
Keywords: biomass conversion; CO2 hydrogenation; plastic degradation; alkane dehydrogenation; syngas conversion; methane reforming; catalysts for energy and environment; catalytic mechanism
(This special issue belongs to the Section Materials Chemistry)
Mesoporous Silica and Related Nanomaterials: Synthesis, Characterization and Applications in Drug Delivery Systems and Green Chemistry submission deadline 31 Oct 2025 | 1 articles | Viewed by 2044 | Submission Open
Keywords: mesoporous materials; drug delivery; encapsulation; nanoconfinement; adsorption; green chemistry; catalysts immobilization; catalyst recovery; pollutant reduction; renewable materials
(This special issue belongs to the Section Materials Chemistry)
Recent Advances in Transition Metal Catalysis, 2nd Edition
edited by Dingyi Wang
submission deadline 31 Oct 2025 | 2 articles | Viewed by 1950 | 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)
Recent Advances in Porous Materials, 2nd Edition
edited by
submission deadline 31 Oct 2025 | 4 articles | Viewed by 1916 | 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)
Synthetic Studies Aimed at Heterocyclic Organic Compounds, 2nd Edition
edited by
submission deadline 31 Oct 2025 | 4 articles | Viewed by 1894 | Submission Open
Keywords: heterocycles; synthesis; methods; medicinal; agricultural
(This special issue belongs to the Section Organic Chemistry)
Processing of Materials by Supercritical Fluids, 3rd Edition
edited by
submission deadline 31 Oct 2025 | 1 articles | Viewed by 1849 | Submission Open
Keywords: supercritical fluids; materials; aerogels; particles; membranes; fibers; scaffolds
(This special issue belongs to the Section Green Chemistry)
Micro/Nano-Materials for Anti-Icing and/or De-Icing Applications
edited by Hui Gao
submission deadline 31 Oct 2025 | 2 articles | Viewed by 1584 | Submission Open
Keywords: anti-icing; de-icing; micro/nano-materials; micro/nano-structures; composite materials
(This special issue belongs to the Section Materials Chemistry)
Biologically Active Molecules: Extraction Strategies, Therapeutic Potential and Biomedical Perspective
edited by
submission deadline 31 Oct 2025 | 3 articles | Viewed by 1445 | Submission Open
Keywords: natural bioactive components; extraction techniques; therapeutic and biomedical profiling
(This special issue belongs to the Section Medicinal Chemistry)
Phytochemicals and Bioactivity: Advances in Natural Product Chemistry and Applications
edited by , Claudio Olea-Azar and
submission deadline 31 Oct 2025 | 2 articles | Viewed by 1284 | Submission Open
Keywords: phytochemicals; biological activity; natural products; phytochemical analysis; bioactive compounds; natural product chemistry; plant-based therapeutics; isolation and characterization
(This special issue belongs to the Section Natural Products Chemistry)
Modern Materials in Energy Storage and Conversion—Second Edition
edited by Yuanyuan Zhu, and
submission deadline 31 Oct 2025 | 2 articles | Viewed by 1218 | Submission Open
Keywords: modern materials; batteries; supercapacitors; solar cells; catalysis
(This special issue belongs to the Section Materials Chemistry)
Recent Advances in Electrochemistry: Analysis and Application
edited by and Wenhe Xie
submission deadline 31 Oct 2025 | 1 articles | Viewed by 1062 | Submission Open
Keywords: advanced electrode materials; electrochemical energy storage; bioelectrochemistry applications; nanotechnology in electrochemistry; electrochemical sensors and biosensors; computational electrochemistry; electrochemical water treatment
(This special issue belongs to the Section Electrochemistry)
Synthesis and Biological Evaluation of Coordination Compounds
edited by , Francisco Ferreira De Sousa and
submission deadline 31 Oct 2025 | 1 articles | Viewed by 948 | 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)
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