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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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Degradation of Aromatic Compounds in the Environment submission deadline 31 Jul 2026 | 2 articles | Viewed by 3240 | Submission Open
Keywords: aromatic compounds; microorganisms; biodegradation; biotransformation; advanced oxidation processes
(This special issue belongs to the Section Organic Chemistry)
The Chemistry of Food Quality Changes During Processing and Storage
edited by
submission deadline 31 Jul 2026 | 3 articles | Viewed by 3082 | Submission Open
Keywords: innovative processing; microbiological quality; mitigation strategies; processing optimization; shelf life extension; physicochemical changes; nutritional value; antioxidant capacity
(This special issue belongs to the Section Food Chemistry)
Application of Natural Products in the Treatment of Neurodegenerative Diseases
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 3027 | Submission Open
Keywords: natural products; neurovascular and neurodegenerative diseases; neuroprotection; bioactive compounds; drug discovery; molecular mechanisms; multi-target therapy; neuroinflammation
(This special issue belongs to the Section Natural Products Chemistry)
Advances in Medicinal Chemistry for Age-Related Diseases
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 2978 | Submission Open
Keywords: age-related diseases; neurodegenerative diseases; cardiovascular diseases; bioactive molecules; biomolecules; synthesis; computational studies; medicinal chemistry; chemical biology; drug discovery
(This special issue belongs to the Section Medicinal Chemistry)
Design and Preparation of New Metal Catalysts for Functional Organic Compounds Synthesis
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 2898 | Submission Open
Keywords: transition metal complexes; hybrid catalysts; nanocatalysts; single-atom catalysts; sustainable organic synthesis; natural products
(This special issue belongs to the Section Organometallic Chemistry)
Chemistry and Applications of Compounds Containing Quinoline or Isoquinoline Structure submission deadline 31 Jul 2026 | 1 articles | Viewed by 2729 | Submission Open
Keywords: quinoline; isoquinoline; synthesis; molecular structure; alkaloids; fluorescence; green chemistry; crystal structure; structure–activity relationship; antitumor agents
(This special issue belongs to the Section Organic Chemistry)
Advances in Synthesis and Biological Activity of Novel Derivatives Based on Five-Membered Heterocyclic Scaffolds and Their Intermediates, 3rd Edition submission deadline 31 Jul 2026 | 2 articles | Viewed by 2604 | Submission Open
Keywords: bioactive heterocycles; heterocyclic scaffolds; bioisosteric heterocyclic skeletons; azoles; pyrazole; oxazole; triazole; oxadiazole; drug design; in silico studies
(This special issue belongs to the Section Organic Chemistry)
Advances in Electrochemical Sensors
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 2582 | Submission Open
Keywords: electrochemical sensor; modified electrodes; photoelectrochemical sensor; wearable sensor; environmental monitoring; food safety analysis
(This special issue belongs to the Section Electrochemistry)
Recent Advances in the Organic Synthesis of Bioactive Natural Compounds and Their Analogs submission deadline 31 Jul 2026 | 2 articles | Viewed by 2500 | Submission Open
Keywords: bioactive natural compounds; organic synthesis; natural products; synthetic methodologies; medicinal chemistry; drug discovery; total synthesis
(This special issue belongs to the Section Natural Products Chemistry)
Innovative Green and Photochemical Approaches for Sustainable Organic Synthesis
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 2497 | Submission Open
Keywords: green chemistry; photochemistry; dual catalysis; photooxidation protocols; sustainable chemistry; material science; sustainable synthesis; green solvents; flow photochemistry; organic synthesis
(This special issue belongs to the Section Organic Chemistry)
Natural Ingredient-Based Cosmeceutical: Advances and Applications in Cosmetics Chemistry submission deadline 31 Jul 2026 | 3 articles | Viewed by 2491 | Submission Open
Keywords: natural ingredients; cosmeceuticals; cosmetic chemistry; bioactive compounds; plant extracts; skin health; anti-aging; antioxidants; cosmetic formulation; innovative technologies in cosmetology; safety and toxicology; photoprotection; marine-derived actives; biopolymers; sustainable cosmetics; nano-delivery systems; dermal applications; functional skincare
(This special issue belongs to the Section Medicinal Chemistry)
Biological Activity of Metal Complexes: Design and Characterization Strategies submission deadline 31 Jul 2026 | 1 articles | Viewed by 2488 | Submission Open
Keywords: metal complexes; biological activity; metallodrugs; anticancer: antibacterial; antiviral; antiparasitic: delivery methods; biophysical characterization; DFT; docking
(This special issue belongs to the Section Inorganic Chemistry)
Rare Earth Luminescent Materials and Complexes: Structure, Properties and Applications
edited by , and Vladimira S. Videva
submission deadline 31 Jul 2026 | 1 articles | Viewed by 2369 | Submission Open
Keywords: rare earth elements; lanthanide complexes; luminescent materials; photophysical properties; upconversion; downshifting; coordination compounds; hybrid materials; optical materials; bioimaging; photonics; sensing; nanomaterials; structure–property relationships
(This special issue belongs to the Section Photochemistry)
Porous Organic Materials: Design and Applications, 3rd Edition
edited by and Qi Chen
submission deadline 31 Jul 2026 | 1 articles | Viewed by 2361 | Submission Open
Keywords: topology design; synthesis; structure−function correlation; adsorption and separation; catalysis; energy storage and conversion; mass transportation; biological application
(This special issue belongs to the Section Materials Chemistry)
Phytochemicals as Promising Molecules in Acute and Chronic Neurodegeneration
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 2279 | Submission Open
Keywords: phytochemicals; nutrients; morphology; transmission electron microscopy; autophagy; proteasome; neurodegeneration; central nervous system; peripheral nervous system; sensory organs
(This special issue belongs to the Section Natural Products Chemistry)
Synthesis and Spectroscopic Characterization of Organometallic Compounds
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 2169 | Submission Open
Keywords: catalytic activity; synthesis and reactivity; spectroscopy; reaction mechanism; structural and spectroscopic characterization; turnover number (abbreviated TON); electrochemistry
(This special issue belongs to the Section Organic Chemistry)
Recent Advances in Chemical Treatments of Wastewater
edited by and
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1972 | Submission Open
Keywords: wastewater treatment processes; purification mechanism; environmental remediation materials; water reuse
(This special issue belongs to the Section Green Chemistry)
Advances in Sustainable and Functional Bio-Based Porous Materials for Environmental Remediation
edited by and Yufei Nan
submission deadline 31 Jul 2026 | 2 articles | Viewed by 1915 | Submission Open
Keywords: bio-based materials; porous structure; adsorption of heavy metals/organics/dyes/microplastics; sustainable processing
(This special issue belongs to the Section Materials Chemistry)
Marine Plant Metabolites as a Source of Novel Bioactive Agents: Isolation and Applications submission deadline 31 Jul 2026 | 2 articles | Viewed by 1894 | Submission Open
Keywords: marine algae; aquatic plants; bioactive metabolites; extraction and isolation techniques; natural product characterization; bioproducts and biofuels; cell metabolism; pharmacological targets
(This special issue belongs to the Section Natural Products Chemistry)
Functional Nanomaterials and Composites: From Design Towards Energy & Environmental Applications submission deadline 31 Jul 2026 | 3 articles | Viewed by 1563 | Submission Open
Keywords: nanomaterials; composites; energy applications; environmental remediation; sustainable technologies
(This special issue belongs to the Section Nanochemistry)
Indole Derivatives: Synthesis and Application 3rd edition submission deadline 31 Jul 2026 | 1 articles | Viewed by 1503 | Submission Open
Keywords: organic synthesis; natural products; heterocyclic compounds; ring cyclisations; metal complexes; organometallic compounds; polymers; molecular rearrangements; biological activity
Metal Ions and Metal Complexes in Medicinal Chemistry submission deadline 31 Jul 2026 | 1 articles | Viewed by 1472 | Submission Open
Keywords: metal ions; metal complexes; synthesis; study; spectral analysis; biological activity; ligands
(This special issue belongs to the Section Medicinal Chemistry)
Synthesis, Characterization and Applications of Vitrimers submission deadline 31 Jul 2026 | 1 articles | Viewed by 1460 | Submission Open
Keywords: vitrimers; covalent adaptive networks; dynamic exchangeable linkages; recyclability; reshapeability; self-healing
(This special issue belongs to the Section Materials Chemistry)
Microwave-Assisted Rapid Preparation and Processing of Nanostructured Materials and Their Applications
edited by and Hanping Yu
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1450 | Submission Open
Keywords: microwave; synthesis; preparation; processing; nanostructured materials; nanomaterials; nanostructures; application
(This special issue belongs to the Section Microwave Chemistry)
Valorization of Agri-Food By-Products for Disease Prevention: Extraction, Characterization and Translational Potential submission deadline 31 Jul 2026 | 1 articles | Viewed by 1391 | Submission Open
Keywords: agri-food by-products; bioactive compounds; health promotion; green extraction; circular bioeconomy
(This special issue belongs to the Section Food Chemistry)
Synthesis, Properties, and Applications of Chiral Molecules
edited by José Luis Olivares-Romero
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1384 | Submission Open
Keywords: asymmetric catalysis; new chiral catalyst; stereoselective synthesis of natural products and analogs; chiral auxiliaries and reagents; computational and mechanistic studies of chiral processes; stereochemical characterization (e.g., ECD, VCD, NMR, XRD); chirality in pharmaceutical development (ADMET, enantioselective binding); enantioselective recognition, sensors, and separation technologies; chiral materials in optoelectronics, polymers, and supramolecular chemistry; green and sustainable strategies for chiral synthesis
(This special issue belongs to the Section Organic Chemistry)
Extraction and Analysis of Natural Products in Food—4th Edition submission deadline 31 Jul 2026 | 2 articles | Viewed by 1379 | Submission Open
Keywords: natural products; extraction methodologies: green impacts and sustainability; separation and purification techniques; agri-food byproducts; natural bioactive compounds; food ingredients; industrial application
(This special issue belongs to the Section Natural Products Chemistry)
Bioactive Molecules for Targeted Cancer Therapy
edited by and Robert A. Falconer
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1370 | Submission Open
Keywords: enzymatic inhibitors; fragment-based discovery; chemical biology; covalent ligands; payloads; prodrug; (poly)peptide conjugates; antibody–drug conjugates; computational chemistry
(This special issue belongs to the Section Medicinal Chemistry)
Chemical and Physical Interactions Between Food and Packaging: Safety, Stability, and Quality submission deadline 31 Jul 2026 | 2 articles | Viewed by 1363 | Submission Open
Keywords: packaging; coating; physical properites; chemical properties; food quality; food safety
(This special issue belongs to the Section Food Chemistry)
Advances in Microplastics and Nanoplastics Analysis, 2nd Edition submission deadline 31 Jul 2026 | 2 articles | Viewed by 1246 | Submission Open
Keywords: microplastics; nanoplastics; monitoring; analytical methods; ecotoxicological assays
(This special issue belongs to the Section Analytical Chemistry)
Natural Pigments and Colorants in Food: Sources, Stability and Applications
edited by , Jarosław Wyrwisz, Małgorzata Moczkowska-Wyrwisz and Sabina Karp-Paździerska
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1204 | Submission Open
Keywords: natural colorants; anthocyanins; carotenoids; betalains; chlorophylls; encapsulation; stability; food applications; biopolymer interactions
(This special issue belongs to the Section Food Chemistry)
Development of Functional Hydrogels in Biomedicine
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1152 | Submission Open
Keywords: hydrogels; wound healing; biomaterials; nanotechnology; regenerative medicine; tissue regeneration
(This special issue belongs to the Section Medicinal Chemistry)
Porous Materials for Environmental Pollutant Adsorption and Degradation
edited by and Orsina Verdeş
submission deadline 31 Jul 2026 | Viewed by 1066 | Submission Open
Keywords: microporous and mesoporous materials; adsorbents; environmental applications; physical and chemical characterizations of materials; carbon capture and utilization (CCU); CO2 adsorption mechanisms; adsorbent regeneration; heterogeneous catalytic reactions
(This special issue belongs to the Section Materials Chemistry)
Anticancer, Antioxidant, and Anti-Inflammatory Activities of Natural Products, Second Edition
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 1009 | Submission Open
Keywords: natural products; anticancer; antioxidant; anti-inflammatory; plant extracts; derived compounds; oxidative stress
(This special issue belongs to the Section Natural Products Chemistry)
Application of Vibrational Spectroscopy Coupled with Chemometric Tools submission deadline 31 Jul 2026 | 1 articles | Viewed by 996 | Submission Open
Keywords: vibrational spectroscopy; chemometrics; quantitative analysis; qualitative analysis; NIR spectroscopy; IR spectroscopy; Raman spectroscopy
(This special issue belongs to the Section Analytical Chemistry)
Transition Metal Complexes in Cancer Therapy: Beyond Platinum
edited by Wai Lun Man
submission deadline 31 Jul 2026 | 1 articles | Viewed by 980 | Submission Open
Keywords: anticancer drugs; transition metal complexes; inorganic chemistry; medicinal chemistry; chemotherapy
(This special issue belongs to the Section Cross-Field Chemistry)
Natural Products as Plant Protection Agents submission deadline 31 Jul 2026 | 1 articles | Viewed by 977 | Submission Open
Keywords: advanced delivery systems; formulation; efficacy; control spectrum; persistence in the environment; field performance; sustainable agriculture; integrated pest management
(This special issue belongs to the Section Natural Products Chemistry)
Advanced Nanostructured Materials for Electrochemical Energy Storage Devices
edited by and
submission deadline 31 Jul 2026 | 1 articles | Viewed by 973 | Submission Open
Keywords: electrochemical energy storage; supercapacitors; batteries; flow batteries; 2D transition metal carbides/nitride (MXene) nanomaterials; transition metal compounds; aqueous batteries; advanced nanostructured materials
(This special issue belongs to the Section Materials Chemistry)
Heterocyclic Compounds: Design, Synthesis and Pharmacological Activity
edited by and Aleksandar Pashev
submission deadline 31 Jul 2026 | 1 articles | Viewed by 926 | Submission Open
Keywords: heterocyclic compounds; drug design; multicomponent reactions; green chemistry; pharmacological activity; medicinal chemistry
(This special issue belongs to the Section Organic Chemistry)
Feature Papers in Food Chemistry—4th Edition
edited by
submission deadline 31 Jul 2026 | 2 articles | Viewed by 891 | Submission Open
Keywords: food chemistry; functional food; ingredients; bioactivity; antioxidants; food safety and health; food processing
(This special issue belongs to the Section Food Chemistry)
Metal–Organic Framework-Based Materials: Preparation and Application in Electrochemistry
edited by and
submission deadline 31 Jul 2026 | 1 articles | Viewed by 876 | Submission Open
Keywords: metal–organic frameworks; energy storage/conversion; electrocatalysis; electrochemical sensors; flexible devices
(This special issue belongs to the Section Materials Chemistry)
Advances in Intercalation Chemistry submission deadline 31 Jul 2026 | 1 articles | Viewed by 864 | Submission Open
Keywords: intercalation; layered compound application; synthesis; clay-based materials; layered phosphates; layered double hydroxides; graphite; ion exchange
(This special issue belongs to the Section Materials Chemistry)
Secondary Metabolites: Green Isolation, AI-Assisted Elucidation, and Mechanistic Insight
edited by Niko Radulović and
submission deadline 31 Jul 2026 | 1 articles | Viewed by 822 | Submission Open
Keywords: secondary metabolites; natural products; AI/ML dereplication; metabolomics; advanced NMR/MS; green/flow isolation; chemoproteomics; mechanism of action; FAIR data
(This special issue belongs to the Section Natural Products Chemistry)
Plant Phenolics: Extraction, Profiling, Properties and Applications
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 811 | Submission Open
Keywords: plant; phenolic; extraction; purification; profiling; property; application; analytical characterization; functional evaluation; metabolomics; chemometric; antioxidant; antimicrobial, anti-inflammatory, bioactivity; food preservation; nutraceutical; pharmaceutical, biomaterial, sustainability; plant material
(This special issue belongs to the Section Natural Products Chemistry)
Chemical Research on Advanced Nanomaterials for Promoting Sustainability
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 729 | Submission Open
Keywords: nanomaterials; photocatalysis; adsorption; biodegradability; sustainability
(This special issue belongs to the Section Green Chemistry)
Advances in Glycoconjugates: Chemistry and Chemical Biology—2nd Edition
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 664 | Submission Open
Keywords: extraction; characterization; analysis; glycolipids; glycopeptides; glycoproteins; oligosaccharides; chemo-enzymatic modification/synthesis/green synthesis; glycosylation; glycodendrimers; glycomimetics; glycosyltransferases; amphiphiles; bio-control; food applications; cosmetic applications; biological applications; biomedical applications; biomaterials; drug-targeting systems; remediation
(This special issue belongs to the Section Chemical Biology)
Visible Light Active Photocatalysts for Organic Synthesis
edited by Wentao Xu and
submission deadline 31 Jul 2026 | Viewed by 628 | Submission Open
Keywords: organic chemistry; photocatalyst; synthesis; radical; single-electron transfer; atom transfer; energy transfer
(This special issue belongs to the Section Organic Chemistry)
Characterization of Bioactive Compounds from Plant Metabolites submission deadline 31 Jul 2026 | 1 articles | Viewed by 598 | Submission Open
Keywords: natural products chemistry; metabolomics; structural elucidation; analytical techniques; biological activity; bioinformatics; chemometrics
(This special issue belongs to the Section Natural Products Chemistry)
Analytical Techniques for Biochemical Applications: Advancing Precision in Molecular Research
edited by
submission deadline 31 Jul 2026 | 1 articles | Viewed by 570 | Submission Open
Keywords: analytical; analysis; biochemical; biomolecule; characterize; biomarker; quantify; therapeutic target; validate; mass spectrometry; chromatographic; spectroscopic; hyphenated; biochemical phenomena; trace element; metabolite profiling; protein characterization; biomarker discovery; separation; detection; bioanalytical method; omics approach; immunoassay; affinity-based technique; biological matrix; pharmaceutical biochemistry; nutritional biochemistry
(This special issue belongs to the Section Analytical Chemistry)
Characterization, Quality, and Authenticity of Olive Products: A Themed Issue in Honor of Professor Emerita Maria Z. Tsimidou submission deadline 31 Jul 2026 | Viewed by 518 | Submission Open
Keywords: olive oil; table olives; olive by-products; bioactive compounds; authenticity and quality markers; molecular and metabolomics characterization; food contaminants (MOHs and PAHs); analytical methods; antioxidant activity; food fraud; climate change effects; valorization
(This special issue belongs to the Section Food Chemistry)
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