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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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Active Ingredients in Functional Foods and Their Impact on Health, 2nd Edition

edited by

Anna Puścion-Jakubik

submission deadline 31 Dec 2025 | 2 articles | Viewed by 1215 | Submission Open

Keywords: functional foods; active ingredients; bioactive compounds; health impact; nutraceuticals; dietary patterns; personalized nutrition

(This special issue belongs to the Section Food Chemistry)

New Horizons in Heterogeneous Catalysts: From Design to Applications

edited by

Xingkun Chen

Yuan Tan

and Ziang Zhao

submission deadline 31 Dec 2025 | 2 articles | Viewed by 1173 | Submission Open

Keywords: single-atom catalyst; nanocatalyst; heterogeneous catalyst; CO2; ester; alcohol; green chemistry

(This special issue belongs to the Section Green Chemistry)

Chemical Approaches in Water Treatment: Environmental Toxicology and Hygiene Perspectives

edited by

Antonietta Siciliano

and

Lorenzo Saviano

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1120 | Submission Open

Keywords: water treatment technologies; environmental toxicology; hygiene practices; chemical contaminants; eco-friendly water treatment; public health safety; toxicological risk assessment; pollutant removal methods

(This special issue belongs to the Section Green Chemistry)

Functional Foods Enriched with Natural Bioactive Compounds

edited by

Natalia Drabińska

submission deadline 31 Dec 2025 | 1 articles | Viewed by 1115 | Submission Open

Keywords: functional food; bioactive compounds; phytochemicals; fortification; valorization; by-products; polyphenols; glucosinolates; gluten-free; probiotics; prebiotics; health benefits; sensory analysis; bioavailability

(This special issue belongs to the Section Natural Products Chemistry)

Ab Initio Multireference Quantum Chemical Investigations of Molecules: Chemical Bonding, Spectroscopy, and Beyond

edited by Isuru R. Ariyarathna

submission deadline 31 Dec 2025 | 2 articles | Viewed by 1112 | Submission Open

Keywords: quantum chemistry; ab initio multireference methods; spectroscopy; chemical bonding; transition metals; lanthanides; actinides

(This special issue belongs to the Section Computational and Theoretical Chemistry)

Spectroscopic Insights into Innovative Materials

edited by Waldeci Paraguassu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 998 | Submission Open

Keywords: spectroscopic techniques; materials science; electronic structure; chemical composition; surface analysis

(This special issue belongs to the Section Physical Chemistry)

Isolation, Characterization, and Application of Anticancer Agents from Natural Products

edited by

Ewa Skała

and

Agnieszka Kicel

submission deadline 31 Dec 2025 | 2 articles | Viewed by 991 | Submission Open

Keywords: medicinal plants; bioactive phytochemicals; cytotoxic activity; oxidative stress; anticancer potential; mechanism of action; cancer cells

(This special issue belongs to the Section Natural Products Chemistry)

Enzyme Inhibitors: Design, Synthesis and Biological Evaluation—3rd Edition

edited by

Letizia Crocetti

and

Maris Cinelli

submission deadline 31 Dec 2025 | 1 articles | Viewed by 871 | Submission Open

Keywords: enzyme inhibitors; drug design; organic synthesis; biological evaluation; molecular modeling studies; kinetic experiment

(This special issue belongs to the Section Chemical Biology)

Recent Advances in Flame Retardant Polymeric Materials, 2nd Edition

edited by

Chao Ma

submission deadline 31 Dec 2025 | 1 articles | Viewed by 761 | Submission Open

Keywords: polymeric materials; flame retardants; synthesis; multifunctionality; mechanisms; nanocomposites

(This special issue belongs to the Section Materials Chemistry)

Advances in European Medicinal Chemistry

edited by

Jorge A. R. Salvador

and

Thomas Mavromoustakos

submission deadline 31 Dec 2025 | 1 articles | Viewed by 738 | Submission Open

Keywords: medicinal chemistry; drug design; natural compounds; synthesis and analysis; structure-activity relationships; biological screening; chemical biology and biological chemistry; biomaterials; excipients

(This special issue belongs to the Section Medicinal Chemistry)

Research on Functional Active Ingredients of Edible Fungi

edited by Tianqiao Yong,

Jia Song

and

Zhaojun Wei

submission deadline 31 Dec 2025 | 1 articles | Viewed by 734 | Submission Open

Keywords: fungi; compounds; biological activities; uric acid; metabolism; diabetes; cancer; virus

(This special issue belongs to the Section Food Chemistry)

New Insights into Electrochemical Energy Storage and Conversion: Aqueous Rechargeable Batteries

edited by

Hongpeng Li

and Ruizheng Zhao

submission deadline 31 Dec 2025 | 1 articles | Viewed by 724 | Submission Open

Keywords: aqueous batteries; electrochemical reactions; electrode materials; electrolyte; regulation

(This special issue belongs to the Section Electrochemistry)

Analysis of Pesticide Residues in Food and Environmental Samples

edited by

Xu Jing

and Xueke Liu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 713 | Submission Open

Keywords: analytical methods; green analytical chemistry; sample pretreatment; microextraction methods; detection techniques; quantitative determination; degradation pathways; metabolite analysis; toxicity evaluation

(This special issue belongs to the Section Analytical Chemistry)

Functional Hybrid Materials via Sol–Gel Processing: Design and Properties

edited by

Erika Andrea Levei

submission deadline 31 Dec 2025 | Viewed by 671 | Submission Open

Keywords: sol– gel synthesis; hybrid materials; biomedicine; encapsulation of biomolecules; catalysis; magnetic behavior; structural properties; thermal behavior

(This special issue belongs to the Section Materials Chemistry)

Magnetic Targeted Nanomaterials and Applications in Drug Delivery and Diagnostics

edited by

Athanasios Skouras

Sophia G. Antimisiaris

and

Alexandru Mihai Grumezescu

submission deadline 31 Dec 2025 | 1 articles | Viewed by 639 | Submission Open

Keywords: magnetic targeting; theranostics; drug delivery; nanomaterials; magnetic hyperthermia

(This special issue belongs to the Section Nanochemistry)

Advances in Natural Fiber Composites

edited by

Pietro Russo

submission deadline 31 Dec 2025 | 1 articles | Viewed by 636 | Submission Open

Keywords: natural fibers; polymer composites; natural fiber-reinforced polymers; heterogeneous structures; complex interfaces

(This special issue belongs to the Section Macromolecular Chemistry)

Ionic Liquids and Molecular Materials: Advances in Functional Interfaces and Applications

edited by

José C. S. Costa

and

Yuji Matsumoto

submission deadline 31 Dec 2025 | 1 articles | Viewed by 628 | Submission Open

Keywords: ionic fluids; bulk properties; surface and interfacial properties; thin films; vacuum engineering; energy harvesting and storage; functional materials

(This special issue belongs to the Section Physical Chemistry)

Advances in Nanomaterials for Biomedical Applications, 2nd Edition

edited by Xueen Jia and Ce Zhang

submission deadline 31 Dec 2025 | 1 articles | Viewed by 597 | Submission Open

Keywords: 2D nanomaterials; metal– organic frameworks (MOFs); metasurfaces; biosensor; drug delivery

(This special issue belongs to the Section Nanochemistry)

Synthesis and Characterization of Peripherally Functionalized Porphyrazines and Phthalocyanines

edited by

Tomasz Koczorowski

and

Dariusz T. Mlynarczyk

submission deadline 31 Dec 2025 | 1 articles | Viewed by 552 | Submission Open

Keywords: porphyrazine; phthalocyanine; organic synthesis; photodynamic therapy; photodynamic inactivation; photocatalysis; photodegradation; electrocatalysis

(This special issue belongs to the Section Organic Chemistry)

Functional Materials for Small Molecule Electrocatalysis

edited by

Feng Hu

, Linlin Li and Qingxue Lai

submission deadline 31 Dec 2025 | 1 articles | Viewed by 544 | Submission Open

Keywords: electrocatalysis; nanomaterials; electrochemical conversion of H2O; CO2 and N2

(This special issue belongs to the Section Nanochemistry)

Degradation of Aromatic Compounds in the Environment

edited by

Urszula Guzik

and

Wojciech Smułek

submission deadline 31 Dec 2025 | 1 articles | Viewed by 541 | Submission Open

Keywords: aromatic compounds; microorganisms; biodegradation; biotransformation; advanced oxidation processes

(This special issue belongs to the Section Organic Chemistry)

Silymarin and Derivatives: From Biosynthesis to Health Benefits 2.0

edited by

Dominique Delmas

submission deadline 31 Dec 2025 | Viewed by 499 | Submission Open

Keywords: silymarin: sources and biosynthesis; secondary metabolites and silymarin derivatives; silymarin bioavailability; silymarin and cardiovascular diseases; silymarin and metabolic syndrome; silymarin and cancer; silymarin and inflammation and immune diseases; silymarin and degenerative age-related diseases

(This special issue belongs to the Section Natural Products Chemistry)

Epoxy Resin Synthesis, Performance and Application Research: Second Edition

edited by

Jin Li

submission deadline 31 Dec 2025 | 1 articles | Viewed by 479 | Submission Open

Keywords: synthesis; modification; and characterization; curing kinetics and mechanism; epoxy-based nanocomposites; interface characteristics; advanced hardeners; modifiers; and accelerators; thermal; mechanical; and dielectric properties; applications; quantum chemical calculations; molecular design

(This special issue belongs to the Section Macromolecular Chemistry)

Nanomaterials in Photochemical Devices: Advances and Applications

edited by

Braulio García-Cámara

submission deadline 31 Dec 2025 | 1 articles | Viewed by 463 | Submission Open

Keywords: nanomaterials; photochemistry; photocatalysis; nanoparticles; energy conversion; environmental remediation; biomedical applications; photoacoustic imaging

(This special issue belongs to the Section Photochemistry)

Peptide Chemistry: Recent Trends and Advancements

edited by Fa-Jie Chen and

Alicja Kluczyk

submission deadline 31 Dec 2025 | Viewed by 416 | Submission Open

Keywords: peptide synthesis; cyclic peptide; peptide ligation; peptide stapling; peptide library; peptide therapy; structure and activity

(This special issue belongs to the Section Medicinal Chemistry)

Microwave-Assisted Rapid Preparation and Processing of Nanostructured Materials and Their Applications

edited by

Ying-Jie Zhu

and Hanping Yu

submission deadline 31 Dec 2025 | Viewed by 402 | Submission Open

Keywords: microwave; synthesis; preparation; processing; nanostructured materials; nanomaterials; nanostructures; application

(This special issue belongs to the Section Microwave Chemistry)

Multifunctional Electrocatalysts for Overall Water Splitting

edited by Haeseong Jang

submission deadline 31 Dec 2025 | Viewed by 399 | Submission Open

Keywords: electrocatalysts; water splitting; oxygen evolution reaction; hydrogen evolution reaction; nanostructure

(This special issue belongs to the Section Electrochemistry)

Recent Advances in Antibacterial Nanomaterials

edited by

Luca Scotti

submission deadline 31 Dec 2025 | 1 articles | Viewed by 373 | Submission Open

Keywords: nanoparticles; biochemistry; antibacterial; bacteriostatic; cell membrane

(This special issue belongs to the Section Nanochemistry)

Computational Chemistry Approach for Materials Design

edited by

Tianwei He

and Lei Zhang

submission deadline 31 Dec 2025 | Viewed by 347 | Submission Open

Keywords: computational materials; catalysts; DFT calculation; machine learning; energy conversion and storage materials

(This special issue belongs to the Section Computational and Theoretical Chemistry)

NMR Spectroscopy in Structural Biology and Drug Discovery Research

edited by

Marilisa Leone

Flavia Anna Mercurio

and

Marian Vincenzi

submission deadline 31 Dec 2025 | Viewed by 344 | Submission Open

Keywords: solution-NMR; in cell-NMR; solid state-NMR; NMR screening (small molecules and peptides); fragment-based drug discovery; SAR by NMR; ligand-based approaches; target-based approaches; protein-ligand interactions; peptides as drugs; epitope mapping; 19F NMR; chemical shift mapping

(This special issue belongs to the Section Bioorganic Chemistry)

Functional Foods: Chemical Challenges and Opportunities

edited by Yan Zhang and Haixia Wu

submission deadline 31 Dec 2025 | Viewed by 270 | Submission Open

Keywords: functional foods; chemical stability; advanced extraction methods; chemical modification; chemical bioavailability; food safety

(This special issue belongs to the Section Food Chemistry)

Chemical Conversion and Utilization of CO₂

edited by Gang Li

submission deadline 31 Dec 2025 | Viewed by 268 | Submission Open

Keywords: CO2 utilization for green synthesis; photocatalytic CO2 utilization; C-H carboxylation with CO2; green synthetic methodology development; functional materials design for CO2 utilization

(This special issue belongs to the Section Organic Chemistry)

Advances in Extraction, Biological Activity of Natural Products and Their Derivatives

edited by Ernesto Santoro and

Antonio Evidente

submission deadline 31 Dec 2025 | Viewed by 257 | Submission Open

Keywords: novel extraction; absolute configuration; supercritical fluid; microwave-assisted extraction; natural products

(This special issue belongs to the Section Natural Products Chemistry)

Applications of Solid-Phase Microextraction and Related Techniques, the Second Edition

edited by

Hiroyuki Kataoka

submission deadline 31 Dec 2025 | Viewed by 229 | Submission Open

Keywords: solid-phase microextraction; micriextraction techniques; extraction sorbents; pharmaceutical analysis; forensic analysis; bioanalysis; environmental analysis; food analysis

(This special issue belongs to the Section Analytical Chemistry)

Biodegradable Functional Copolymers, Second Edition

edited by

Jean Coudane

submission deadline 31 Dec 2025 | Viewed by 201 | Submission Open

Keywords: biodegradable (co)polymers; chemical functionalization; macromolecular synthesis; macromolecular bioconjugates; environmental and biomedical applications; targeted drug delivery; tissue engineering

(This special issue belongs to the Section Macromolecular Chemistry)

Exploring Schiff Base Ligands and Their Metal Complexes

edited by

Mihaela Badea

submission deadline 31 Dec 2025 | Viewed by 197 | Submission Open

Keywords: schiff base ligands; complexes; X-ray structure; antimicrobial; antitumor; antiviral activity; catalysts

(This special issue belongs to the Section Inorganic Chemistry)

Molecular Approaches to Drug Design: From Target Identification to Delivery

edited by

Michio Kurosu

submission deadline 31 Dec 2025 | Viewed by 196 | Submission Open

Keywords: drug design; target identification; drug delivery; protein-based therapeutics; targeted therapy

(This special issue belongs to the Section Medicinal Chemistry)

Pharmaceuticals in the Environment: Micropollutants and Degradation Dynamics

edited by Agnieszka Nowak and

Urszula Guzik

submission deadline 31 Dec 2025 | Viewed by 193 | Submission Open

Keywords: pharmaceuticals; microorganisms; toxicity; micropollutants; biodegradation; biotransformation; advanced oxidation processes; analysis; intermediate identification; chromatography

(This special issue belongs to the Section Green Chemistry)

Analytical Techniques in Environmental Chemistry, 2nd Edition

edited by

Marcin Frankowski

submission deadline 31 Dec 2025 | Viewed by 187 | Submission Open

Keywords: environmental analytical chemistry; contaminants; environmental impact assessment; analytical techniques; environmental pollution

(This special issue belongs to the Section Analytical Chemistry)

Corrosion Electrochemistry: A Themed Issue in Honor of the Many Contributions of Prof. Dr. Changjian Lin

edited by Jiming Hu and Guozhe Meng

submission deadline 31 Dec 2025 | Viewed by 184 | Submission Open

Keywords: corrosion electrochemistry; corrosion and protection; anti-corrosion coatings; electrochemical test

(This special issue belongs to the Section Electrochemistry)

Advances in Ammonia Synthesis

edited by Wenbo Gao

submission deadline 31 Dec 2025 | Viewed by 169 | Submission Open

Keywords: ammonia synthesis; heterogeneous catalysis; nitrogen activation; ammonia energy; reaction mechanism; photo/electrochemical ammonia synthesis

(This special issue belongs to the Section Applied Chemistry)

Artificial Intelligence Driving Transformative Advances in Food Science and Technology

edited by

Alicia Gil-Ramírez

and

Miguel Rebollo-Hernanz

submission deadline 31 Dec 2025 | Viewed by 160 | Submission Open

Keywords: food sustainability; artificial intelligence; food processes optimization; functional foods; food safety; individualized nutrition

(This special issue belongs to the Section Food Chemistry)

Synthesis, Characterization and Anticancer Activities of Metal Complexes

edited by

Burgert Blom

submission deadline 31 Dec 2025 | Viewed by 159 | Submission Open

Keywords: in vitro activity; in vivo activity; metal complex; biological studies; anticancer activity; bimetallic complexes; mechanistic studies

(This special issue belongs to the Section Inorganic Chemistry)

Advances in Electrochemical Sensors

edited by

Yixi Xie

submission deadline 31 Dec 2025 | Viewed by 159 | Submission Open

Keywords: electrochemical sensor; modified electrodes; photoelectrochemical sensor; wearable sensor; environmental monitoring; food safety analysis

(This special issue belongs to the Section Electrochemistry)

Innovative Nanostructures for Energy and Environmental Applications

edited by

Janardhan Reddy Koduru

submission deadline 31 Dec 2025 | Viewed by 159 | Submission Open

Keywords: nanostructures; energy conversion; environmental applications; quantum dots; nanowires; graphene; MXenes; metal nitrides; 2D materials; 3D materials; sustainable energy; pollutant removal; synthesis techniques; adsorbents; water purification; sustainable materials; green energy technologies; advanced nanomaterials; multifunctional materials; hydrogen production; catalysis

(This special issue belongs to the Section Materials Chemistry)

30th Anniversary of Molecules—Recent Advances in Food Chemistry

edited by

Ana Novo Barros

and Marta Coelho

submission deadline 31 Dec 2025 | Viewed by 157 | Submission Open

Keywords: functional foods; nutraceuticals; bioactive compounds; analytical techniques; by-products; food chemistry

(This special issue belongs to the Section Food Chemistry)

Propolis in Human and Bee Health—2nd Edition

edited by

Magdalena Woźniak

and

Izabela Ratajczak

submission deadline 31 Dec 2025 | Viewed by 156 | Submission Open

Keywords: propolis; plant sources; biological activity; bee health; bioactive compounds; pharmacological properties; analytical methods; applications

(This special issue belongs to the Section Natural Products Chemistry)

Anti-Aging and Skin Rejuvenation Ingredients: Design and Research

edited by

Anca Maria Juncan

Luca-Liviu Rus

and Daniela Lucia Muntean

submission deadline 31 Dec 2025 | Viewed by 156 | Submission Open

Keywords: anti-aging ingredients; skin rejuvenation; nutricosmetics and cosmeceuticals; bioactive compounds; formulation and delivery systems; extracellular matrix and skin biology; in silico; in vitro and in vivo assessment

(This special issue belongs to the Section Applied Chemistry)

The Synthesis and Application of Rare-Earth-Doped Luminescent Materials

edited by

Liang Zhou

and Rui Wang

submission deadline 31 Dec 2025 | Viewed by 156 | Submission Open

Keywords: luminescent materials; molecular design; luminescent mechanisms and processes; display; lighting; detection

(This special issue belongs to the Section Materials Chemistry)

Heavy Metal Pollutants in Water, Wastewater and Sediments: From Occurrence and Determination to Removal and Recovery

edited by