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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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Novel Nanomaterials for Photocatalysis

edited by

Joanna Kisała

Denisa Ficai

and

Gianluca Viscusi

submission deadline 15 May 2026 | 3 articles | Viewed by 2863 | Submission Open

Keywords: photocatalyst synthesis; band gap engineering; enhanced light absorption; clean energy; advanced oxidation/reduction processes; self-cleaning coatings; photocatalysis reaction mechanisms; artificial photosynthesis

(This special issue belongs to the Section Photochemistry)

Natural Products as Antimicrobial and Anti-Infective Agents

edited by

Trinidad de Miguel

submission deadline 15 May 2026 | 1 articles | Viewed by 1587 | Submission Open

Keywords: antimicrobial activity; natural extracts; natural products; polyphenols; resistant bacteria

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

Metal Recycling: From Waste to Valuable Resources

edited by María Isabel Martín Hernández

submission deadline 15 May 2026 | 1 articles | Viewed by 1101 | Submission Open

Keywords: metal recycling; waste recycling; batteries; mining waste; minerals; post-consumer products; pyrometallurgical and hydrometallurgical techniques; recycling technologies; critical raw materials; li-ion batteries

(This special issue belongs to the Section Green Chemistry)

Natural Bioactives and Functional Ingredients in Foods

edited by

Cristina Caleja

submission deadline 16 May 2026 | 4 articles | Viewed by 1923 | Submission Open

Keywords: natural bioactive compounds; functional food ingredients; health-promoting foods; nutraceuticals; food innovation

(This special issue belongs to the Section Food Chemistry)

The State-of-the-Art in Improving the Antitumor Efficacy of Platinum Drugs

edited by

Mauro Ravera

and

Elisabetta Gabano

submission deadline 20 May 2026 | 1 articles | Viewed by 4190 | Submission Open

Keywords: bioinorganic chemistry; metal-based drugs; pt coordination compounds; pharmacodynamics; pharmacokinetics

(This special issue belongs to the Section Medicinal Chemistry)

Application of Organic Synthesis to Bioactive Compounds, 3rd Edition

edited by

Mª Ángeles Castro

and

David Díez

submission deadline 20 May 2026 | 2 articles | Viewed by 1875 | Submission Open

Keywords: natural products; organic synthesis; bioactive compounds; chemotherapy; artificial intelligence; chemo-enzymatic

(This special issue belongs to the Section Organic Chemistry)

Design, Modifications, and Medical Application of Polymer-Based Materials

edited by

Fusun Ozer

submission deadline 30 May 2026 | 5 articles | Viewed by 14621 | Submission Open

Keywords: polymer-based materials; synthetic polymers; drug delivery systems; biocompatibility; biomaterials; tissue engineering; wound healing; medical devices

(This special issue belongs to the Section Materials Chemistry)

Determination, Adsorption and Degradation Mechanisms of Environmental Pollutants

edited by Alina Catrinel Ion

submission deadline 30 May 2026 | 5 articles | Viewed by 7963 | Submission Open

Keywords: environmental pollutants; adsorption mechanisms; degradation pathways; analytical techniques; nanomaterials; heavy metals; organic contaminants

(This special issue belongs to the Section Green Chemistry)

Biomass Materials in Materials Chemistry: Preparation and Characterization, 2nd Edition

edited by

Caiqin Qin

submission deadline 30 May 2026 | 3 articles | Viewed by 7784 | Submission Open

Keywords: biomass material (including chitosan; chitin; starch; and biomass waste); catalyst; food packing; coating and film; adsorption

(This special issue belongs to the Section Materials Chemistry)

Green Analytical Chemistry: From Sample Preparation to Detection

edited by

Victoria Samanidou

and

Irene Panderi

submission deadline 30 May 2026 | 1 articles | Viewed by 7628 | Submission Open

Keywords: green chemistry; green analytical chemistry; green sample preparation; microextraction techniques; pharmaceutical analysis; bioanalysis; metric tools; miniaturization; automated techniques; sustainable analytical workflows

(This special issue belongs to the Section Analytical Chemistry)

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

edited by

Ewa Skała

and

Agnieszka Kicel

submission deadline 30 May 2026 | 2 articles | Viewed by 4234 | 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)

Emerging Contaminants and Their Transformation Products in the Environment: Advanced Analytical Methods for Assessing Ecological and Human Health Impacts

edited by

Maria Feo

submission deadline 30 May 2026 | 4 articles | Viewed by 3310 | Submission Open

Keywords: emerging contaminants; transformation products; analytical methods; ecological impact; human health risk; contaminant fate; environmental monitoring

(This special issue belongs to the Section Analytical Chemistry)

Inorganic Photoelectric Functional Materials: Design, Synthesis and Applications

edited by Luyi Zou

submission deadline 30 May 2026 | 3 articles | Viewed by 3258 | Submission Open

Keywords: photoelectric material; molecular structure; molecular composition; structural performance

(This special issue belongs to the Section Inorganic Chemistry)

Molecular Spectroscopy and Computations of Solvation Phenomena of Bioorganic Molecules: New Insights and Applications

edited by

Teobald Kupka

and

Ioannis P. Gerothanassis

submission deadline 30 May 2026 | 2 articles | Viewed by 2943 | Submission Open

Keywords: bioorganic molecules; solvation phenomena; spectroscopic methods; quantum chemical methods

(This special issue belongs to the Section Bioorganic Chemistry)

Effect of Natural Products in the Cancer Therapy Mechanism—2nd Edition

edited by

Maciej Tarnowski

submission deadline 30 May 2026 | 2 articles | Viewed by 1140 | Submission Open

Keywords: anticancer activities; therapeutic potential of plants; phytochemicals; natural products; apoptosis; metastasis; angiogenesis; molecular mechanisms; alkaloids; terpenoids; polyphenols

(This special issue belongs to the Section Chemical Biology)

Innovative Materials for Wastewater Treatment Applications

edited by

Anastasia D. Pournara

Manolis Manos

and

Dimosthenis Giokas

submission deadline 30 May 2026 | 1 articles | Viewed by 1055 | Submission Open

Keywords: wastewater treatment; heavy metal removal; adsorption and ion exchange; metal– organic frameworks (MOFs); metal sulfide sorbents; nanomaterials; functionalized composites; emerging pollutants

(This special issue belongs to the Section Materials Chemistry)

30th Anniversary of Molecules—Recent Advances in Ultrasound Chemistry

edited by

and

submission deadline 30 May 2026 | Viewed by 821 | Submission Open

Keywords: ultrasound; hydrodynamic cavitation; sonochemistry; sonocrystallisation; sono processing; sono extraction; applications in chemical engineering

(This special issue belongs to the Section Ultrasound Chemistry)

Computational Chemistry Approach for Materials Design

edited by

Tianwei He

and Lei Zhang

submission deadline 30 May 2026 | Viewed by 536 | 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)

Studies in Polymer Degradation

edited by

Anna Raffaela de Matos Costa

, Edcleide Maria Araujo and Bastos Y. M. De Almeida

submission deadline 30 May 2026 | Viewed by 380 | Submission Open

Keywords: degradation mechanisms; photooxidation; thermal degradation; upcycling technologies and additivities

(This special issue belongs to the Section Macromolecular Chemistry)

Advancing Polyethylene Glycol as a Green Solvent in Chemical and Engineering Applications

edited by

Markus M. Hoffmann

submission deadline 30 May 2026 | Viewed by 221 | Submission Open

Keywords: polyethylene glycol; PEGylated chemicals; fundamental research on PEG; PEG as a chemical solvent; PEG in deep eutectic solvents; PEG in mixed solvents; PEG centered applications

(This special issue belongs to the Section Molecular Liquids)

Flavors and Fragrances in China

edited by

Shuang Chen

submission deadline 30 May 2026 | Viewed by 190 | Submission Open

Keywords: Chinese foods; flavor chemistry; flavor analysis; GC– MS/olfactometry; Chinese baijiu

(This special issue belongs to the Section Flavours and Fragrances)

Recent Advances in Protein Crystallography Methods and Instrumentation

edited by

Eugenia Pechkova

submission deadline 30 May 2026 | Viewed by 176 | Submission Open

Keywords: protein crystallography; advanced crystallization techniques; advanced X-ray sources; X-ray free-electron lasers (XFELs); fourth-generation high-brilliance synchrotrons; microcrystals and nanocrystals; radiation damage; time-resolved experiments; cryo-electron microscopy (cryo-EM); advanced crystallization techniques; lipid cubic phase (LCP); microseed matrix screening (MMS); langmuir– Blodgett nanotemplate (LBNT); ultrasound and microwave-assisted crystallization; electro-crystallization; controlled evaporative crystallization; nanocrystallization

(This special issue belongs to the Section Chemical Biology)

Computational Approaches in Antimicrobial and Antiviral Drug Discovery: Deciphering Drug Binding and Molecular Mechanisms

edited by

Mattia Falconi

Alice Romeo

and Simone La Frazia

submission deadline 31 May 2026 | 7 articles | Viewed by 19359 | 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)

Current Research Status of Metal-Organic Frameworks and Covalent Organic Frameworks

edited by Teng Zhang and Wenju Wang

submission deadline 31 May 2026 | 6 articles | Viewed by 19331 | Submission Open

Keywords: gas separation; gas storage; catalyst; chemical sensing; biological application; energy storage

(This special issue belongs to the Section Materials Chemistry)

Featured Review Papers in Food Chemistry—2nd Edition

edited by

Fei Tao

submission deadline 31 May 2026 | 6 articles | Viewed by 17620 | Submission Open

Keywords: food analysis; food additives; food supplements; functional foods; physicochemical properties; agro-food wastes recycling; bioaccessibility and bioavailability; food stability; food security

(This special issue belongs to the Section Food Chemistry)

Biologically Active Molecules: Extraction Strategies, Therapeutic Potential and Biomedical Perspective

edited by

Grażyna Zgórka

submission deadline 31 May 2026 | 9 articles | Viewed by 16128 | Submission Open

Keywords: natural bioactive components; extraction techniques; therapeutic and biomedical profiling

(This special issue belongs to the Section Medicinal Chemistry)

Harnessing Nature’s Chemical Diversity: Innovations in Isolation, Identification, and Synthesis

edited by Niko Radulović and

Marko Z. Mladenović

submission deadline 31 May 2026 | 9 articles | Viewed by 14177 | Submission Open

Keywords: natural product chemistry; phytochemistry and essential oils; isolation and structural elucidation; chromatographic techniques (GC; HPLC; etc.); mass spectrometry (GC-MS; LC-MS; etc.); NMR spectroscopy; analytical chemistry; synthetic and semi-synthetic methods; bioactive compounds and biological activity; medicinal and aromatic plants; chemotaxonomy; chemical ecology and plant defense mechanisms; biotechnological applications; structure– activity relationships (SAR); biomimetic synthesis

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

Nutritional and Bioactive Components of Edible Parts of Medicinal Plants

edited by

Monika Kosmala

Elżbieta Karlińska

and Joanna Milala

submission deadline 31 May 2026 | 11 articles | Viewed by 13772 | Submission Open

Keywords: herbs; dietary fiber; polyphenols; ellagitannins; antioxidants; minerals; gastrointestinal track

(This special issue belongs to the Section Food Chemistry)

Natural Products in Anticancer Activity: 2nd Edition

edited by

Marcus Tullius Scotti

and

Luciana Scotti

submission deadline 31 May 2026 | 6 articles | Viewed by 13711 | Submission Open

Keywords: natural products; anticancer; drug; nature; molecule

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

Advanced Analytical Tools for Characterization and Quality Control of Food, Drugs, and Natural Active Ingredients, 3rd Edition

edited by

Alessandra Biancolillo

and

Angelo Antonio D'Archivio

submission deadline 31 May 2026 | 7 articles | Viewed by 12076 | Submission Open

Keywords: authentication; classification; pharmaceutical drugs; food; quality control; natural products; geographical origin; chemometrics

(This special issue belongs to the Section Analytical Chemistry)

New Horizons in Deep Eutectic Solvents (DESs): Synthesis, Characterization and Applications

edited by

Dorota Warmińska

Iwona Cichowska-Kopczyńska

and

Maciej Smiechowski

submission deadline 31 May 2026 | 8 articles | Viewed by 11749 | 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)

Small Molecule Drug Discovery and Development to Face Neurodegenerative Threats

edited by

Maria Maddalena Cavalluzzi

and

Giovanni Lentini

submission deadline 31 May 2026 | 6 articles | Viewed by 11654 | Submission Open

Keywords: neurodegenerative diseases; neuroprotection; drug discovery; synthesis of pharmaceutically relevant compounds; isolation and identification of biologically active natural products; in vitro; ex vivo; and in vivo biological evaluation; molecular docking; drug repositioning

(This special issue belongs to the Section Medicinal Chemistry)

Emerging Multifunctional Materials for Next-Generation Energy Systems

edited by

Zhao Ding

and Shicong Yang

submission deadline 31 May 2026 | 5 articles | Viewed by 11348 | 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)

Plant Volatile Organic Compounds: Extraction, Characterization and Biological Activities

edited by

Ana Lima

and

Elisabete Maria de Castro Lima

submission deadline 31 May 2026 | 5 articles | Viewed by 11305 | Submission Open

Keywords: plant volatile organic compounds; biosynthesis and emission; essential oils; biological activities; green extraction; omics technologies; circular bioeconomy

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

(Mass Spectrometric) Non Target Screening–Techniques and Strategies: Volume II

edited by

Thomas Letzel

submission deadline 31 May 2026 | 8 articles | Viewed by 11185 | Submission Open

Keywords: mass spectrometric non-target screening; NTS workflows; NTS strategies; NTS techniques (separation; ionization; detection); HPLC; SFC; GC; CE; HRMS; MS/MS; NTS software solutions; NTS open access software; NTS data evaluation; NTS and quality management

(This special issue belongs to the Section Analytical Chemistry)

New Strategies for Drug Development

edited by

Danuta Wojcieszyńska

and Ariel Marchlewicz

submission deadline 31 May 2026 | 6 articles | Viewed by 11085 | Submission Open

Keywords: drugs; biosynthesis; biotransformation; natural products; biological activity; bioactive compounds; structure– activity relationship; drug development

(This special issue belongs to the Section Medicinal Chemistry)

Virgin Olive Oil: Processing, Byproducts, Quality Control, and Nutraceutical Profile—3rd Edition

edited by

Carlotta Breschi

Lorenzo Cecchi

and

Maria Bellumori

submission deadline 31 May 2026 | 3 articles | Viewed by 10005 | Submission Open

Keywords: virgin olive oil quality authentication; byproduct management; volatile compounds; phenolic compounds; sensory analysis; health-promoting properties; biological activity; authentication of origin; innovative extraction processes

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

Bioactive Compounds for Brain Ischemia and Neurodegenerative Disease—3rd Edition

edited by

Ramunė Morkūnienė

and Dalia Marija Kopustinskiene

submission deadline 31 May 2026 | 6 articles | Viewed by 8526 | Submission Open

Keywords: brain; neuroprotection; neurodegenerative diseases; ischemia; mitochondria; oxidative stress; inflammation; bioactive compounds

(This special issue belongs to the Section Medicinal Chemistry)

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

edited by

Anna Puścion-Jakubik

submission deadline 31 May 2026 | 5 articles | Viewed by 8408 | 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)

Functional Heterocyclic Compounds with Outstanding Biological Activities

edited by

Oana Maria Dragostin

and

Maria Luisa Di Gioia

submission deadline 31 May 2026 | 3 articles | Viewed by 8384 | Submission Open

Keywords: pharmaceutical chemistry; bioactive heterocyclic compounds; antitumor extracts; plant extract– synthetic substances associations; biocompatibility; nontoxicity

(This special issue belongs to the Section Medicinal Chemistry)

Antimicrobial Compounds and Biocontrol Strategies in Food Microbiology and Safety

edited by

María José Benito

and

Rocío Casquete Palencia

submission deadline 31 May 2026 | 4 articles | Viewed by 8190 | Submission Open

Keywords: antimicrobial compound; natural; synthetic; microbial; application; biocontrol; food; crop; agricultural; pathogenic; spoilage; bacteria; mold; in vitro; in vivo; mechanisms of action; membrane disruption; enzyme inhibition; interference with microbial communication; resistance management

(This special issue belongs to the Section Food Chemistry)

Advances in Food Analytical Methods

edited by Yahui Guo

submission deadline 31 May 2026 | 7 articles | Viewed by 7549 | Submission Open

Keywords: food analysis; food component; food contaminant; food additive; functional compound; chromatography; mass spectrometry; spectroscopy; biosensor; chemometrics; AI-based approach; food safety; food authenticity; nutritional quality; food traceability

(This special issue belongs to the Section Food Chemistry)

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

edited by Ernesto Santoro and

Antonio Evidente

submission deadline 31 May 2026 | 7 articles | Viewed by 7256 | Submission Open

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

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

Phytochemistry, Antioxidants, and Anti-Diabetes

edited by

Valerija Vujčić Bok

, Gordana Rusak and

Ivana Sola

submission deadline 31 May 2026 | 3 articles | Viewed by 7247 | Submission Open

Keywords: bioactive compounds; natural antioxidants; plant extracts; functional foods; nutraceuticals; diabetes

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

Advances in Anticancer Activity of Natural Products and Related Compounds

edited by

Alexandra Mioc

submission deadline 31 May 2026 | 5 articles | Viewed by 6775 | Submission Open

Keywords: natural compounds; anticancer activity; bioactive compounds; cancer therapeutics; drug resistance; synergistic effect

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

5th Anniversary of the "Applied Chemistry" Section

edited by

Shaojun Yuan

submission deadline 31 May 2026 | 5 articles | Viewed by 6774 | Submission Open

Keywords: applied chemistry; new molecules and natural materials; solar energy and photo-electro-catalysis; analytical methods and techniques; electrochemistry and energy; biodegradable materials and medicines; environment and green chemistry

(This special issue belongs to the Section Applied Chemistry)

Food Bioactive Compounds: Chemical Challenges and Opportunities, 2nd Edition

edited by

Diana Obistioiu

and

Iuliana Popescu

submission deadline 31 May 2026 | 5 articles | Viewed by 6324 | Submission Open

Keywords: bioactive compounds; non-conventional extraction techniques; modern analytical methods; authenticity; molecular mechanism; functional properties; antimicrobial; antitumoral; anti-inflammatory; and antioxidant properties

(This special issue belongs to the Section Cross-Field Chemistry)

Exclusive Feature Papers on Molecular Structure, 2nd Edition

edited by

Chan Kyung Kim

submission deadline 31 May 2026 | 3 articles | Viewed by 5551 | Submission Open

Keywords: molecular structure; chemical bonding; molecular clusters; molecular similarity; protein structure prediction; quantum chemistry; spectroscopy; molecular dynamics simulations

(This special issue belongs to the Section Molecular Structure)

Feature Papers in Applied Chemistry: 4th Edition

edited by

Shaojun Yuan

submission deadline 31 May 2026 | 2 articles | Viewed by 5528 | Submission Open

Keywords: applied chemistry; new molecules/materials; analytical methods and techniques; electrochemistry and catalysis; new materials and medicines

(This special issue belongs to the Section Applied Chemistry)

Development and Design of Novel Electrode Materials

edited by

Lei Wang

submission deadline 31 May 2026 | 3 articles | Viewed by 5339 | Submission Open

Keywords: electrode materials; supercapacitors; batteries; electrocatalysis; photovoltaic materials

(This special issue belongs to the Section Electrochemistry)

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