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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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Advances and Opportunities of Natural Products in Drug Discovery

edited by

Daniel Pereira Bezerra

submission deadline 31 Dec 2026 | 9 articles | Viewed by 10644 | Submission Open

Keywords: natural products; drug discovery; pharmacological activity; biological activity; new compounds

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

Applied Chemistry in Europe, 2nd Edition

edited by

Rosa Iacovino

and Gianluca D'Abrosca

submission deadline 31 Dec 2026 | 9 articles | Viewed by 10630 | Submission Open

Keywords: nano-materials; environmental chemistry; chemical synthesis; green chemistry; theoretical chemistry analytical methods

(This special issue belongs to the Section Applied Chemistry)

Modern Trends and Solutions in Analytical Chemistry in Poland

edited by

Tomasz Tuzimski

submission deadline 31 Dec 2026 | 9 articles | Viewed by 9962 | 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)

Back to Nature: Pharmacological Activities of Phytochemicals Isolated from Medicinal Plants

edited by

Arik Dahan

and Ludmila Yarmolinsky

submission deadline 31 Dec 2026 | 9 articles | Viewed by 9186 | Submission Open

Keywords: medicinal plant; pharmacological activity; phytochemical; disease; drug; therapeutic; polyphenol; terpene; carotenoid; saponin; alkaloid; thiophene; sugar; fatty oil; resin; phytosterol; protein; peptide; anti-inflammatory; antidiabetic; neuroprotective; anticancer; antioxidative; antimicrobial; antiviral; antifungal

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

Chemical Analysis of Pollutant in the Environment

edited by

Ewa Szpyrka

and

Mohammad Russel

submission deadline 31 Dec 2026 | 5 articles | Viewed by 8992 | 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)

Innovative Approaches to Sustainable Wastewater Treatment—Recent Developments in Hazardous Pollutants Removal

edited by

Anna Wołowicz

and

Monika Wawrzkiewicz

submission deadline 31 Dec 2026 | 7 articles | Viewed by 8735 | Submission Open

Keywords: wastewater treatment; industrial wastewater; physical methods; chemical methods; biological methods; emerging micropollution; dyes; heavy metals; removal; (bio)sorbent; ion exchange resin

(This special issue belongs to the Section Green Chemistry)

Advance in Radiochemistry, 2nd Edition

edited by

Chang-Tong Yang

submission deadline 31 Dec 2026 | 6 articles | Viewed by 8589 | Submission Open

Keywords: radiochemistry; radionuclide (radioisotopes); radiolabeling; radiopharmaceutical (radiotracer); nuclear medicine; theranostics (diagnostics and therapeutics); molecular imaging

(This special issue belongs to the Section Medicinal Chemistry)

Novel Neuroprotective Agents: Design, Synthesis, and Biological Evaluation

edited by

Fatih Tok

and

Letizia Giampietro

submission deadline 31 Dec 2026 | 3 articles | Viewed by 8399 | Submission Open

Keywords: neurodegenerative diseases; heterocyclic compounds; rational design; enzyme inhibitors; structure–activity relationship; structural characterization

(This special issue belongs to the Section Medicinal Chemistry)

Chromatography—The Ultimate Analytical Tool, 3rd Edition

edited by

Victoria Samanidou

and

Natasa Kalogiouri

submission deadline 31 Dec 2026 | 6 articles | Viewed by 8310 | Submission Open

Keywords: chromatography; high-performance liquid chromatography; ultra-high-performance liquid chromatography; gas chromatography; two-dimensional gas chromatography; two-dimensional liquid chromatography; paper chromatography; liquid chromatography; preparative chromatography; supercritical fluid chromatography; thin-layer chromatography

(This special issue belongs to the Section Analytical Chemistry)

30th Anniversary of Molecules—Recent Advances in Electrochemistry

edited by

Claudio Fontanesi

and

Andrea Stefani

submission deadline 31 Dec 2026 | 9 articles | Viewed by 8155 | Submission Open

Keywords: electrochemical science; energy conversion; charge transfer; voltammetry; magnetoelectrochemistry/spin; redox chemistry

(This special issue belongs to the Section Electrochemistry)

30th Anniversary of Molecules: Recent Advances in Photochemistry

edited by

Marcelo Guzman

Youhong Tang

and

Michael Moustakas

submission deadline 31 Dec 2026 | 6 articles | Viewed by 8078 | Submission Open

Keywords: organic photochemistry synthetic photochemistry; photocatalysis; photofunctionalization; photobiology; medicinal photochemistry; computational photochemistry; photoelectrochemistry; solar energy conversion; condensed and gas phase photochemistry; polymer photochemistry; supramolecular photochemistry; photochromism; luminescent sensors; photochemistry for environmental remediation

(This special issue belongs to the Section Photochemistry)

Recent Advances in Porous Materials, 2nd Edition

edited by

Xinhua Qi

submission deadline 31 Dec 2026 | 5 articles | Viewed by 8049 | 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)

30th Anniversary of Molecules—Recent Developments in Biobased Polymers

edited by

Dimitrios Bikiaris

and

Eleftheria Xanthopoulou

submission deadline 31 Dec 2026 | 5 articles | Viewed by 7897 | Submission Open

Keywords: biobased polymers; sustainability; biodegradability; polymer recycling; polymer composites; polymer processing; green chemistry

(This special issue belongs to the Section Materials Chemistry)

Bee Product Chemistry: Identification and Characterization of Natural Compounds, 2nd Edition

edited by

Simona Sagona

submission deadline 31 Dec 2026 | 5 articles | Viewed by 7081 | Submission Open

Keywords: honey; wax; bee pollen; venom; propolis; royal jelly; bee larvae

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

30th Anniversary of Molecules: Recent Advances in Organometallic Chemistry

edited by

Zhi-Gang Gu

submission deadline 31 Dec 2026 | 5 articles | Viewed by 6782 | Submission Open

Keywords: metal–organic framework; organometallic compounds; coordination assembly; metal–organic cluster; metal–organic cage; supramolecular chemistry

(This special issue belongs to the Section Organometallic Chemistry)

Recent Advances in Transition Metal Catalysis, 2nd Edition

edited by Dingyi Wang

submission deadline 31 Dec 2026 | 4 articles | Viewed by 6555 | 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)

30th Anniversary of the MOF Concept

edited by

Jun Liang

and

Christoph Janiak

submission deadline 31 Dec 2026 | 4 articles | Viewed by 6394 | Submission Open

Keywords: metal–organic frameworks; gas storage and separation; catalysis; drug delivery; sensing and detection; energy applications

(This special issue belongs to the Section Organometallic Chemistry)

Advanced Materials for Photocatalytic and Photoelectrocatalytic Water-Splitting

edited by

Lagnamayee Mohapatra

submission deadline 31 Dec 2026 | 2 articles | Viewed by 5636 | Submission Open

Keywords: photocatalysis; photoelectrocatalysis; water splitting; bandgap engineering; semiconductor materials; visible-light-driven catalysis

(This special issue belongs to the Section Materials Chemistry)

Quantum-Chemical Studies for Superspecies—in Celebration of Professor Jean-François Gal’s 80th Birthday

edited by

Ewa Raczyńska

submission deadline 31 Dec 2026 | 6 articles | Viewed by 5356 | Submission Open

Keywords: structure of superspecies; neutral, ionic, and/or radical forms; isomerism; electron delocalization; energetic parameters of electron transfer; thermochemistry of proton transfer; quantum-chemical studies

Optimization of Process Methodology for Specialty and Fine Chemicals

edited by

Sebastian Balicki

and Łukasz Lamch

submission deadline 31 Dec 2026 | 5 articles | Viewed by 4554 | Submission Open

Keywords: process optimization; specialty and fine chemicals; process intensification; numerical and statistical optimization; design of experiments; green and sustainable chemistry; chemical engineering; data driven and model-based process design

(This special issue belongs to the Section Green Chemistry)

30th Anniversary of Molecules—Recent Advances in Physical Chemistry

edited by

Anan Yaghmur

submission deadline 31 Dec 2026 | 8 articles | Viewed by 4409 | Submission Open

Keywords: physical chemistry; dynamics and kinetics; thermodynamics; quantum chemistry; spectroscopy

(This special issue belongs to the Section Physical Chemistry)

Novel Nanomaterials for Photocatalysis

edited by

Joanna Kisała

Denisa Ficai

and

Gianluca Viscusi

submission deadline 31 Dec 2026 | 4 articles | Viewed by 4356 | 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)

Applications of Agro-Industrial By-Products in Health and Beauty: Innovative Strategies and Applications

edited by

Faezeh Fathi

and

Maria Beatriz P. P. Oliveira

submission deadline 31 Dec 2026 | 6 articles | Viewed by 4317 | Submission Open

Keywords: valorization of by-products; bioactive compounds; extraction technologies; delivery systems (micro/nano-carriers); health and skin applications

(This special issue belongs to the Section Food Chemistry)

Interactions of Plant-Derived Foods and Medicines with the Gut Microbiome

edited by

Ladislav Kokoska

and

Tomas Kudera

submission deadline 31 Dec 2026 | 6 articles | Viewed by 4275 | Submission Open

Keywords: anti-inflammatory effect; antimicrobial activity; fermented foods; gut metabolism; gut microbiota; herbal product; immunomodulatory effect; microbiome therapy; phytochemical; plant-based diet; postbiotics; prebiotic effect; probiotic microorganisms

Bioactive Peptides: Isolation, Identification and Application

edited by

Monika Karaś

Urszula Szymanowska

and

Anna Maria Papini

submission deadline 31 Dec 2026 | 1 articles | Viewed by 4275 | Submission Open

Keywords: peptides; proteins; hydrolysis; bioavailability; application; biological activity; food technology

(This special issue belongs to the Section Food Chemistry)

Advances in Trace Element Analysis: Techniques and Applications

edited by

Davide Spanu

submission deadline 31 Dec 2026 | 4 articles | Viewed by 3960 | Submission Open

Keywords: trace element analysis; speciation techniques; environmental monitoring; atomic spectrometry; mass spectrometry; chromatography; bioavailability; environmental impact

(This special issue belongs to the Section Analytical Chemistry)

Analytical Methods for Food and Environmental Pollutants: Current and Future Perspectives, 2nd Edition

edited by

Julia Martín

and

Esteban Alonso

submission deadline 31 Dec 2026 | 5 articles | Viewed by 3875 | Submission Open

Keywords: emerging pollutants; food samples; environmental samples; sampling; sample preparation; analytical instrumentation; chemometric tools

(This special issue belongs to the Section Analytical Chemistry)

Bioactive Compounds Encapsulation System: Design and Applications

edited by

Yong-Jiang Xu

and

Gangcheng Wu

submission deadline 31 Dec 2026 | 2 articles | Viewed by 3862 | Submission Open

Keywords: bioactive compounds; encapsulation; nanocarriers; bioavailability; targeted delivery; drug delivery; functional foods

(This special issue belongs to the Section Food Chemistry)

30th Anniversary of Molecules—Recent Advances in Medicinal Chemistry

edited by

Diego Muñoz-Torrero

and

Robert J. Doerksen

submission deadline 31 Dec 2026 | 3 articles | Viewed by 3502 | Submission Open

Keywords: medicinal chemistry; drug discovery and development; lead compounds; proximity-inducing drugs; photopharmacology; covalent modifiers; antibody-drug conjugates; epigenetic modulators

(This special issue belongs to the Section Medicinal Chemistry)

Secondary Metabolites from Natural Products: Extraction, Isolation and Biological Activities, 2nd Edition

edited by

Radosław Kowalski

and

Tomasz Baj

submission deadline 31 Dec 2026 | 4 articles | Viewed by 3148 | Submission Open

Keywords: natural products; secondary metabolites; analytical techniques application; extraction and separation; chemical composition; phytochemistry; isolation and structure elucidation; secondary metabolites; antimicrobial activity; antioxidant activity; anticancer activity

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

Plant Bioactive Compounds in Pharmaceuticals, 2nd Edition

edited by

Jurca Tünde

and

Laura Gratiela Vicas

submission deadline 31 Dec 2026 | 2 articles | Viewed by 3119 | Submission Open

Keywords: bioactive compounds; medicinal plant; phytocomplexes; cell cultures

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

Heterocyclic Molecules in Drug Discovery

edited by

Beata Morak-Młodawska

submission deadline 31 Dec 2026 | 2 articles | Viewed by 3086 | Submission Open

Keywords: organic synthesis of bioactive heterocyclic compounds; structural analysis of heterocycles; biological activity of heterocycles; ADME properties of heterocycles; in silico analysis and experimental analysis of heterocyclic molecules

(This special issue belongs to the Section Medicinal Chemistry)

Featured Reviews in Chemical Biology 2026

edited by

Seung Bum Park

and

Haidong Li

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2827 | Submission Open

Keywords: chemical biology; chemical probes; phenotypic screening; target identification/validation; bioactive metabolites; signaling molecules; drug discovery; enzymology; synthetic biology

(This special issue belongs to the Section Chemical Biology)

Photo- and Sonodynamic Antimicrobial and Anticancer Compounds

edited by

Marina Nisnevitch

and

Faina Nakonechny

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2696 | Submission Open

Keywords: photosensitizers; sonosensitizers; photodynamic treatment; sonodynamic treatment; antimicrobials; anticancer treatment

(This special issue belongs to the Section Medicinal Chemistry)

Organometallic Compounds: Design, Synthesis and Application: 2nd Edition

edited by

Yanping Ma

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2523 | Submission Open

Keywords: organometallic compounds; design and synthesis; transition metal complexes; catalysis; metal coordination; catalytic applications; mechanisms; organic–inorganic hybrid compounds

(This special issue belongs to the Section Organometallic Chemistry)

Immunomodulatory and Anti-Inflammatory Activities of Natural Compounds with Adaptogenic Potential

edited by Daniel Załuski and

Jakub Gębalski

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2479 | Submission Open

Keywords: adaptogens; immunomodulation; inflammation; phytochemicals; herbal medicine; cytokines; oxidative stress

(This special issue belongs to the Section Medicinal Chemistry)

Functional Molecules as Novel Cosmetic Ingredients, 2nd Edition

edited by Jing Wang and

Zhong Liu

submission deadline 31 Dec 2026 | 1 articles | Viewed by 2450 | Submission Open

Keywords: synthetic molecules; plant extracts; natural compounds; biotech-derived molecules; natural-derived molecules; fermentation-derived ingredients; biological activity; cosmetics; encapsulation and delivery technologies of ingredients; skin-care; hair-care

(This special issue belongs to the Section Applied Chemistry)

Foam and Emulsion Systems: Stability, Rheology, and Applications

edited by

Marcel Krzan

submission deadline 31 Dec 2026 | 1 articles | Viewed by 2375 | Submission Open

Keywords: foams; emulsions; interfacial stability; rheology; soft matter; applications

Exploring Phytochemicals: Their Structure, Biological Activities and Health-Promoting Effects

edited by

Elizabeth Opara

and Samireh Jorfi

submission deadline 31 Dec 2026 | 1 articles | Viewed by 2322 | Submission Open

Keywords: phytochemicals; medicinal/culinary plants; bioactive properties; health benefits

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

Metal–Halide Perovskites for Solar Cell and LED Materials

edited by

René M. Williams

submission deadline 31 Dec 2026 | 1 articles | Viewed by 2312 | Submission Open

Keywords: hybrid halide perovskite solar cell materials; perovskite light-emitting diode materials; optical properties; luminescence; material property characterization; thin solid films; crystal formation

(This special issue belongs to the Section Materials Chemistry)

Bioactive Metabolites from Marine Invertebrates and Their Associated Microorganisms—in Celebration of Professors Longmei Zeng and Jingyu Su’s 95th Birthday

edited by

Yonghong Liu

Cui-Xian Zhang

and Shihai Xu

submission deadline 31 Dec 2026 | 1 articles | Viewed by 2255 | Submission Open

Keywords: marine organisms; bioactive metabolites; marine invertebrates and their associated microorganisms

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

Innovative Technologies for Food Processing and Preservation

edited by

Joana Madureira

and

Sandra Cabo Verde

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2212 | Submission Open

Keywords: innovative food processing technologies; food preservation; food safety and quality; food sustainability; shelf-life extension; microbial inactivation; bioactive compounds

(This special issue belongs to the Section Food Chemistry)

Functional Molecules Design for Nutrition Health

edited by

Libing Liu

and

Yu Feng

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2203 | Submission Open

Keywords: molecule design; biological activity; nutrition and health; personalized nutrition protocols; precision therapeutic methods

(This special issue belongs to the Section Materials Chemistry)

Fullerene and Its Application

edited by

Vasyl M. Haramus

Jacek Piosik

and Yuriy Prylutskyy

submission deadline 31 Dec 2026 | 3 articles | Viewed by 2189 | Submission Open

Keywords: fullerene; fullerene-based nanomaterials; computer simulation; synthesis and physicochemical characterization; biomedical application

(This special issue belongs to the Section Applied Chemistry)

Advances in Lactam Chemistry: From Synthetic Strategies to Biological Applications

edited by

Faïza Diaba

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2083 | Submission Open

Keywords: lactams; sustainable synthesis; structure–activity relationship (SAR); drug discovery; β-lactam analogues; heterocyclic chemistry; therapeutic applications; antimicrobial and anticancer agents

(This special issue belongs to the Section Organic Chemistry)

Advances in Density Functional Theory (DFT) Calculation, 2nd Edition

edited by

Łukasz Szeleszczuk

submission deadline 31 Dec 2026 | 4 articles | Viewed by 2025 | Submission Open

Keywords: DFT; theoretical and computational chemistry; new functional materials; calculations of new materials and catalysts; characterization of the catalytic materials; non-covalent interactions (NCI); biological activities; electronic properties; kinetics and catalysis; QTAIM

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

Recent Advances in Peptide Assembly and Bioactivity

edited by

Wen Li

submission deadline 31 Dec 2026 | 1 articles | Viewed by 1994 | Submission Open

Keywords: peptide; self-assembly; co-assembly; stimuli-responsive; bioactivity; biomaterials

(This special issue belongs to the Section Bioorganic Chemistry)

Deep Eutectic Solvents: Properties, Applications and Perspectives

edited by

Ana Rita C. Duarte

and

Tiancheng Mu

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1956 | Submission Open

Keywords: green chemistry; deep eutectic systems; physico-chemical properties; thermodynamic modelling; application development; extraction; biocatalysis; CO2 capture; electrochemistry

(This special issue belongs to the Section Green Chemistry)

Bioactive Molecules from Natural Reservoirs: Discovery, Synthesis, and Translational Applications in Health and Food

edited by

Li Ren

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1938 | Submission Open

Keywords: bioactive molecules; medicinal and edible plants; microorganisms; synthesis; bioactive mechanisms; human health; food quality control

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

Progress in Green Analytical Methods for the Detection of Trace Substances in Complex Matrices

edited by

Federica Bianchi

and

Nicolò Riboni

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1920 | Submission Open

Keywords: green analytical chemistry; greenness evaluation metrics; integrated analytical platforms; miniaturized sample preparation; green materials for sample pre-treatment; on-line and in-line sampling; automatization

(This special issue belongs to the Section Analytical Chemistry)

Displaying special issue 701-750 on page 15 of 27.

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