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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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5th Anniversary of Section "Flavours and Fragrances" and 30th Anniversary of Molecules

edited by

Henryk H. Jeleń

submission deadline 31 Oct 2026 | 6 articles | Viewed by 10549 | Submission Open

Keywords: flavor; aroma; taste; fragrances; volatilomics; flavoromics; sensomics; food flavors; analysis of flavor compounds

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

Insights on Inorganic/Organic Composites Containing Natural Bioactive Molecules

edited by

Stefania Cometa

submission deadline 31 Oct 2026 | 2 articles | Viewed by 5985 | 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)

Recent Advances in Catalysts for Biomass Conversion

edited by

Minghao Li

and Chunlin Chen

submission deadline 31 Oct 2026 | 1 articles | Viewed by 2839 | Submission Open

Keywords: biomass utilization; biomass platform chemicals; lignocellulose model compounds; catalysis; bio-based materials

Advanced Oxidation of Emerging Pollutants in Water

edited by Rongfang Yuan

submission deadline 31 Oct 2026 | 1 articles | Viewed by 1908 | Submission Open

Keywords: advanced oxidation; photocatalytic oxidation; photoelectrocatalytic processes; ultrasonic irradiation; peroxymonosulfate activation; emerging pollutants; water treatment

(This special issue belongs to the Section Green Chemistry)

Neurochemistry: Recent Advances and Future Opportunities in Antidepressants and Mood Stabilizers

edited by

Simona Dedoni

submission deadline 31 Oct 2026 | Viewed by 233 | Submission Open

Keywords: neurochemistry; antidepressants; mood stabilizers; neurotransmitters; neuroplasticity; biomarkers; inflammation and mood disorders; personalized medicine; rapid-acting therapeutics; mechanisms of action

(This special issue belongs to the Section Medicinal Chemistry)

Exploration of Organometallic Materials and Beyond for Sustainable Energy Applications

edited by

Zhen Zhang

and

Miao Zhang

submission deadline 31 Oct 2026 | Viewed by 131 | Submission Open

Keywords: metal complex; metallated polymer; organometallic materials; non-fullerene acceptor; triplet exciton; charge transfer; organic optoelectronic devices; organic photovoltaics; thick-film solar cell

(This special issue belongs to the Section Materials Chemistry)

Discovering the Pharmacological and Medicinal Potentials of Plant Flavonoids and Other Polyphenols from Nature

edited by

Duangjai Tungmunnithum

submission deadline 31 Oct 2026 | Viewed by 72 | Submission Open

Keywords: flavonoids; polyphenols; natural product; anti-aging; anti-oxidative stress; anti-cancer; pharmacological activity; medical application

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

Targeting Cell Signaling Pathways in Drug Discovery

edited by

Jessica Ceramella

submission deadline 31 Oct 2026 | Viewed by 53 | Submission Open

Keywords: targeted therapy; non-communicable diseases; enzymes; synthetic compounds; natural extracts; molecular modeling; chemically modified drugs; cellular key targets

(This special issue belongs to the Section Chemical Biology)

Featured Reviews on Bioactive Flavour and Fragrance Compounds, 2nd Edition

edited by

Riccardo Petrelli

submission deadline 31 Oct 2026 | Viewed by 53 | Submission Open

Keywords: essential oils; agriculture; food; formulations; crop protection; insecticides; extraction techniques; chemical characterization; biological activity

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

Trends in Biosensors for Biomedical Applications

edited by

Magdalena Stobiecka

and

Katarzyna Ratajczak

submission deadline 31 Oct 2026 | Viewed by 51 | Submission Open

Keywords: optical biosensors (SPR; SERS; fluorescence; colorimetric); electrochemical biosensors; nanogravimetric biosensors; immunosensors; DNA-based biosensors; aptamer-based biosensors; exosomal biomarkers; enzymatic-biosensors

(This special issue belongs to the Section Chemical Biology)

Starch: Chemistry, Technology, and Application—2nd Edition

edited by

Xu Lu

submission deadline 31 Oct 2026 | Viewed by 42 | Submission Open

Keywords: starch modification; starch complexes; resistant starch; digestibility; precision nutrition; green technology; structure– function relationship

(This special issue belongs to the Section Food Chemistry)

Development of Food Packaging Materials, 2nd Edition

edited by

Michael Kontominas

submission deadline 31 Oct 2026 | 1 articles | Viewed by 34 | 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 Materials Chemistry)

New Research on Novel Photo-/Electrochemical Materials—2nd Edition

edited by

Liangliang Feng

and

Yipu Liu

submission deadline 31 Oct 2026 | Viewed by 24 | 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)

Featured Review in Wine Chemistry

edited by

Fernando M. Nunes

Fernanda Cosme

and

Luís Filipe-Ribeiro

submission deadline 31 Oct 2026 | Viewed by 24 | Submission Open

Keywords: wine chemistry; review; wine flavors; polyphenols; sensory; analytical techniques

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

Phytochemicals and Their Anti-Inflammatory and Antioxidant Properties

edited by

Agnieszka Nawirska-Olszańska

and

Joanna Kolniak-Ostek

submission deadline 31 Oct 2026 | Viewed by 1 | Submission Open

Keywords: bioactive components; plant extracts; functional food; polyphenols; carotenoids; organic acids; vitamins

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

Advances in Alkyne Chemistry

edited by Ruimao Hua

submission deadline 25 Nov 2026 | 7 articles | Viewed by 32339 | Submission Open

Keywords: alkyne annulation; carbocycle synthesis; heterocycle synthesis; atom-economic reaction; synthesis methodology

(This special issue belongs to the Section Organic Chemistry)

30th Anniversary of Molecules—Recent Advances in Materials Chemistry

edited by

Giuseppe Cirillo

Dimitrios Gournis

and Mu-Ping Nieh

submission deadline 30 Nov 2026 | 11 articles | Viewed by 17602 | Submission Open

Keywords: materials chemistry; synthetic procedures; characterization procedures; nanomaterials and nanocomposites; biologically oriented materials and biomaterials; materials of natural origin; hybrid composites; mechanical properties; long-term durability

(This special issue belongs to the Section Materials Chemistry)

Heterophase Polymerization and Functional Polymer Microspheres/Microcapsules

edited by Chengyou Kan and Wei Deng

submission deadline 30 Nov 2026 | 6 articles | Viewed by 11528 | Submission Open

Keywords: emulsion polymerization; mini emulsion polymerization; dispersion polymerization; suspension polymerization; encapsulation; functionalization; polymer microspheres; microcapsules; characterization; morphology control; structure– property relationship; polymer nanocomposite; application

(This special issue belongs to the Section Materials Chemistry)

30th Anniversary of Molecules—Recent Advances in Computational and Theoretical Chemistry

edited by

Maxim L. Kuznetsov

submission deadline 30 Nov 2026 | 7 articles | Viewed by 7941 | Submission Open

Keywords: computational chemistry; quantum chemistry; density functional theory; molecular design; reaction mechanism; chemical bonding; non-covalent interactions; molecular docking

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

Natural Bioactive Compounds: Antioxidant Properties and Associated Biological Activities

edited by

Nguyen Van Quan

submission deadline 30 Nov 2026 | Viewed by 55 | Submission Open

Keywords: natural compounds; bioactive compounds; antioxidant activity; biological activities; chemical analysis; structure-function relationships; advanced extraction methods

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

Organic Supramolecular Nanomaterials in Biomedical Applications: Design, Synthesis, Assembly, and Property Regulation

edited by

Ruilong Sheng

submission deadline 30 Nov 2026 | Viewed by 15 | Submission Open

Keywords: supramolecular nanobiomaterials; biomedical applications; organic supramolecular chemistry; polymer synthesis; bioimaging and biosensing; organic– inorganic hybrid nanomaterials

(This special issue belongs to the Section Organic Chemistry)

Bioactive Compounds in Food and Plants: Phytochemical Analysis, Structural Elucidation, Biological Properties and Therapeutic Potential

edited by

Adele Cutignano

and

Giulia De Simone

submission deadline 30 Nov 2026 | Viewed by 14 | Submission Open

Keywords: medicinal plants; food; food waste; plant by-products; bioactive metabolites and lipids; NMR spectroscopy; mass spectrometry; biological activity

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

Research Advances on New Drugs and Drug Targets in Melanoma

edited by Paula Wróblewska-Łuczka

submission deadline 30 Nov 2026 | Viewed by 11 | Submission Open

Keywords: melanoma; new drugs; drug targets; mechanism of action; substances with anti-melanoma potential

(This special issue belongs to the Section Chemical Biology)

Bioactive Components in Plants: Extraction, Characterization and Antioxidant Activity

edited by

Maria Celeiro

submission deadline 15 Dec 2026 | Viewed by 59 | Submission Open

Keywords: bioactive compounds; plant extracts; extraction of bioactives; polyphenols; chemical characterization; antioxidant activity; green chemistry

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

Characterization of Organic Ligands: Correlations Between Results by Electrochemistry and Other Methods

edited by Eleonora-Mihaela Ungureanu

submission deadline 20 Dec 2026 | 1 articles | Viewed by 759 | Submission Open

Keywords: connections; electrochemical experiments; characterization of organic ligands; DFT calculations of ligand properties; optical methods; electrochemical methods; surface characterization methods (SEM; AFM; Raman; etc.); analytical methods

(This special issue belongs to the Section Applied Chemistry)

30th Anniversary of Molecules: Recent Advances and the Next in Macromolecular Chemistry

edited by

Sylvain Caillol

Hua Wei

Apostolos Avgeropoulos

and

Ying-Wei Yang

submission deadline 31 Dec 2026 | 8 articles | Viewed by 15601 | Submission Open

Keywords: macromolecular chemistry; synthetic polymers; natural polymers; polymerization mechanisms and kinetics; supramolecular self-assembly; biological macromolecules

(This special issue belongs to the Section Macromolecular Chemistry)

The 30th Anniversary of Molecules—Recent Advances in Chemical Biology

edited by

and

submission deadline 31 Dec 2026 | 6 articles | Viewed by 13639 | Submission Open

Keywords: bioorthogonal chemistry; peptides; nucleic acids; proteins; analytical methods; chemical inhibitors; chemical probe; ubiquitination; structure-activity relationship

(This special issue belongs to the Section Chemical Biology)

30th Anniversary of Molecules—Recent Advances in Organic Chemistry

edited by

Maria G. P. M. S. Neves

, Antonia Di Mola and

Nuno M. M. Moura

submission deadline 31 Dec 2026 | 9 articles | Viewed by 13456 | Submission Open

Keywords: organic synthesis; organic chemistry research; theoretical study; reaction mechanisms; catalysis

(This special issue belongs to the Section Organic Chemistry)

30th Anniversary of Molecules—Recent Advances in Inorganic Chemistry

edited by

Axel Klein

Richard Dronskowski

and

Vassilis Tangoulis

submission deadline 31 Dec 2026 | 9 articles | Viewed by 9411 | Submission Open

Keywords: inorganic chemistry; coordination chemistry; solid-state chemistry; nanomaterials; organometallics; transition and main group metal chemistry; catalysis; bioinorganic chemistry

(This special issue belongs to the Section Inorganic Chemistry)

The 30th Anniversary of Molecules—Recent Advances in Natural Products Chemistry

edited by

Daniela Rigano

Maria Camilla Bergonzi

Dimitris P. Makris

and

Kyoko Nakagawa-Goto

submission deadline 31 Dec 2026 | 4 articles | Viewed by 7307 | Submission Open

Keywords: natural compounds; bioactive molecules; drug discovery; pharmacological activity; formulations; drug delivery systems; food applications and additives; cosmetic applications; synthesis

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

30th Anniversary of Molecules—Recent Advances in Analytical Chemistry

edited by

Wilfried Rozhon

Simone Morais

and

Agostinho Almeida

submission deadline 31 Dec 2026 | 2 articles | Viewed by 4898 | Submission Open

Keywords: chromatography and advanced mass spectrometry; atomic spectroscopy and elemental mass spectrometry; molecular spectroscopy; miniaturization of analytical instruments; ohmics; nanomaterials and sensors; automation and high-throughput screening; single-cell analysis; non-invasive analysis/techniques; green analytical chemistry

(This special issue belongs to the Section Analytical Chemistry)

30th Anniversary of Molecules—Recent Developments in Biobased Polymers

edited by

Dimitrios Bikiaris

and

Eleftheria Xanthopoulou

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2662 | Submission Open

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

(This special issue belongs to the Section Materials Chemistry)

30th Anniversary of Molecules: Recent Advances in Organometallic Chemistry

edited by

Zhi-Gang Gu

submission deadline 31 Dec 2026 | 2 articles | Viewed by 2355 | 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 Peptide Assembly and Bioactivity

edited by

Wen Li

submission deadline 31 Dec 2026 | 1 articles | Viewed by 941 | Submission Open

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

(This special issue belongs to the Section Bioorganic Chemistry)

Silymarin and Derivatives: From Biosynthesis to Health Benefits 2.0

edited by

Dominique Delmas

submission deadline 31 Dec 2026 | Viewed by 609 | 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)

Functional Molecules Design for Nutrition Health

edited by

Libing Liu

and

Yu Feng

submission deadline 31 Dec 2026 | Viewed by 79 | 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)

Advances in Lactam Chemistry: From Synthetic Strategies to Biological Applications

edited by

Faïza Diaba

submission deadline 31 Dec 2026 | Viewed by 76 | 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 Remediation Methods of Pharmaceutical Pollutants in Water

edited by

Robert Skibiński

and

Jakub Trawiński

submission deadline 31 Dec 2026 | Viewed by 67 | Submission Open

Keywords: drug pollutants; advanced oxidation processes; water treatment; electrochemical methods; photodegradation; degradation pathways; mineralization; toxicity assessment

(This special issue belongs to the Section Green Chemistry)

Electrochemical Approaches in Bioanalysis: Translational Applications in Medicine and Environmental Monitoring

edited by Mihaela Tertis

submission deadline 31 Dec 2026 | Viewed by 56 | Submission Open

Keywords: electrochemical bioanalysis; sensors and biosensors; nanomaterials and biomimetic-based platforms; point-of-care diagnostics; environmental monitoring

(This special issue belongs to the Section Electrochemistry)

30th Anniversary of Molecules—Recent Advances in Electrochemistry

edited by

Claudio Fontanesi

submission deadline 31 Dec 2026 | Viewed by 53 | Submission Open

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

(This special issue belongs to the Section Electrochemistry)

Synthesis of Innovative and Smart Materials for Batteries

edited by

Laiqiang Xu

and Kangyu Zou

submission deadline 31 Dec 2026 | Viewed by 50 | Submission Open

Keywords: batteries; energy storage; electrodes; materials design; smart functional components

(This special issue belongs to the Section Materials Chemistry)

Recent Advances in Clean and Efficient Coal Separation

edited by

Gan Cheng

Shiwei Wang

and

Ningning Zhang

submission deadline 31 Dec 2026 | Viewed by 26 | Submission Open

Keywords: coal; intelligentization; flotation; gravity separation; dry separation; coal-based materials; coal-based solid waste; interfacial interaction

(This special issue belongs to the Section Green Chemistry)

Coordination Compounds: Synthesis, Structural Characterization and Versatile Biological Applications

edited by

Rodica Olar

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

Keywords: coordination compounds; essential/non-essential metal ions; biological activity; antitumor; antimicrobial; in vitro assays; carrier; inorganic/organic matrix

(This special issue belongs to the Section Inorganic Chemistry)

Recent Trends in Pharmaceutical Analysis for Drug Development, Therapeutic Monitoring and Biomarker Discovery

edited by