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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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Advance in Radiochemistry, 2nd Edition

edited by

Chang-Tong Yang

submission deadline 31 Oct 2025 | 2 articles | Viewed by 1290 | 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)

Recent Advances in Electrochemistry: Analysis and Application

edited by

Xiaolei Sun

and Wenhe Xie

submission deadline 31 Oct 2025 | 1 articles | Viewed by 1270 | Submission Open

Keywords: advanced electrode materials; electrochemical energy storage; bioelectrochemistry applications; nanotechnology in electrochemistry; electrochemical sensors and biosensors; computational electrochemistry; electrochemical water treatment

(This special issue belongs to the Section Electrochemistry)

Supramolecular Host/Guest Compounds and Their Prospects for Multifunctional Materials

edited by Angela Danil De Namor and Nawal Al Hakawati

submission deadline 31 Oct 2025 | 1 articles | Viewed by 1206 | Submission Open

Keywords: supramolecular chemistry; host-guest chemistry; macrocycles and cages; self-assembly; supramolecular materials

(This special issue belongs to the Section Macromolecular Chemistry)

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

edited by

Anna Wołowicz

and

Monika Wawrzkiewicz

submission deadline 31 Oct 2025 | 3 articles | Viewed by 1153 | 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)

Physicochemical Properties of Innovative Food Products During Processing

edited by

Marta Igual Ramo

and

Irene Peñaranda

submission deadline 31 Oct 2025 | 2 articles | Viewed by 1061 | Submission Open

Keywords: physicochemical properties; innovative foods; food processing; quality and stability; functional foods; safety and shelf life; sensory analysis; texture and rheology; bioactive compounds; emerging food technologies; food sustainability; design of food structures

(This special issue belongs to the Section Food Chemistry)

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

edited by

Arik Dahan

and Ludmila Yarmolinsky

submission deadline 31 Oct 2025 | 1 articles | Viewed by 972 | 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)

Metal-Based Molecular Photosensitizers: From Design to Applications

edited by

Yao Sun

submission deadline 31 Oct 2025 | 1 articles | Viewed by 943 | Submission Open

Keywords: photosensitizers; molecular metal complexes; metal-organic complexes; metal-organic frameworks; photodynamic therapy

(This special issue belongs to the Section Organometallic Chemistry)

Feature Papers in Applied Chemistry: 4th Edition

edited by

Shaojun Yuan

submission deadline 31 Oct 2025 | 2 articles | Viewed by 911 | 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)

Design and Preparation of New Metal Catalysts for Functional Organic Compounds Synthesis

edited by

Giorgio Facchetti

submission deadline 31 Oct 2025 | 1 articles | Viewed by 903 | 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)

Advances in Metallocene Chemistry

edited by

Karlheinz Sünkel

submission deadline 31 Oct 2025 | 1 articles | Viewed by 860 | Submission Open

Keywords: metallocene; macromolecular chemistry; bio-organometallic chemistry; catalysis

(This special issue belongs to the Section Organometallic Chemistry)

Biological Activity of Metal Complexes: Design and Characterization Strategies

edited by

Enrique González-Vergara

and

María Eugenia Castro

submission deadline 31 Oct 2025 | 1 articles | Viewed by 855 | 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)

Phenolic and Polyphenolic Compounds: Chemistry, Bioactivity and Applications

edited by Krystian Marszalek and

Justyna Szczepańska-Stolarczyk

submission deadline 31 Oct 2025 | Viewed by 728 | Submission Open

Keywords: fruits and vegetables; functional food; polyphenols; antioxidants; food chemistry and food technology; chromatography; bioavailability and bioaccessibility; innovative and non-conventional techniques

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

Innovative Marine Molecules: Chemistry, Biology and Analysis (Volume II)

edited by

Sérgio Sousa

Ana Gomes

and

Ana P. Carvalho

submission deadline 31 Oct 2025 | Viewed by 725 | Submission Open

Keywords: food (product); marine molecules; chemical structure; isolation and purification; characterization; bioactivity; mechanism of action; analysis methods

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

Essential Oils: Chemical Composition, Bioactive, and Application

edited by

Maria Carla Marcotullio

and Nai-Wen Tsao

submission deadline 31 Oct 2025 | 1 articles | Viewed by 700 | Submission Open

Keywords: essential oils; chemical constituents; biological activities; extraction methods; analytical chemistry; therapeutic effects; antimicrobial activity; drug delivery

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

Exploration and Characterization of Antioxidants from Marine Sources: Isolation, Analysis, and Applications

edited by

Joana Silva

submission deadline 31 Oct 2025 | Viewed by 674 | Submission Open

Keywords: isolation and chemical characterization; structure– activity relationship; marine-derived antioxidants; oxidative stress; in vitro and in vivo models; antioxidant activity; photoprotective activity; antitumural activity; neuroprotection activity; bioavailability and bioaccessibility

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

Redox-Active Molecules as Key Players for Inflammatory Diseases

edited by Ange Mouithys-Mickalad

submission deadline 31 Oct 2025 | Viewed by 659 | Submission Open

Keywords: redox-active Molecules; oxidative stress; inflammatory diseases; QSAR; computer-aided drug design; redox active natural compounds

(This special issue belongs to the Section Medicinal Chemistry)

Catalytic Green Reductions and Oxidations, 2nd Edition

edited by

Zhanhui Yang

submission deadline 31 Oct 2025 | 1 articles | Viewed by 646 | Submission Open

Keywords: green chemistry; redox reactions; organocatalysis; metal catalysis; heterocatalysis; homocatalysis; photocatalysis; electrocatalysis

(This special issue belongs to the Section Organic Chemistry)

Novel Nanomaterials: Sensing Development and Applications

edited by

Peter Feng

and

Andrew F. Zhou

submission deadline 31 Oct 2025 | 1 articles | Viewed by 641 | Submission Open

Keywords: biosensor; nanomaterials; material design; nanocomposite; sensor; sensor applications

(This special issue belongs to the Section Materials Chemistry)

Functional Coordination Compounds: Design, Synthesis and Applications

edited by Ji-Dong Leng and Wei-Quan Lin

submission deadline 31 Oct 2025 | 1 articles | Viewed by 572 | Submission Open

Keywords: coordination compounds; magnetic materials; luminescence; nonlinear optical; stimuli-responsive; catalytic; sensing

(This special issue belongs to the Section Applied Chemistry)

Photocatalytic Generation of Heterocycles

edited by Zuxiao Zhang and

Gianfranco Favi

submission deadline 31 Oct 2025 | Viewed by 562 | Submission Open

Keywords: photocatalytic; cyclization; heterocycles

(This special issue belongs to the Section Organic Chemistry)

Chemical Analysis of Organic Contaminants and Microplastics

edited by

João Pinto da Costa

and

Teresa A. P. Rocha-Santos

submission deadline 31 Oct 2025 | 1 articles | Viewed by 556 | Submission Open

Keywords: environment and food; instrumentation; plastic– organic contaminants interactions; life-cycle assessment; (eco)toxicity

(This special issue belongs to the Section Analytical Chemistry)

Advances in Metal/Oxide Interfacial Catalysts: Design, Properties, and Applications

edited by Mausumi Mahapatra

submission deadline 31 Oct 2025 | 1 articles | Viewed by 462 | Submission Open

Keywords: oxides; metal– oxide interface; catalysts; active sites; heterogeneous catalysis

(This special issue belongs to the Section Physical Chemistry)

Young Talents in Medicinal Chemistry

edited by

Arduino A. Mangoni

and

Chiara Brullo

submission deadline 31 Oct 2025 | Viewed by 437 | Submission Open

Keywords: medicinal chemistry; cancer; drug discovery; drug synthesis; pharmacology; toxicology

(This special issue belongs to the Section Medicinal Chemistry)

Therapeutic Candidates of Inflammation in Chemical Biology

edited by

Sadiq Umar

submission deadline 31 Oct 2025 | Viewed by 425 | Submission Open

Keywords: inflammation; inflammatory-based diseases; immunity; oxidative stress; chemical biology

(This special issue belongs to the Section Chemical Biology)

Design and Synthesis of Novel Adsorbents for Pollutant Removal, 2nd Edition

edited by

Inna V. Melnyk

submission deadline 31 Oct 2025 | 1 articles | Viewed by 415 | Submission Open

Keywords: wastewater treatment; adsorbents; sustainable materials; adsorption mechanisms; surface chemistry; selective adsorption

(This special issue belongs to the Section Physical Chemistry)

Wine Electrochemistry: Science, Technology and Industry

edited by

César Augusto Correia de Sequeira

and

Biljana Šljukić

submission deadline 31 Oct 2025 | Viewed by 367 | Submission Open

Keywords: electrochemical sensors; biosensors; wine; ISFETS; CHEMFETs; electronic tongues; amperometric enzymatic biosensors; phenolic antioxidants electrochemistry; oxidation mechanisms of wines; flow-through electrochemistry; electrochemistry of wine wastewater

(This special issue belongs to the Section Electrochemistry)

Novel Catalysts for Asymmetric Synthesis

edited by

Renata Siedlecka

Mariola Zielińska-Błajet

and

Alejandro Baeza Carratalá

submission deadline 31 Oct 2025 | Viewed by 334 | Submission Open

Keywords: chiral ligands; organometallic complexes; organocatalysts; enantioselectivity; asymmetric induction; catalysis

(This special issue belongs to the Section Organic Chemistry)

Conjugated Polymer-Based Materials: Synthesis, Characterization, and Applications

edited by

Bruno Schmaltz

and Nicolas Berton

submission deadline 31 Oct 2025 | Viewed by 329 | Submission Open

Keywords: conjugated polymers; synthesis; characterization; functional π -conjugated materials; conducting materials; organic electronics; organic electrode materials

(This special issue belongs to the Section Materials Chemistry)

C-H Bond Functionalization of Heterocyclic Compounds

edited by

Dong Wang

submission deadline 31 Oct 2025 | Viewed by 264 | Submission Open

Keywords: heterocycles; C-H activation; transition metal catalysis; site-selectivity; sustainable synthesis; photoredox chemistry; electrochemical functionalization; biologically active molecules

(This special issue belongs to the Section Organic Chemistry)

Microwave- and Ultrasound-Assisted Reactions in Organic Chemistry

edited by

Gheorghita Zbancioc

and

Costel Moldoveanu

submission deadline 31 Oct 2025 | Viewed by 237 | Submission Open

Keywords: microwave- and ultrasound-assisted; synthetic organic chemistry; unconventional methods; biologically active compounds

(This special issue belongs to the Section Green Chemistry)

Application of MOFs Materials in Advanced Oxidation Processes

edited by

Xiaodong Zhang

submission deadline 31 Oct 2025 | Viewed by 237 | Submission Open

Keywords: MOFs; AOPs; VOCs; emerging pollutants; synthesis methods; evaluation techniques

(This special issue belongs to the Section Green Chemistry)

Electrochemical Biosensors: From Design to Application, 2nd Edition

edited by

Jiao Zhai

and

Yanwei Jia

submission deadline 31 Oct 2025 | Viewed by 232 | Submission Open

Keywords: electrochemical sensor; bioanalysis; pathogen detection; healthcare monitoring; food detection

(This special issue belongs to the Section Electrochemistry)

Advances in Modeling and Simulation of Biomolecules

edited by

Haiyang Zhang

submission deadline 31 Oct 2025 | Viewed by 231 | Submission Open

Keywords: molecular dynamics simulations; model parameterization; protein structure and function; protein– ligand interactions; computer-aided drug design; biomolecular association and assembly

(This special issue belongs to the Section Physical Chemistry)

Synthesis, Bioactivity and Structure–Activity Relationship of Natural Products and Their Derivatives

edited by Jelena R. Đorović Jovanović and

Jelena S. Katanic Stankovic

submission deadline 31 Oct 2025 | Viewed by 227 | Submission Open

Keywords: natural products; structure– activity relationship (SAR); semi-synthetic derivatives; bioactivity; drug discovery; therapeutic potential; pharmaceutical innovation; bioactive compound modification

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

Research Advances in Li-Ion Battery Materials: Present and Future

edited by

Li Du

submission deadline 31 Oct 2025 | Viewed by 221 | Submission Open

Keywords: lithium-ion battery; anode materials; cathode materials; characterization

(This special issue belongs to the Section Applied Chemistry)

Polymeric Systems Loaded with Natural Bioactive Compounds, 2nd Edition

edited by

Marcel Popa

and

Cǎtǎlina Anişoara Peptu

submission deadline 31 Oct 2025 | Viewed by 206 | Submission Open

Keywords: polymer– natural drug systems; polyphenols; polymer-drug conjugates; biomaterials; drug delivery; natural bioactive compounds; active targeting; omega 3 fatty acids; carotenoids; vitamins

(This special issue belongs to the Section Materials Chemistry)

Bioproducts for Health, 4th Edition

edited by

María Emilia Brassesco

Ezequiel Coscueta

and

Manuela Pintado

submission deadline 31 Oct 2025 | Viewed by 204 | Submission Open

Keywords: bioactive compounds; health applications; natural sources; purification; downstream processing; sustainability

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

Nanomaterials for the Detection of Biomolecules

edited by

Marcin Godzierz

Krystian Mistewicz

and Rene Pfeifer

submission deadline 31 Oct 2025 | Viewed by 203 | Submission Open

Keywords: nanomaterials; electrochemistry; biological sensors; gas sensors; synthesis; molecule detection

(This special issue belongs to the Section Analytical Chemistry)

Extraction, Chromatography, and Mass Spectrometry Analysis of Food and Plant Biomolecules

edited by

Jorge Pereira

and

Natalia Casado Navas

submission deadline 31 Oct 2025 | Viewed by 166 | Submission Open

Keywords: liquid chromatography; gas chromatography; sample preparation; extraction; supercritical fluid extraction; solid-phase extraction; liquid– liquid extraction

(This special issue belongs to the Section Analytical Chemistry)

Heterocyclic Compounds: Synthesis, Characterization and Biological Evaluation

edited by Hong Dai

submission deadline 31 Oct 2025 | Viewed by 166 | Submission Open

Keywords: heterocyclic compounds; synthesis; biological activity

(This special issue belongs to the Section Organic Chemistry)

Advanced Approaches for Analysis of Food Contaminants and Residues

edited by

Emmanouil Tsochatzis

submission deadline 31 Oct 2025 | Viewed by 164 | Submission Open

Keywords: allergens in foods; antibiotics in food products; endocrine-disrupting substances; food additives; food contact materials; mycotoxins; pesticides; polyaromatic hydrocarbons (PAH); process-induced changes and oxidation products

(This special issue belongs to the Section Analytical Chemistry)

New Insights into High Performance Carbon-Based Electrode Materials

edited by

Yongpeng Cui

and

Chong Xu

submission deadline 31 Oct 2025 | Viewed by 163 | Submission Open

Keywords: carbon materials; energy storage and conversion; battery; supercapacitor; electrode material

(This special issue belongs to the Section Electrochemistry)

Photocatalysis for Organic Pollutants Degradation

edited by

Wanhong Ma

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

Keywords: photocatalytic degradation of organic pollutants in waters; design and preparation of photocatalyst; homo- and heterogeneous photo-catalyzed process; intermediate fragments and intermediate organic pollutants; reactive oxygen species (ROS)

(This special issue belongs to the Section Photochemistry)

Research on Plant-Based Polyphenols: Extraction, Purification and Application

edited by

Thomas Schnabel

and

Thomas Sepperer

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

Keywords: condensed tannin; biopolymers; extraction; circular economy; deep eutectic solvent; hydrolysable tannin; residue valorization

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

Chemical Design of Nanocomposite Materials for Enhanced Electrochemical Performance

edited by

Panpan Dong

and Xingxing Jiao

submission deadline 31 Oct 2025 | Viewed by 153 | Submission Open

Keywords: nanocomposite materials; electrochemical properties; lithium batteries; solid-state electrolytes; interfacial electrochemistry; ionic conductivity; electrode design; theoretical calculations

(This special issue belongs to the Section Electrochemistry)

Advances in Porous Organic Materials: Syntheses, Structures and Applications

edited by Tianqiong Ma, Wankai An and

Ying-Wei Yang

submission deadline 31 Oct 2025 | Viewed by 149 | Submission Open

Keywords: porous organic materials; porous organic polymers (POPs); covalent organic frameworks (COFs); conjugated microporous polymers (CMPs); porous aromatic frameworks (PAFs); polymers of intrinsic microporosity (PIMs); hyper-cross-inked polymers (HCPs); porous organic cages

(This special issue belongs to the Section Materials Chemistry)

Graphene and Graphene-Related Materials for Energy and Environment: Synthesis and Application

edited by

Saverio Latorrata

and

Andrea Basso Peressut

submission deadline 31 Oct 2025 | Viewed by 136 | Submission Open

Keywords: graphene; graphene-related materials; energy applications; fuel cells; capacitors; photocatalysis; adsorption

(This special issue belongs to the Section Materials Chemistry)

Plant Metabolites: Isolation, Phytochemistry, and Biological Activities

edited by

Dagmara Wróbel-Biedrawa

, Karolina Grabowska and

Luca Rastrelli

submission deadline 31 Oct 2025 | Viewed by 135 | Submission Open

Keywords: isolation; plant metabolites; plant extracts; medicinal plants; biological activity assessment

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

Advanced Functional Membrane Materials: Fabrication and Applications

edited by

Heng Mao

submission deadline 31 Oct 2025 | Viewed by 135 | Submission Open

Keywords: functional membrane material; nanochemistry; polymeric synthesis; molecular design; synthesis method; material processing; catalysis and separation

(This special issue belongs to the Section Applied Chemistry)

Design, Synthesis and Biological Activity of Novel Antitumor Drugs, 2nd Edition

edited by