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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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Phosphorus-Based Compounds in Medicinal Chemistry

edited by

Magdalini Matziari

submission deadline 30 Jan 2026 | Viewed by 254 | Submission Open

Keywords: phosphorus-containing drugs; prodrugs; phosphonates; phosphinates; bioisosteres; enzyme inhibitors; drug design; drug discovery

(This special issue belongs to the Section Medicinal Chemistry)

Phytochemicals as Promising Molecules in Acute and Chronic Neurodegeneration

edited by

Paola Lenzi

submission deadline 30 Jan 2026 | Viewed by 169 | Submission Open

Keywords: phytochemicals; nutrients; morphology; transmission electron microscopy; autophagy; proteasome; neurodegeneration; central nervous system; peripheral nervous system; sensory organs

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

Advances in Nanoscale Drug Delivery Technologies and Theranostics

edited by

Anne-Marie Caminade

and Valérie Maraval

submission deadline 30 Jan 2026 | Viewed by 110 | Submission Open

Keywords: drug delivery; theranostics; nanoparticles; dendrimers; nanovesicle; nanomicelles; polymers; nanomaterials

(This special issue belongs to the Section Nanochemistry)

Advanced Functional Quantum Dots: Design, Properties and Application

edited by

Łukasz Kaczmarek

and

Piotr Zawadzki

submission deadline 30 Jan 2026 | Viewed by 75 | Submission Open

Keywords: quantum dots; functionalization; quantum modelling; novel materials; nanomaterials

(This special issue belongs to the Section Nanochemistry)

Health Benefits and Applications of Bioactive Phenolic Compounds

edited by

Joana Madureira

and

Sandra Cabo Verde

submission deadline 31 Jan 2026 | 5 articles | Viewed by 18315 | Submission Open

Keywords: natural bioactive compounds; health benefits; bioactive properties; extraction methodologies; in vitro and in vivo studies; potential applications

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

Organosulfur and Organoselenium Chemistry II

edited by Ming Wang

submission deadline 31 Jan 2026 | 6 articles | Viewed by 17390 | Submission Open

Keywords: organosulfur; organoselenium; synthesis; transformation; application

(This special issue belongs to the Section Organic Chemistry)

Recent Advances in Natural Compounds Research: Chemistry, Biology and Biotechnology

edited by

Simona Fabroni

Krystian Marszałek

and

Aldo Todaro

submission deadline 31 Jan 2026 | 6 articles | Viewed by 15793 | Submission Open

Keywords: bioactive constituents; phytoextract; biological activity

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

Design and Mechanisms of Photo(electro)catalysts for Water Splitting

edited by Zhaohui Zhou, Jiafeng Geng and

Shichao Zong

submission deadline 31 Jan 2026 | 3 articles | Viewed by 13671 | Submission Open

Keywords: photocatalysis; electrocatalysis; photoelectrocatalysis; photo(electro)catalysts synthesis; water splitting; hydrogen production; renewable fuels

(This special issue belongs to the Section Applied Chemistry)

Analytical Insights into Bioactive Compounds in Pharmaceutical Formulations

edited by

Anna Gumieniczek

submission deadline 31 Jan 2026 | 5 articles | Viewed by 12438 | Submission Open

Keywords: bioactive compounds; drug quality control; new pharmaceutical formulations; advanced analytical techniques; falsified medicines; methodologies

(This special issue belongs to the Section Analytical Chemistry)

Applications of Fluorescent Sensors in Food and Environment

edited by

Ivan Pietro Oliveri

submission deadline 31 Jan 2026 | 4 articles | Viewed by 10262 | Submission Open

Keywords: environmental pollutants; food quality; heavy metals and anions sensing; fluorescent quantum dots; luminescent metal organic frameworks (LMOFs); fluorescent polymers; fluorescent small molecules and supramolecular sensors; vapoluminescent materials

(This special issue belongs to the Section Materials Chemistry)

Chemistry of Nucleosides and Nucleotides and Their Analogues

edited by

Stefano D’Errico

Nicola Borbone

and

Andrea Patrizia Falanga

submission deadline 31 Jan 2026 | 3 articles | Viewed by 10033 | Submission Open

Keywords: nucleosides; nucleotides; and nucleic acids; modified nucleosides and nucleotides; nucleoside and nucleotide analogues; antimetabolites; oligonucleotides; organic synthesis; bioorganic chemistry; medicinal chemistry

(This special issue belongs to the Section Organic Chemistry)

Innovative Anticancer Compounds and Therapeutic Strategies

edited by

Mateusz Kciuk

and Beata Marciniak

submission deadline 31 Jan 2026 | 6 articles | Viewed by 9653 | Submission Open

Keywords: chemical biology; cancer therapeutics; natural compounds; small molecule drug discovery; targeted therapy; high-throughput screening; structure-based drug design; translational research

(This special issue belongs to the Section Medicinal Chemistry)

Chemical Constituents and Biological Activities of Natural Sources

edited by

Míchel Frédérich

and

Anne Bialecki

submission deadline 31 Jan 2026 | 4 articles | Viewed by 8779 | Submission Open

Keywords: natural compounds; biological activities; isolation; identification and structural elucidation; pharmacological evaluation

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

Boron Chemistry and Applications

edited by Liang Xu and Yu Wei

submission deadline 31 Jan 2026 | 5 articles | Viewed by 8665 | Submission Open

Keywords: boron-based materials; boron-based catalysts; boronyl synthons; boron neutron capture therapy

(This special issue belongs to the Section Organic Chemistry)

Molecular Spectroscopy and Molecular Structure in Europe

edited by

Vincent Boudon

submission deadline 31 Jan 2026 | 4 articles | Viewed by 6066 | Submission Open

Keywords: high-resolution molecular spectra; high-resolution experimental techniques; theory of molecular spectra; theory of molecular structure; effective Hamiltonians; quantum chemistry calculations; atmospheric applications; astrophysical applications

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

Influence of Solvent Molecules in Coordination Chemistry

edited by Ingmar Persson

submission deadline 31 Jan 2026 | 5 articles | Viewed by 5605 | Submission Open

Keywords: hydration; solvation; coordination chemistry; chemical property; solid state; aqueous solution; non-aqueous solvents; space demanding at coordination

(This special issue belongs to the Section Inorganic Chemistry)

Multifunctional Crystalline Porous Materials: Design, Synthesis and Applications

edited by Liangliang Zhang

submission deadline 31 Jan 2026 | 4 articles | Viewed by 4968 | Submission Open

Keywords: crystalline porous materials; design; synthesis and applications

(This special issue belongs to the Section Materials Chemistry)

Antibacterial Agents: Present and Future

edited by

Aura Rusu

Livia Uncu

and

Octavia-Laura Oancea

submission deadline 31 Jan 2026 | 1 articles | Viewed by 4478 | Submission Open

Keywords: antibacterial resistance; antibacterials; bacteria; bioactive compounds; drug repositioning; drug repurposing; hybrid antibacterials; Infectious diseases; metal complexes; nanoparticles

(This special issue belongs to the Section Chemical Biology)

Research on Chemical Composition and Activity of Natural Products, 2nd Edition

edited by

Stela Dimitrova

Ana M. Dobreva

and

Petko Denev

submission deadline 31 Jan 2026 | 5 articles | Viewed by 3927 | Submission Open

Keywords: natural bioactive compounds; isolation and analysis; metabolism; in vitro and in vivo experiments; pharmacological study

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

Featured Review on Essential Oils

edited by

Antoni Szumny

submission deadline 31 Jan 2026 | 1 articles | Viewed by 3789 | Submission Open

Keywords: essential oil; aromatic plant; GC-MS; bioactivity

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

Emerging Topics in Luminescent Materials

edited by Dineshkumar Sengottuvelu and Mohammed Majdoub

submission deadline 31 Jan 2026 | 2 articles | Viewed by 3480 | Submission Open

Keywords: luminous materials; light-emitting devices; photoluminescence properties; quantum dots; perovskite LEDs; sensing materials; biomedical devices; photocatalysis

(This special issue belongs to the Section Materials Chemistry)

Design, Synthesis, and Application of Zeolite Materials

edited by Chengyi Dai, Junjie Li, Jiaxing Zhang and Qingrun Meng

submission deadline 31 Jan 2026 | 4 articles | Viewed by 3401 | Submission Open

Keywords: zeolite design; synthetic methodologies; catalytic applications; structure– activity relationships; zeolite nanoscale engineering; interdisciplinary applications; diffusion; selectivity

(This special issue belongs to the Section Applied Chemistry)

Advances in Chemical Research on Biomarkers, Drugs of Abuse, Medicines, and Computational Approaches

edited by

Huixiao Hong

submission deadline 31 Jan 2026 | 2 articles | Viewed by 3081 | Submission Open

Keywords: biomarker discovery; drugs of abuse; therapeutic agents; protein structure analysis; computational drug design; bioanalytical methods; mass spectrometry; molecular dynamics simulations

(This special issue belongs to the Section Medicinal Chemistry)

Synthesis and Derivatization of Heterocyclic Compounds

edited by Philipp Natho and

Marco Colella

submission deadline 31 Jan 2026 | 2 articles | Viewed by 2931 | Submission Open

Keywords: heterocyclic compounds; spirocyclic compounds; enabling technology; synthetic methodologies; strained heterocycles; medicinal chemistry; fused compounds

(This special issue belongs to the Section Organic Chemistry)

Water Electrolysis

edited by Linjing Yang

submission deadline 31 Jan 2026 | 3 articles | Viewed by 2801 | Submission Open

Keywords: electrocatalysts; hydrogen production; water splitting

(This special issue belongs to the Section Electrochemistry)

Crystal Structures of Tricky, Unexpected, Labile or Difficult Molecular Structures by Diffraction Methods

edited by

Marco Milanesio

submission deadline 31 Jan 2026 | 2 articles | Viewed by 2735 | Submission Open

Keywords: molecular structures; single-crystal diffraction; powder diffraction; unexpected reactions; labile compounds; intermediates; crystallography; molecular complexes; multi-technique approaches

(This special issue belongs to the Section Molecular Structure)

Wine Chemistry: From Flavor Profiling to Sensory Quality

edited by

Veronica Sanda Chedea

submission deadline 31 Jan 2026 | 3 articles | Viewed by 2705 | Submission Open

Keywords: wine; volatile organic compounds (VOCs); flavor; aroma; phenolic compounds; chemical composition; sensory; fermentation process

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

Green Chemistry in China: Advancing Sustainable Science for a Better World

edited by

Hui Ding

and Sihui Zhan

submission deadline 31 Jan 2026 | 6 articles | Viewed by 2463 | Submission Open

Keywords: sustainable catalysis; green processes; green energy; green materials; green remediation processes; environmental catalysis; degradation of micropollutants; synthetic biology approaches; enzyme; biocatalysis; normal temperature catalysis; biomimetic catalysis; photocatalysis; solvent-free reactions; process intensification; atomic active site catalysis; biotechnology; carbon neutrality

(This special issue belongs to the Section Green Chemistry)

Green Chemistry Strategies for the Production of Biofuels and Biochemicals from Biomass

edited by

Maryline Abert-Vian

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1983 | Submission Open

Keywords: green chemistry; biomass; biorefinery; bioeconomy; byproduct

(This special issue belongs to the Section Green Chemistry)

Methods and Applications of Cycloaddition Reactions

edited by

Agnieszka Łapczuk

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1941 | Submission Open

Keywords: cycloaddition reactions; organic synthesis; quantum– chemical calculations; cycloaddition in medicinal chemistry; cycloaddition in polymer chemistry; cycloaddition in materials science; bioactive compounds; click chemistry

(This special issue belongs to the Section Organic Chemistry)

New Insights in Electrode Materials for Energy Storage and Electrocatalysis

edited by

Sumanta Sahoo

and

Ganesh Dhakal

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1810 | Submission Open

Keywords: biomass-derived carbon; transitional metal oxides/sulfides; supercapacitor; oxygen evolution reaction (OER); hydrogen evolution reaction (HER); oxygen reduction reaction (ORR)

(This special issue belongs to the Section Electrochemistry)

Advances in Gel Materials: Synthesis, Characterization and Applications

edited by Nina Danchova and

Stoyan Gutzov

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1682 | Submission Open

Keywords: advanced gels; aerogels; hybrid gels; composites; selective sorbents; energy storage; environmental protection; optical materials

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

Advances in Textile Coloration and Finishing for Sustainable and Smart Textiles

edited by

Joonseok Koh

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1666 | Submission Open

Keywords: sustainable dyeing; eco-friendly dyes; functional finishing; smart textiles; green finishing processes

Computational Study and Molecular Modeling in Materials Chemistry

edited by

Andrés Aracena

Osvaldo Yáñez

and Kerry Wrighton-Araneda

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1458 | Submission Open

Keywords: computational materials; materials design; molecular modeling; quantum mechanical calculations; molecular dynamics simulations; molecular properties; molecular interactions

(This special issue belongs to the Section Materials Chemistry)

Synthesis, Crystal Structure, and Application of Schiff Base Complexes

edited by

Beata Cristóvao

and

Agata Bartyzel

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1429 | Submission Open

Keywords: Schiff base; metal complexes; coordination compounds; applications; crystal structure

(This special issue belongs to the Section Organometallic Chemistry)

Advances in Medicinal Chemistry for Age-Related Diseases

edited by

Maria João Matos

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1354 | Submission Open

Keywords: age-related diseases; neurodegenerative diseases; cardiovascular diseases; bioactive molecules; biomolecules; synthesis; computational studies; medicinal chemistry; chemical biology; drug discovery

(This special issue belongs to the Section Medicinal Chemistry)

Advances in Oxide-Based Materials for (Photo)Catalysis

edited by

Dora Alicia Solís-Casados

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1339 | Submission Open

Keywords: oxide-based materials; catalytic materials; synthesis methods; characterization techniques; photocatalysis; heterostructures; sustainable photocatalysis

(This special issue belongs to the Section Photochemistry)

Progress in CO₂ Storage Materials

edited by

Liang Huang

and Tianshan Xue

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1190 | Submission Open

Keywords: carbon capture and storage; mineral carbonation; CO2 sorbents; metal-organic frameworks; porous polymers; catalytic conversion

Rare Earth Luminescent Materials and Complexes: Structure, Properties and Applications

edited by

Joana Zaharieva

Dimitar Todorovsky

and Vladimira S. Videva

submission deadline 31 Jan 2026 | 1 articles | Viewed by 1099 | Submission Open

Keywords: rare earth elements; lanthanide complexes; luminescent materials; photophysical properties; upconversion; downshifting; coordination compounds; hybrid materials; optical materials; bioimaging; photonics; sensing; nanomaterials; structure– property relationships

(This special issue belongs to the Section Photochemistry)

Natural Products with Pharmaceutical Activities, 2nd Edition

edited by

Sokcheon Pak

and

Soo Liang Ooi

submission deadline 31 Jan 2026 | 2 articles | Viewed by 963 | Submission Open

Keywords: bioactive compounds; drug discovery; natural product chemistry; pharmacological evaluation; structure– activity relationship

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

Advances in the Preparation and Application of Cellulose

edited by

Bin Wang

and Chengliang Duan

submission deadline 31 Jan 2026 | 1 articles | Viewed by 805 | Submission Open

Keywords: cellulose; chemical modification; nanofibers; physical modification; biological modification; preparation; application; composite materials

(This special issue belongs to the Section Materials Chemistry)

Recent Advances in Synthesis of Antiviral Compounds

edited by

Roberta Costi

and Francesco Saccoliti

submission deadline 31 Jan 2026 | Viewed by 703 | Submission Open

Keywords: antiviral; drug design; medicinal chemistry; antiviral small molecules; synthesis; synthetic drugs; antimicrobial

(This special issue belongs to the Section Organic Chemistry)

Emerging Trends in Microextraction Techniques for Bioanalytical Applications

edited by

Constantinos K. Zacharis

submission deadline 31 Jan 2026 | 2 articles | Viewed by 592 | Submission Open

Keywords: sorbent-based microextraction (i.e.; solid phase microextraction (SPME); matrix solid phase dispersion (MSPD); pipette-tip micro solid phase extraction; fabric sorptive phase extraction (FPSE); capsule phase microextraction (CPME); stir bar sorptive extraction (SBSE); etc.); liquid-phase microextraction (dispersive liquid– liquid microextraction; single-drop microextraction; electromembrane extraction; etc.); automation; new materials/sorbents (MOF; COFs; nanomaterials; conductive polymers; magnetic materials; etc.); miniaturization in sample preparation

(This special issue belongs to the Section Analytical Chemistry)

From Biodiversity to the Modern Use of Medicinal Plants

edited by

Luigi Menghini

, Raimundo Gonçalves De Oliveira Junior,

Claudio Ferrante

and

Simonetta Cristina Di Simone

submission deadline 31 Jan 2026 | Viewed by 568 | Submission Open

Keywords: rational phytotherapy; phytochemical composition; pharmaco-toxicological evaluation; composition/activity relationship; unexplored plant extract; plant biodiversity

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

Research on Food Packaging Materials: Development of Innovative Polymers and Analytical Characterization

edited by

Nicoletta De Vietro

and

Jolanda Palmisani

submission deadline 31 Jan 2026 | 1 articles | Viewed by 505 | Submission Open

Keywords: food packaging materials; chemical contamination; analytical characterization; food preservative properties; innovative polymers

(This special issue belongs to the Section Materials Chemistry)

Vitrimers and Sustainable Polymers: Pioneering Recycling and Controlled Degradation

edited by

Sylvain Caillol

and Marc Guerre

submission deadline 31 Jan 2026 | Viewed by 492 | Submission Open

Keywords: vitrimers; polymer recycling; debonding technologies; circular economy; controlled biodegradation; sustainable polymers; environmental impact

(This special issue belongs to the Section Macromolecular Chemistry)

Advances in High-Performance Liquid Chromatography and Novel Applications

edited by

Adriana Arigò

Petr Česla

and

Emanuela Trovato

submission deadline 31 Jan 2026 | Viewed by 342 | Submission Open

Keywords: HPLC; mass spectrometry; fundamentals; stationary phase; artificial intelligence; sampling; sample preparation; hyphenation; hyphenated techniques; green chemistry

(This special issue belongs to the Section Analytical Chemistry)

Recent Progress in Advanced Microwave Absorption Materials: Synthesis, Structure and Application

edited by

Yi Hou

and Xiaolin Lan

submission deadline 31 Jan 2026 | Viewed by 330 | Submission Open

Keywords: advanced microwave absorption materials; new methods and design strategies; new preparation and characterization concepts; electromagnetic attenuation mechanism; intelligent/smart and multiple functions

(This special issue belongs to the Section Materials Chemistry)

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

edited by