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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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Natural Products with Antiviral, Anti-inflammatory and Immunomodulatory Activities

edited by

Rongtao Li

submission deadline 7 Jul 2025 | 4 articles | Viewed by 11139 | Submission Open

Keywords: antiviral; anti-inflammatory and immunomodulatory activities; rational drug design; structural modification; biotransformation; chemical biology; mechanism

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

Chemical Composition and Anti-Inflammatory Activity of Essential Oils

edited by

Gianfranco Fontana

submission deadline 15 Jul 2025 | 5 articles | Viewed by 7118 | Submission Open

Keywords: essential oils; anti-inflammatory activity; chemo-prevention; natural products; inflammation cascade

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

Deep Eutectic Solvents for the Extraction of Bioactive Compounds from Natural Sources

edited by Kristina Radošević and

Giorgio Grillo

submission deadline 15 Jul 2025 | 1 articles | Viewed by 1283 | Submission Open

Keywords: bioactive compounds; natural sources; biological activity; deep eutectic solvents; green extraction; sustainable solvents; natural product valorization

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

ECSOC-28

edited by

Julio A. Seijas Vázquez

and

M. Pilar Vázquez-Tato

submission deadline 15 Jul 2025 | Viewed by 358 | Submission Open

Keywords: organic synthesis; synthesis of natural products; computational chemistry

Nutritional Properties and Sensory Analysis of Food

edited by

Danuta Kołożyn-Krajewska

Barbara Sionek

and

Aleksandra Szydłowska

submission deadline 15 Jul 2025 | Viewed by 54 | Submission Open

Keywords: sensory evaluation; sensory methods; nutritional value of food; functional ingredients; food safety; texture of food; antioxidant activity; chemical composition

(This special issue belongs to the Section Food Chemistry)

Lipids and Surfactants in Delivery Systems

edited by Agnieszka Lewińska and Marta Domżał-Kędzia

submission deadline 22 Jul 2025 | 2 articles | Viewed by 3060 | Submission Open

Keywords: delivery systems; controlled-release systems; targeted delivery systems; preparation and characterization; surfactant– lipid interactions; lipid and surfactant nanocarriers; bioavailability enhancement; nanotechnology

(This special issue belongs to the Section Nanochemistry)

Unlocking the Formulation Potential of Cyclodextrins and Their Derivatives—2nd Edition

edited by

Georgia N. Valsami

Natassa Pippa

and Paraskevi Papakyriakopoulou

submission deadline 25 Jul 2025 | 5 articles | Viewed by 6663 | Submission Open

Keywords: cyclodextrins; cyclodextrin-drug interactions; formulations; drug loading; release kinetics; routes of administration; in vitro-in vivo evaluation; PK/PD studies

(This special issue belongs to the Section Medicinal Chemistry)

π-Conjugated Functional Molecules & Polymers

edited by

Shiyong Liu

Guangfu Liao

and

Jiabin Qiu

submission deadline 31 Jul 2025 | 15 articles | Viewed by 25587 | Submission Open

Keywords: π -conjugated functional materials; conjugated porous polymers; covalent organic framework; metal– organic framework; synthetic methodology; aggregation-induced organic emissions; nonlinear optics; light-emitting diodes; organic field effect transistors; organic photovoltaic cells; photocatalysis

(This special issue belongs to the Section Materials Chemistry)

Featured Review Papers in Bioorganic Chemistry

edited by

Naresh Kumar

and

Maja Jazvinšćak Jembrek

submission deadline 31 Jul 2025 | 4 articles | Viewed by 24380 | Submission Open

Keywords: bioorganic chemistry; enzyme inhibitors; biocatalysis; biosynthesis; immunochemical techniques; membrane chemistry; peptides chemistry

(This special issue belongs to the Section Bioorganic Chemistry)

Tea Processing and Flavor Research

edited by

Zhonghua Liu

Liang Zhang

and

Yongquan Xu

submission deadline 31 Jul 2025 | 4 articles | Viewed by 13949 | Submission Open

Keywords: processing theory and technology; six types of tea; flavor chemistry; flavor analysis; aroma and flavor perception

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

Novel Two-Dimensional Energy-Environmental Materials

edited by

Guangzhao Wang

, Ning Wang and Xiangkai Kong

submission deadline 31 Jul 2025 | 11 articles | Viewed by 13471 | Submission Open

Keywords: two-dimensional energy materials and heterostructures; solar cells and photodetectors; thermoelectric materials; photocatalysis; electrocatalysis; energy storage materials; environmentally friendly materials; environmental pollution remediation; synthesis and preparation methods

(This special issue belongs to the Section Materials Chemistry)

Applied Chemistry in Europe

edited by

Rosa Iacovino

and Gianluca D'Abrosca

submission deadline 31 Jul 2025 | 5 articles | Viewed by 11915 | Submission Open

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

(This special issue belongs to the Section Applied Chemistry)

Organometallic Compounds: Design, Synthesis and Application

edited by

Yanping Ma

submission deadline 31 Jul 2025 | 10 articles | Viewed by 10403 | 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)

Study on Synthesis and Photochemistry of Dyes

edited by Liang Han

submission deadline 31 Jul 2025 | 7 articles | Viewed by 10112 | Submission Open

Keywords: synthesis of dyes; photochemistry of dyes; organic dyes; functional organic dyes; photo-inducing materials; organic photoelectric materials

(This special issue belongs to the Section Photochemistry)

Current Development of Asymmetric Catalysis and Synthesis

edited by

Jiaxi Xu

submission deadline 31 Jul 2025 | 7 articles | Viewed by 10079 | Submission Open

Keywords: asymmetric synthesis; asymmetric catalysis; transition metal-catalyzed asymmetric catalysis and synthesis; organocatalyzed asymmetric catalysis and synthesis; enzyme-catalyzed catalysis and synthesis; kinetic resolution; theoretical investigations into asymmetric catalysis and synthesis

(This special issue belongs to the Section Organic Chemistry)

Research and Application of Plant Sourced Polysaccharides—2nd Edition

edited by

Xiaolong Ji

and

Xin Wang

submission deadline 31 Jul 2025 | 9 articles | Viewed by 9852 | Submission Open

Keywords: polysaccharide; characterization; structure; physiochemical properties; functional activity

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

Natural Products with Pharmaceutical Activities

edited by

Sokcheon Pak

and

Soo Liang Ooi

submission deadline 31 Jul 2025 | 11 articles | Viewed by 9582 | Submission Open

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

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

Design, Synthesis and Applications of Bioactive Compounds

edited by

Ljubica Glavaš-Obrovac

Maja Molnar

and

Lidija-Marija Tumir

submission deadline 31 Jul 2025 | 6 articles | Viewed by 9137 | Submission Open

Keywords: bioactive compounds; molecular design; synthetic methods; natural products and modification of natural products; in silico drug design; structure– activity relationship; drug discovery; biomedical applications

(This special issue belongs to the Section Medicinal Chemistry)

Analytical Methods for Food and Environmental Pollutants: Current and Future Perspectives

edited by

Julia Martín

and

Esteban Alonso

submission deadline 31 Jul 2025 | 8 articles | Viewed by 8694 | 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)

Analyses and Applications of Phenolic Compounds in Food—2nd Edition

edited by

Monica Rosa Loizzo

Ana Teresa Sanches-Silva

and

Oscar Núñez

submission deadline 31 Jul 2025 | 6 articles | Viewed by 7345 | Submission Open

Keywords: phenolics; extraction; identification; applications in food matrix

(This special issue belongs to the Section Food Chemistry)

Exclusive Papers of the Editorial Board Members and Topical Advisory Panel Members of Molecules in the Section “Applied Chemistry”

edited by

Ioana Demetrescu

and Eleonora-Mihaela Ungureanu

submission deadline 31 Jul 2025 | 7 articles | Viewed by 7043 | Submission Open

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

(This special issue belongs to the Section Applied Chemistry)

Chemistry of Nucleosides and Nucleotides and Their Analogues

edited by

Stefano D’Errico

Nicola Borbone

and

Andrea Patrizia Falanga

submission deadline 31 Jul 2025 | 2 articles | Viewed by 6497 | 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)

Surfactants at the Soft Interfacial Layer

edited by

Chi Phan

submission deadline 31 Jul 2025 | 4 articles | Viewed by 6156 | Submission Open

Keywords: surfactant; water surface; evaporation; emulsion; foaming

(This special issue belongs to the Section Physical Chemistry)

Bioactive Compounds from Foods for Health Benefits

edited by

Sabina Lachowicz-Wiśniewska

submission deadline 31 Jul 2025 | 6 articles | Viewed by 6065 | Submission Open

Keywords: polyphenolic compounds; bioactive compound; natural products; food safety; phytochemicals; carotenoids; LC-MS/MS techniques; HPLC-DAD-MS; fruits; vegetables; and mushrooms; antioxidant compounds; functional food; prebiotics; health beneficial

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

Heterogeneous Catalysis for Sustainability and Carbon-Neutrality

edited by Ruiyang Qu

submission deadline 31 Jul 2025 | 10 articles | Viewed by 6014 | Submission Open

Keywords: heterogeneous catalysis; photocatalysis; electrocatalysis; catalytic materials; renewable energy; sustainable development; carbon-neutrality

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

Bioactive Compounds: Applications and Benefits for Human Health

edited by Sara Baldelli,

Gilda Aiello

and

Mauro Lombardo

submission deadline 31 Jul 2025 | 4 articles | Viewed by 5842 | Submission Open

Keywords: bioactive compounds; polyphenols; terpenoids; alkaloids; glucosinolates; antioxidant; anti-inflammatory; cardiovascular diseases; bacterial and viral infections; microbiota; neurodegenerative diseases; cancer; sarcopenia; identification; purification; extraction; pre-clinical; clinical

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

Boron Chemistry and Applications

edited by Liang Xu and Yu Wei

submission deadline 31 Jul 2025 | 5 articles | Viewed by 5771 | Submission Open

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

(This special issue belongs to the Section Organic Chemistry)

Applications of Fluorescent Sensors in Food and Environment

edited by

Ivan Pietro Oliveri

submission deadline 31 Jul 2025 | 3 articles | Viewed by 5712 | 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)

Recent Advances in Superhydrophobic Materials and Their Application

edited by Chaolang Chen, Shanshan Jia and Lei Chen

submission deadline 31 Jul 2025 | 4 articles | Viewed by 5679 | Submission Open

Keywords: superhydrophobic; bionic surface; self-cleaning; anti-corrosion; oil– water separation; anti-icing and deicing; electronic devices; seawater desalination

(This special issue belongs to the Section Materials Chemistry)

Recent Advances in Functional Composite Materials

edited by

Boon Peng Chang

submission deadline 31 Jul 2025 | 3 articles | Viewed by 5585 | Submission Open

Keywords: functional composites; material innovation; enhanced properties; nanotechnology; smart materials

(This special issue belongs to the Section Materials Chemistry)

Design, Synthesis and Applications of Novel Transition Metal Catalysts

edited by Hui Jiang and Junfang Gong

submission deadline 31 Jul 2025 | 5 articles | Viewed by 5366 | Submission Open

Keywords: pincer catalysts; transition metal catalysts; organic synthetic methodologies; photocatalysis; electrocatalysis; polymerization; fine chemistry

(This special issue belongs to the Section Applied Chemistry)

The Medicinal Value of Natural Products

edited by

Leticia M. Estevinho

submission deadline 31 Jul 2025 | 1 articles | Viewed by 5190 | Submission Open

Keywords: natural products; antioxidants; antimicrobial properties; drug discovery; therapeutics; anti-neoplastic; pharmacognosy

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

Research Progress of Fluorescent Probes

edited by

Yonglei Chen

submission deadline 31 Jul 2025 | 3 articles | Viewed by 5019 | Submission Open

Keywords: one-photon fluorescent probes; two-photon fluorescent probes; multi-photon fluorescent probes; upconverting fluorescent probes; AIE fluorescent probes

(This special issue belongs to the Section Photochemistry)

Cyclization Reactions in the Synthesis of Heterocyclic Compounds

edited by

Yanping Zhu

and Anxin Wu

submission deadline 31 Jul 2025 | 4 articles | Viewed by 4919 | Submission Open

Keywords: heterocyclic compounds; cyclization reactions; cycloaddition reactions; synthetic methodology; diversity and complexity; natural product; photo/electro-catalyzed reactions

(This special issue belongs to the Section Organic Chemistry)

Innovative Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling

edited by Hee-Jeong Choi

submission deadline 31 Jul 2025 | 4 articles | Viewed by 4799 | Submission Open

Keywords: adsorption; heavy metal removal; nanocomposition; photocatalysis; degradation; fabricated materials

(This special issue belongs to the Section Materials Chemistry)

Natural Compounds Derived from Microorganisms: Development, Application and Challenge

edited by Ce Shi and Hongxun Tao

submission deadline 31 Jul 2025 | 3 articles | Viewed by 3911 | Submission Open

Keywords: microorganisms; metabolites; food and feeding industry; pharmacology; healthcare

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

Recent Progress in Biocatalysis and Enzyme Engineering for Manufacturing Pharmaceutical Intermediates

edited by

Yu-Cai He

and

Wei Tang

submission deadline 31 Jul 2025 | 2 articles | Viewed by 3742 | Submission Open

Keywords: biochemical engineering; biocatalysis and biotransformation; biosynthesis and metabolic engineering; bioprocess and biosystem engineering; combination catalysis; synthetic biology approaches

(This special issue belongs to the Section Chemical Biology)

30th Anniversary of Molecules—Recent Advances in Applied Chemistry

edited by

Bhanu P. S. Chauhan

and

Shijun Liao

submission deadline 31 Jul 2025 | 6 articles | Viewed by 3645 | Submission Open

Keywords: applied chemistry; new molecules and natural materials; analytical methods and techniques; electrochemistry and energy; biodegradable materials and medicines; environment and green chemistry; theoretical chemistry

(This special issue belongs to the Section Applied Chemistry)

Featured Reviews in Organic Chemistry 2025

edited by

Roman Dembinski

submission deadline 31 Jul 2025 | 2 articles | Viewed by 3482 | Submission Open

(This special issue belongs to the Section Organic Chemistry)

Recent Advances in Chemical Thermodynamics from Theory to Experiment

edited by

Tao Li

submission deadline 31 Jul 2025 | 3 articles | Viewed by 3193 | Submission Open

Keywords: solution theory; solution chemical thermodynamics; phase equilibrium; thermochemistry; thermal analysis; statistical thermodynamics and molecular simulation; thermodynamic experiment

(This special issue belongs to the Section Physical Chemistry)

Role of Natural Products in Inflammation

edited by

Katarína Bauerová

submission deadline 31 Jul 2025 | 2 articles | Viewed by 3162 | Submission Open

Keywords: inflammation; natural compounds; terrestrial plants; marine plants; NF-kB; hemoxygenase and cyclooxygenase pathways

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

Chemical Technologies for Environmental Analysis and Pollution Removal, 2nd Edition

edited by

Pasquale Iovino

and

Angelo Fenti

submission deadline 31 Jul 2025 | 3 articles | Viewed by 2993 | Submission Open

Keywords: advanced oxidation processes; wastewater treatment; adsorbents; emerging technologies; removal of environmental pollutants; analysis techniques; emerging pollutant

(This special issue belongs to the Section Applied Chemistry)

Pharmacological Effects of Natural Products: Antioxidant, Anti-Inflammatory and Anticancer Activities

edited by

Juan Carlos Sepúlveda-Arias

and Ramón Enrique Robles Zepeda

submission deadline 31 Jul 2025 | 3 articles | Viewed by 2715 | Submission Open

Keywords: natural products; plant extracts; phytochemical inflammatory diseases; oxidative stress; cancer; biological activity; drug discovery

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

Heterocycles: Design, Synthesis and Biological Evaluation, 3rd Edition

edited by

Edward Krzyżak

and

Piotr Świątek

submission deadline 31 Jul 2025 | 5 articles | Viewed by 2669 | Submission Open

Keywords: heterocycles; organic synthesis; drug design; biological activity; medicinal chemistry

(This special issue belongs to the Section Medicinal Chemistry)

Research Progress on Functional Lipids and Their Applications in Health Food Systems

edited by

Zhen Zhang

submission deadline 31 Jul 2025 | 2 articles | Viewed by 2590 | Submission Open

Keywords: lipid crystallization; lipid oxidation; enzymatic lipid modification; processing; health benefits; structured emulsions; lipid emulsions; lipids capsules

(This special issue belongs to the Section Food Chemistry)

Pharmacological Activities of Medicinal Plants

edited by

Pablo Luis B. Figueiredo

and

Joyce Kelly R. Da Silva

submission deadline 31 Jul 2025 | 1 articles | Viewed by 2511 | Submission Open

Keywords: natural products; in vivo models; in vivo assay; pharmacological activities; pain; inflammation; enzyme inhibitory activity

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

Bioactive Compounds from Traditional Medicinal Plants: Extraction, Identification, and Health Implications

edited by

Maria Celeiro

and

Carmen Garcia-Jares

submission deadline 31 Jul 2025 | 2 articles | Viewed by 2294 | Submission Open

Keywords: bioactive compounds; polyphenols; secondary metabolites; traditional medicinal plants; extraction; green chemistry; characterization; health implications

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

An Insight into Medicinal Chemistry of Anticancer Drugs

edited by Gabriela Figueroa-González and

Hernán Cortés

submission deadline 31 Jul 2025 | 1 articles | Viewed by 2206 | Submission Open

Keywords: natural products; anticancer; synthesis; drug resistance; multitargeted therapy

(This special issue belongs to the Section Medicinal Chemistry)

Macrocyclic Cage Molecules and Substances of Chemical/Pharmacological Interest

edited by

Todor Dudev

submission deadline 31 Jul 2025 | 1 articles | Viewed by 2131 | Submission Open

Keywords: macrocyclic cage molecules; cyclodextrins; bambusurils; calixarenes; DFT/ab initio calculations; molecular dynamics simulations; drug delivery

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

Bee Products: Recent Progress in Health Benefits Studies, 2nd Edition

edited by

Maja Jazvinšćak Jembrek