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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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Essential Oils—Third Edition

edited by

Laura De Martino

submission deadline 31 Dec 2025 | 5 articles | Viewed by 7290 | Submission Open

Keywords: essential oils; volatile organic compounds (VOCs); chemical fingerprinting; isoprenoids; gas chromatography-mass spectrometry (GC-MS); nuclear magnetic resonance (NMR) spectroscopy; physiological functions of essential oils in plants; molecular mechanisms of essential oils; in vitro and in vivo bioactivities; antimicrobial agents; anti-infective properties; antioxidant potential; allelopathic interactions; biosynthetic pathways; extraction techniques

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

Nanostructured Materials: Synthesis, Functionalization and Applications in Biomedicine—2nd Edition

edited by

Ying-Jie Zhu

Heng Li

and Hanping Yu

submission deadline 31 Dec 2025 | 5 articles | Viewed by 7202 | Submission Open

Keywords: nanostructured materials; biomaterials; dental materials; biomedicine; biomedical applications; drug delivery; bone defect repair; orthopedic surgery; skin wound healing; anti-tumor; biosensing; bioimaging; diagnosis; therapy

(This special issue belongs to the Section Nanochemistry)

Heterocyclic Chemistry with Applications (Second Edition)

edited by Hachemi Kadri and

Fawaz Aldabbagh

submission deadline 31 Dec 2025 | 4 articles | Viewed by 6946 | Submission Open

Keywords: heterocycles; medicinal chemistry; natural products; organic synthesis; synthetic methods; drug discovery; nucleosides; biologically active heterocycles

(This special issue belongs to the Section Organic Chemistry)

Food Bioactive Components in Functional Foods and Nutraceuticals

edited by

Maria Aspri

Dimitrios Tsaltas

and

Vlasios Goulas

submission deadline 31 Dec 2025 | 4 articles | Viewed by 6861 | Submission Open

Keywords: functional foods; nutraceuticals; bioactive compounds; health benefits; disease prevention; bioavailability

(This special issue belongs to the Section Food Chemistry)

Anticancer Natural Products

edited by Zongtao Tom Lin

submission deadline 31 Dec 2025 | 3 articles | Viewed by 6733 | Submission Open

Keywords: anticancer; drug discovery; chemical biology; natural products; analytical methods; bioactive compounds; cancer therapy

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

Synthesis, Modification and Application of Heterocyclic Compounds

edited by

Xinwei He

and Yongjia Shang

submission deadline 31 Dec 2025 | 5 articles | Viewed by 6711 | Submission Open

Keywords: heterocyclic compounds; synthesis; modification; asymmetric catalysis; cyclization; natural products

(This special issue belongs to the Section Organic Chemistry)

Virgin Olive Oil: Processing, Byproducts, Quality Control, and Nutraceutical Profile—3rd Edition

edited by

Carlotta Breschi

Lorenzo Cecchi

and

Maria Bellumori

submission deadline 31 Dec 2025 | 3 articles | Viewed by 6553 | Submission Open

Keywords: virgin olive oil quality authentication; byproduct management; volatile compounds; phenolic compounds; sensory analysis; health-promoting properties; biological activity; authentication of origin; innovative extraction processes

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

Synthesis and Applications of Natural Polymers and Their Derivatives

edited by

Misu Moscovici

Guibin Wang

and

Alejandro Rodríguez Pascual

submission deadline 31 Dec 2025 | 3 articles | Viewed by 6153 | Submission Open

Keywords: biological synthesis; semisynthetic derivatives; polysaccharides and polyhydroxyalkanoates; fungal proteins; processing techniques; composites; nanoparticles; biomedical; pharmaceutical; drug delivery systems; food protection applications

(This special issue belongs to the Section Macromolecular Chemistry)

Synthesized and Functionalized Nanoparticles in Natural Compounds

edited by

Federica Valentini

submission deadline 31 Dec 2025 | 2 articles | Viewed by 6038 | Submission Open

Keywords: nanoparticles; green synthesis; two step-based mechanism growth for nanostructures; template synthetic approach; essential oil (EO); functionalized nanoparticles; shape factor (SF); antibacterial features; cytotoxicity properties; cultural heritage reparation; drug delivery and discovery; nano-carrier in biotechnologies

(This special issue belongs to the Section Materials Chemistry)

(Mass Spectrometric) Non Target Screening–Techniques and Strategies: Volume II

edited by

Thomas Letzel

submission deadline 31 Dec 2025 | 4 articles | Viewed by 6003 | Submission Open

Keywords: mass spectrometric non-target screening; NTS workflows; NTS strategies; NTS techniques (separation; ionization; detection); HPLC; SFC; GC; CE; HRMS; MS/MS; NTS software solutions; NTS open access software; NTS data evaluation; NTS and quality management

(This special issue belongs to the Section Analytical Chemistry)

Innovative Technologies for Functional Foods Development

edited by

Maria Ciudad-Mulero

Patricia Morales

and

Virginia Fernández-Ruiz

submission deadline 31 Dec 2025 | 3 articles | Viewed by 5918 | Submission Open

Keywords: nutraceuticals; functional foods; plant ingredients; phytochemicals; health claims; in vitro and in vivo studies

(This special issue belongs to the Section Food Chemistry)

Advanced Oxidation/Reduction Processes in Water Treatment

edited by Fuxiang Tian and Yuqiong Gao

submission deadline 31 Dec 2025 | 4 articles | Viewed by 5781 | Submission Open

Keywords: advanced oxidation processes; advanced reduction processes; disinfection byproducts; hybrid treatment processes; micropollutant removal; emerging contaminant removal

(This special issue belongs to the Section Green Chemistry)

Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition

edited by

Andrea Bencini

Vito Lippolis

and

Matteo Savastano

submission deadline 31 Dec 2025 | 5 articles | Viewed by 5780 | Submission Open

Keywords: coordination chemistry; metal complexes; metal-based assemblies; inorganic anions; inorganic materials; coordination polymers; functional materials; chemosensors

(This special issue belongs to the Section Inorganic Chemistry)

Feature Papers in Photochemistry and Photocatalysis—2nd Edition

edited by

Barbara Bonelli

submission deadline 31 Dec 2025 | 6 articles | Viewed by 5751 | Submission Open

Keywords: photocatalytic processes; quantum yield; solar light; upconversion; heterojunctions

(This special issue belongs to the Section Photochemistry)

Biomass Materials in Materials Chemistry: Preparation and Characterization, 2nd Edition

edited by

Caiqin Qin

submission deadline 31 Dec 2025 | 3 articles | Viewed by 5590 | Submission Open

Keywords: biomass material (including chitosan; chitin; starch; and biomass waste); catalyst; food packing; coating and film; adsorption

(This special issue belongs to the Section Materials Chemistry)

Chemical Profiling of Plant Extracts with Antioxidant Activity: Identification of Bioactive Compounds

edited by

Marcos Soto-Hernández

submission deadline 31 Dec 2025 | 2 articles | Viewed by 5571 | Submission Open

Keywords: flavonoids; phenolic acids; terpenoids; anthocyanins; antioxidant activity; chemical profiling

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

New Sights in Nanomaterials for Photoelectrochemistry

edited by Yibo Yan

submission deadline 31 Dec 2025 | 2 articles | Viewed by 5528 | Submission Open

Keywords: photoelectrochemical catalysis; photoelectrochemical cells; photoelectrochemical sensors; photoelectrochemical characterizations; photoelectrochemical conversion; photoelectrochemical transformations; optoelectronic devices; photoelectrochemical CO2 reduction

(This special issue belongs to the Section Nanochemistry)

Chemistry and Health: Nitrogen Heterocycle Chemistry and Medicinal Chemistry, 2nd Edition

edited by

Costel Moldoveanu

submission deadline 31 Dec 2025 | 4 articles | Viewed by 5496 | Submission Open

Keywords: heterocycles; azines; azoles; anticancer; anti-tuberculosis; antimicrobial; growth factors

(This special issue belongs to the Section Medicinal Chemistry)

Phytochemical Investigation of Bioactive Constituents from Medicinal Plants

edited by

Agnieszka Szewczyk

and

Inga Kwiecien

submission deadline 31 Dec 2025 | 3 articles | Viewed by 5446 | Submission Open

Keywords: primary metabolites; secondary metabolites; biological activity; phytochemistry; natural products; HPLC-analysis; spectral analysis; medicinal plants

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

Corrosion Electrochemistry: A Themed Issue in Honor of the Many Contributions of Prof. Dr. Changjian Lin

edited by Jiming Hu and Guozhe Meng

submission deadline 31 Dec 2025 | 6 articles | Viewed by 5427 | Submission Open

Keywords: corrosion electrochemistry; corrosion and protection; anti-corrosion coatings; electrochemical test

(This special issue belongs to the Section Electrochemistry)

Advances in Photocatalytic Degradation of Organic Pollutants

edited by Qianqian Liu, Quan Zhang and

Jing Ding

submission deadline 31 Dec 2025 | 3 articles | Viewed by 5320 | Submission Open

Keywords: photocatalysis; photocatalytic degradation of organic pollutants; functional materials; semiconductor photocatalysts; DFT

(This special issue belongs to the Section Green Chemistry)

Inorganic Chemistry in Europe 2025

edited by

Wolfgang Weigand

and

Sotiris K Hadjikakou

submission deadline 31 Dec 2025 | 4 articles | Viewed by 5274 | Submission Open

Keywords: inorganic chemistry (main group and transition metal chemistry); coordination and organometallic chemistry; bioinorganic chemistry; sustainable catalysis and green chemistry; nanotechnology and smart materials; energy storage and conversion; metallodrugs and imaging agents; computational chemistry and AI in material science

(This special issue belongs to the Section Inorganic Chemistry)

Small-Molecule Drug Design and Discovery

edited by Qiuqin He

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4991 | Submission Open

Keywords: small-molecule drug design; structure-based drug design; fragment-based drug discovery; PROTAC technology; artificial intelligence technology; biological evaluation

(This special issue belongs to the Section Medicinal Chemistry)

Exclusive Contributions by the Editorial Board Members (EBMs) of the Inorganic Chemistry Section of Molecules 2025

edited by

Athanassios C. Tsipis

submission deadline 31 Dec 2025 | 6 articles | Viewed by 4909 | Submission Open

Keywords: inorganic chemistry; coordination chemistry; main-group chemistry; bioinorganic chemistry; solid-state chemistry; organometallic compounds; inorganic cluster chemistry; metal-based assemblies; inorganic anions; inorganic materials; theoretical inorganic chemistry

(This special issue belongs to the Section Inorganic Chemistry)

Women’s Special Issue Series: Molecules

edited by

Laura Zaccaro

Simona Golič Grdadolnik

Li Du

and

Mariana Ghica

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4882 | Submission Open

Keywords: organic chemistry; medicinal chemistry; natural products chemistry; inorganic chemistry; physical chemistry; material chemistry; chemical biology; analytical chemistry; supramolecular chemistry; theoretical chemistry; green chemistry; photochemistry

Synthesis and Applications of Nanoparticles and Multifunctional Nanocomposites

edited by

Alexandru Mihai Grumezescu

Florian V. Dumitrache

and Iulia Ioana Lungu

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4807 | Submission Open

Keywords: nanoparticles; nanocomposites; synthesis; multifunctional platforms

(This special issue belongs to the Section Nanochemistry)

Bioactive Molecules in Foods: From Sources to Functional Applications

edited by

Anna Jakubczyk

Kamila Rybczyńska-Tkaczyk

and

Katarzyna Lisiecka

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4784 | Submission Open

Keywords: food compounds; biological activity; nutrition; health; food products; diet supplementary

(This special issue belongs to the Section Food Chemistry)

Innovative Chemical Pathways for CO₂ Conversion

edited by

Guillermo Díaz Sainz

and Juqin Zeng

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4768 | Submission Open

Keywords: CO2 conversion; chemical reactions; CO2 utilization; CO2 reduction; green chemistry; sustainable chemistry; CO2 recycling; carbon neutrality; renewable energy; carbon footprint reduction; environmental impact; carbon-based fuels; sustainable processes; climate change mitigation; CO2 emissions; energy transition

(This special issue belongs to the Section Green Chemistry)

The Design, Synthesis, and Biological Activity of New Drug Candidates, 2nd Edition

edited by Carolina S. Marques,

Pedro Brandão

and

Anthony J. Burke

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4666 | Submission Open

Keywords: bioactive; in silico; in vitro; in vivo; ADMET; synthesis; privilege scaffold; active pharmaceutical ingredients

(This special issue belongs to the Section Medicinal Chemistry)

Bioactive Compounds and Antioxidant Activity of Extracts from Natural Plants, 2nd Edition

edited by

Aleksandra Sentkowska

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4610 | Submission Open

Keywords: bioactive compounds; natural plant products; antioxidant activity; extraction methods; polyphenols; flavonoids

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

Plant Volatile Organic Compounds: Extraction, Characterization and Biological Activities

edited by

Ana Lima

and

Elisabete Maria de Castro Lima

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4376 | Submission Open

Keywords: plant volatile organic compounds; biosynthesis and emission; essential oils; biological activities; green extraction; omics technologies; circular bioeconomy

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

Determination, Adsorption and Degradation Mechanisms of Environmental Pollutants

edited by Alina Catrinel Ion

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4371 | Submission Open

Keywords: environmental pollutants; adsorption mechanisms; degradation pathways; analytical techniques; nanomaterials; heavy metals; organic contaminants

(This special issue belongs to the Section Green Chemistry)

Between Solid-State NMR and Nanoscience—a Long Journey with Great Perspectives: A Themed Issue in Honor of Professor Jacek Klinowski

edited by Leszek Stobinski and

Teobald Kupka

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4305 | Submission Open

Keywords: solid-state NMR; NMR; zeolites; ordered carbon nanostructures; MOFs; mathematics in crystallography

(This special issue belongs to the Section Physical Chemistry)

Active Ingredients in Functional Foods and Their Impact on Health, 2nd Edition

edited by

Anna Puścion-Jakubik

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4296 | Submission Open

Keywords: functional foods; active ingredients; bioactive compounds; health impact; nutraceuticals; dietary patterns; personalized nutrition

(This special issue belongs to the Section Food Chemistry)

Vibrational Spectroscopy and Imaging for Chemical Application

edited by

Barry K. Lavine

and

Karl Booksh

submission deadline 31 Dec 2025 | 4 articles | Viewed by 4291 | Submission Open

Keywords: Raman spectroscopy; infrared spectroscopy; Raman image analysis; infrared image analysis; chemometrics; multiway analysis; multivariate curve resolution; alternating least squares; multivariate image analysis; classification; machine learning

(This special issue belongs to the Section Analytical Chemistry)

Design, Synthesis, and Catalytic Applications of Metal Complexes

edited by

Mei Wang

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4290 | Submission Open

Keywords: metal complex; metal-based material; catalysis: electrocatalysis; photocatalysis; thermocatalysis

(This special issue belongs to the Section Applied Chemistry)

Discovery of Microbial Natural Products

edited by

Yun Kwon

and

Sang-Jip Nam

submission deadline 31 Dec 2025 | 3 articles | Viewed by 4171 | Submission Open

Keywords: microbial natural products; determination of structure; microorganism; drug candidate; bioactive secondary metabolites; microbial biotechnology

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

Cross-Coupling and Related Reactions: Past and New Reactions for the Future

edited by

Viktor Iaroshenko

and Satenik Mkrtchyan

submission deadline 31 Dec 2025 | 1 articles | Viewed by 4004 | Submission Open

Keywords: C-C- cross coupling reactions; C-C bond formation by transition metal catalysis; C-C bond formation by organocatalysis; C-C bond formation by photoredox catalysis; C-C bond formation by enzymatic catalysis; sustainability; green chemistry; new trends in C-C bond formation

(This special issue belongs to the Section Organic Chemistry)

Ionic Liquids and Deep Eutectic Solvents in Catalysis: Current Status and Future Outlook

edited by

Ignacio López-Coca

and Peter A. Goodrich

submission deadline 31 Dec 2025 | 2 articles | Viewed by 3968 | Submission Open

Keywords: ionic liquids; deep eutectic solvents; green chemistry; catalysis; sustainable synthesis; homogeneous catalysis; heterogeneous catalysis; enzymatic catalysis; microwave irradiation; ultrasonic activation

(This special issue belongs to the Section Green Chemistry)

Low-Dimensional Nanomaterials: Chemical Functionalization and Advanced Applications

edited by

Lin Wang

and

Jing Li

submission deadline 31 Dec 2025 | 3 articles | Viewed by 3815 | Submission Open

Keywords: low-dimensional materials; nanomaterials; surface characterization; chemical functionalization; surface spectroscopy; interface engineering; two-dimensional materials; surface modification; nanotechnology; surface reactivity

(This special issue belongs to the Section Materials Chemistry)

Solar Energy Conversion and Information Interpretation Based on Novel Nanotechnologies

edited by

Ming-Yu Li

and

Sisi Liu

submission deadline 31 Dec 2025 | 2 articles | Viewed by 3687 | Submission Open

Keywords: catalytic materials and applications; solar cells; photodetection; materials synthesis and characterizations; materials theory and principles; nanostructures and nanomaterials; optoelectronic materials; photovoltaics photocatalysis materials; plasmonics and applications; sensors and applications

(This special issue belongs to the Section Materials Chemistry)

Advances in Natural Products and Their Biological Activities—2nd Edition

edited by

Irwin Rose Alencar Menezes

Henrique Douglas Melo Coutinho

, Roseli Barbosa and Francisco Assis Bezerra Da Cunha

submission deadline 31 Dec 2025 | 3 articles | Viewed by 3594 | Submission Open

Keywords: phytochemical; natural product; phytotherapy; medicinal plants; biological activity; pharmaceutical formulations; biological activity; pharmacological or toxicology effects

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

Exploring the Therapeutic Potential of Natural Antioxidants

edited by

Dong Wook Shin

submission deadline 31 Dec 2025 | 3 articles | Viewed by 3591 | Submission Open

Keywords: oxidant stress; antioxidants; age; age-related disease; natural plants; polyphenol; fermentation

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

Synthesis of Nanomaterials and Their Applications in Biomedicine—2nd Edition

edited by

Nefeli Lagopati

submission deadline 31 Dec 2025 | 1 articles | Viewed by 3257 | Submission Open

Keywords: nanomaterials; biomaterials; synthesis; characterization; diagnosis; treatment; cytotoxicity; biocompatibility

(This special issue belongs to the Section Materials Chemistry)

Advances in Natural Fiber Composites

edited by

Pietro Russo

submission deadline 31 Dec 2025 | 1 articles | Viewed by 3243 | Submission Open

Keywords: natural fibers; polymer composites; natural fiber-reinforced polymers; heterogeneous structures; complex interfaces

(This special issue belongs to the Section Macromolecular Chemistry)

Magnetic Targeted Nanomaterials and Applications in Drug Delivery and Diagnostics

edited by

Athanasios Skouras

Sophia G. Antimisiaris

and

Alexandru Mihai Grumezescu

submission deadline 31 Dec 2025 | 3 articles | Viewed by 3153 | Submission Open

Keywords: magnetic targeting; theranostics; drug delivery; nanomaterials; magnetic hyperthermia

(This special issue belongs to the Section Nanochemistry)

Insight into Electrochemical and Photocatalysis/Photoelectrochemical Hydrogen Evolution

edited by

Yanxin Chen

submission deadline 31 Dec 2025 | 2 articles | Viewed by 3130 | Submission Open

Keywords: hydrogen evolution reactions (HER); hydrogen production; electrocatalysts (electrocatalysis); photocatalysts (photocatalysis); photoelectrochemical (PEC); energy conversion; (nano)materials

(This special issue belongs to the Section Materials Chemistry)

Intermolecular Interaction Predictions for Large Molecular Systems

edited by

Shuhua Li

and Wei Li

submission deadline 31 Dec 2025 | 2 articles | Viewed by 2994 | Submission Open

Keywords: intermolecular interactions; low scaling quantum chemistry; machine learning; experimental techniques; computational predictions

(This special issue belongs to the Section Physical Chemistry)

Innovations in Metal–Organic Frameworks: Their Synthesis, Properties and Multifaceted Applications

edited by

Francis Verpoort

and

Cheng-Xing Cui

submission deadline 31 Dec 2025 | 2 articles | Viewed by 2962 | Submission Open

Keywords: MOFs; heterogeneous catalysis; storage; adsorption; photocatalysis; fluorescent sensors; electronic devices

(This special issue belongs to the Section Materials Chemistry)

BODIPYs: State of the Art and Future Perspectives

edited by

Jorge Bañuelos Prieto

and

Edurne Avellanal-Zaballa

submission deadline 31 Dec 2025 | 2 articles | Viewed by 2959 | Submission Open

Keywords: BODIPYs; spectroscopy; synthesis; quantum mechanics; tunable laser; bioimaging; photodynamic therapy; optoelectronics

(This special issue belongs to the Section Colorants)

Displaying special issue 151-200 on page 4 of 23.

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