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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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Exclusive Feature Papers in Analytical Chemistry

edited by

João Pinto da Costa

and

Teresa A. P. Rocha-Santos

submission deadline 31 Aug 2025 | 5 articles | Viewed by 1930 | Submission Open

Keywords: analytical chemistry; instrumentation; environment and food; pharmaceutical industry; green chemistry

(This special issue belongs to the Section Analytical Chemistry)

Organic Synthesis of Nitrogen-Containing Molecules

edited by

Guigen Li

and Guofu Zhong

submission deadline 31 Aug 2025 | 2 articles | Viewed by 1859 | Submission Open

Keywords: asymmetric synthesis; N-heterocycles; noncyclic amino compound; amino compound; new synthetic methodologies

(This special issue belongs to the Section Organic Chemistry)

Antioxidant Activity of Plant Phenolics, 2nd Edition

edited by

Dimitrios Kouretas

and

Zoi Skaperda

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1825 | Submission Open

Keywords: antioxidants; plants; phytochemical compounds; polyphenols; oxidative stress; natural products; bioactive compounds; herbs; biomarkers

(This special issue belongs to the Section Natural Products 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 Aug 2025 | 1 articles | Viewed by 1648 | 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)

Advances in Phenolic Based Complexes

edited by

Kiril B. Gavazov

submission deadline 31 Aug 2025 | 2 articles | Viewed by 1620 | Submission Open

Keywords: phenolic compounds; complexes; structure; properties; applications; analysis

(This special issue belongs to the Section Organometallic Chemistry)

Synthesis, Characterization and Application of Photocatalytic Materials

edited by

Tiekun Jia

and

Fei Long

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1438 | Submission Open

Keywords: nanomaterials; nanocomposites; morphology modulation; vacancy engineering; band alignment; atomic modulation; waste water treatment; organic pollutant; water splitting

(This special issue belongs to the Section Photochemistry)

Porous Carbon Materials: Preparation and Application

edited by

Jianxiao Yang

submission deadline 31 Aug 2025 | 4 articles | Viewed by 1427 | Submission Open

Keywords: porous carbon materials; energy storage; environmental science; sensors; adsorption; catalysis

(This special issue belongs to the Section Applied Chemistry)

Design, Synthesis and Biological Evaluation of Novel Small Molecules Inhibitors, 2nd Edition

edited by

Letizia Giampietro

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1318 | Submission Open

Keywords: small molecules; inhibitors; natural products; drug design; synthetic strategies; structure– activity relationship; docking studies; drug delivery; in vivo; in vitro; and ex vivo evaluation; biological activity; molecular mechanisms

(This special issue belongs to the Section Medicinal Chemistry)

Microwave-Assisted Synthesis and Extraction in Green Chemistry

edited by Yusuke Asakuma and Quan V. Vuong

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1313 | Submission Open

Keywords: microwave extraction; synthesis; green chemistry; microwave engineering; microwave radiation effect; microwave extraction of natural products

(This special issue belongs to the Section Green Chemistry)

Emerging Topics in Luminescent Materials

edited by Dineshkumar Sengottuvelu and Mohammed Majdoub

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1313 | 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)

Advances in the Application of Nanoparticles in Antimicrobial Research

edited by

Paulina Laura Páez

and

Maria Luisa Saladino

submission deadline 31 Aug 2025 | 2 articles | Viewed by 1263 | Submission Open

Keywords: nanoparticles; nanobiomaterials; antimicrobial activity; antimicrobial resistance; photodynamic antimicrobial therapy; innovation; drug delivery; sustainability

(This special issue belongs to the Section Nanochemistry)

Chemical Design and Synthesis of Antimicrobial Drugs

edited by Ma Su and

Diana I.S.P. Resende

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1252 | Submission Open

Keywords: antimicrobial drugs; rational design; drug resistance; ESKAPE pathogens; structure– activity relationship; advanced skeleton

(This special issue belongs to the Section Medicinal Chemistry)

Extraction, Isolation, and Identification of Bioactive Compounds from Plants

edited by

Gina Rosalinda De Nicola

and

Sabine Montaut

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1163 | Submission Open

Keywords: natural products; extraction methods; isolation methods; chromatography; chemical characterization; bioactivity; antioxidant; antimicrobial; antiinflammation; bio-guided assay; biopesticides; biostimulants; nutraceuticals

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

Ionic Liquids and Deep Eutectic Solvents in Green Chemistry

edited by Marina Cvjetko Bubalo,

Ivana Radojcic Redovnikovic

and

Ana Jurinjak Tušek

submission deadline 31 Aug 2025 | 1 articles | Viewed by 1052 | Submission Open

Keywords: ionic liquids; deep eutectic solvents; green chemistry

(This special issue belongs to the Section Green Chemistry)

Natural Products Biosynthesis: Present and Perspectives

edited by Dae-Yeon Suh

submission deadline 31 Aug 2025 | 1 articles | Viewed by 924 | Submission Open

Keywords: natural products biosynthesis; secondary metabolism; biosynthetic pathway; enzyme mechanism; synthetic biology; bioinformatics; phylogenomics; genome mining

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

Exclusive Feature Papers on Molecular Structure, 2nd Edition

edited by

Chan Kyung Kim

submission deadline 31 Aug 2025 | 2 articles | Viewed by 628 | Submission Open

Keywords: molecular structure; chemical bonding; molecular clusters; molecular similarity; protein structure prediction; quantum chemistry; spectroscopy; molecular dynamics simulations

(This special issue belongs to the Section Molecular Structure)

Chromatography—The Ultimate Analytical Tool, 3rd Edition

edited by

Victoria Samanidou

and

Natasa Kalogiouri

submission deadline 31 Aug 2025 | 1 articles | Viewed by 525 | Submission Open

Keywords: chromatography; high-performance liquid chromatography; ultra-high-performance liquid chromatography; gas chromatography; two-dimensional gas chromatography; two-dimensional liquid chromatography; paper chromatography; liquid chromatography; preparative chromatography; supercritical fluid chromatography; thin-layer chromatography

(This special issue belongs to the Section Analytical Chemistry)

Application of Chitosan and Hyaluronan

edited by

Katarína Valachová

submission deadline 31 Aug 2025 | 1 articles | Viewed by 479 | Submission Open

Keywords: hyaluronan; chitosan; functionalized hyaluronan and chitosan; hyaluronan and chitosan derivatives; medicinal applications; polysaccharides; reactive oxygen species; tissue engineering; biodegradable; biological properties; medicine; cosmetics; food industry; water treatments

(This special issue belongs to the Section Applied Chemistry)

Mesoporous Materials for Electrochemical Energy Storage

edited by Shuge Dai and

Cunyue Guo

submission deadline 31 Aug 2025 | 1 articles | Viewed by 427 | Submission Open

Keywords: mesoporous materials; energy storage; electrocatalyst; water splitting

(This special issue belongs to the Section Materials Chemistry)

Recent Advances in Proton-Conducting Crystalline Porous Materials

edited by Gang Li and Zhiqiang Shi

submission deadline 31 Aug 2025 | Viewed by 336 | Submission Open

Keywords: metal– organic frameworks (MOFs); covalent– organic frameworks (COFs); hydrogen-bonded organic frameworks (HOFs); porous materials; proton conduction

(This special issue belongs to the Section Materials Chemistry)

Antibody/Peptide–Drug Conjugates: Synthesis and Applications

edited by

Andreas Tzakos

, Xiaochun Hu and Siyao Liu

submission deadline 31 Aug 2025 | Viewed by 330 | Submission Open

Keywords: peptide– drug conjugates; antibody– drug conjugates; peptide-based diagnostics; peptide-based theranostics; rational design; cancer research

(This special issue belongs to the Section Applied Chemistry)

Nuclear Magnetic Resonance Spectroscopy and Mass Spectrometry Techniques in the Discovery of Cancer Biomarkers

edited by

Adrian Arendowski

and

David Aebisher

submission deadline 31 Aug 2025 | Viewed by 309 | Submission Open

Keywords: biomarkers; cancers; diagnostics; mass spectrometry; metabolites; nuclear magnetic resonance; proteins; spectroscopy

(This special issue belongs to the Section Analytical Chemistry)

Methods and Applications of Cycloaddition Reactions

edited by Agnieszka Łapczuk

submission deadline 31 Aug 2025 | Viewed by 227 | 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)

Natural Dyes for the Textile and Leather Industries—for the Future’s Sustainability

edited by

Ricardo Calhelha

Sandrina A. Heleno

and

Isabel P. Fernandes

submission deadline 31 Aug 2025 | Viewed by 224 | Submission Open

Keywords: natural dyes; textile and leather industries; extraction methodologies; pigment characterization; new dye to fiber binding agents and strategies; bioactive properties; industrial applications

(This special issue belongs to the Section Colorants)

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

edited by

Carlotta Breschi

Lorenzo Cecchi

and

Maria Bellumori

submission deadline 31 Aug 2025 | Viewed by 204 | 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)

Design and Application of Hydrogen-Bonded Organic Frameworks (HOFs)

edited by

Peng Li

and Zhangjing Zhang

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

Keywords: hydrogen-bonded organic frameworks; gas storage and separation; catalysis; sensing; drug-delivery; host– guest chemistry; stimulus-responsive behaviors; bio-hybrid organic frameworks; HOF composite materials; crystal structure prediction (CSP)

(This special issue belongs to the Section Materials Chemistry)

Antioxidant, Anti-Inflammatory Activities and Skin Protective Potential of Extractions from Natural Plants

edited by Gerardo Magela Vieira-Júnior and

Paulo Michel Pinheiro Ferreira

submission deadline 31 Aug 2025 | Viewed by 202 | Submission Open

Keywords: antioxidants; anti-inflammatory; skin protection; phenolic compounds; extracts derived from plants; natural products

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

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

edited by

Simona Fabroni

Krystian Marszałek

and

Aldo Todaro

submission deadline 31 Aug 2025 | Viewed by 201 | Submission Open

Keywords: bioactive constituents; phytoextract; biological activity

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

Chemistry and Pediatric Cancer Therapy: Small Molecules and Protein Degraders in Drug Discovery

edited by Gisele Nishiguchi and

Priyanka Samanta

submission deadline 31 Aug 2025 | Viewed by 186 | Submission Open

Keywords: drug design; small molecules; protein; computational medicinal chemistry; anticancer; medicinal chemistry; biomolecular interactions

(This special issue belongs to the Section Medicinal Chemistry)

The Comparative Biochemistry of Wax Esters

edited by

Craig Frank

submission deadline 31 Aug 2025 | Viewed by 180 | Submission Open

Keywords: wax esters; fatty alcohols; water-resistant; long-chain fatty acids; energy storage; antimicrobial comparative biochemistry

(This special issue belongs to the Section Chemical Biology)

Heterogeneous Catalysts: From Synthesis to Application

edited by Milan Kralik

submission deadline 31 Aug 2025 | Viewed by 177 | Submission Open

Keywords: heterogeneous catalyst; acid– base; redox; enzymatic; electrocatalytic; photocatalytic; chemical specialties; characterization methods; mathematical modelling; process design; ecology; safety; economy

(This special issue belongs to the Section Organic Chemistry)

Cyclodextrins—New Fields of Application and Research for the Benefit of Mankind and the Planet

edited by

Susana Santos Braga

submission deadline 31 Aug 2025 | Viewed by 167 | Submission Open

Keywords: biomedical applications of CDs; CD-based targeted delivery; CDs as medicines; CDs in gene delivery; CD-MOFs as responsive materials; CDs in regenerative medicine; CD nanoplatforms for diagnostics; CDs in water purification; CDs in soil amelioration; CDs in precious metal recovery; CDs for light harvesting; CDs for energy storage

(This special issue belongs to the Section Applied Chemistry)

Recent Advances in the Toxicology and Safety of Medicinal Plants and Natural Products

edited by

Elżbieta Studzińska-Sroka

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

Keywords: toxicity of natural compounds and plant extracts; safety of natural products; drug development; in silico modeling; in vitro study; in vivo study

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

Hierarchical Organization in Polymeric and Amphiphilic Self-Assembly

edited by Thi Vo

submission deadline 31 Aug 2025 | Viewed by 145 | Submission Open

Keywords: self-assembly; amphiphile; polymers; computational modeling; synthesis; material design

(This special issue belongs to the Section Macromolecular Chemistry)

Multifunctional Materials for Next-Generation Harvesting, Switching, and Storage Devices

edited by

Helena Braga

submission deadline 31 Aug 2025 | Viewed by 111 | Submission Open

Keywords: thermoelectrics; photovoltaics; quantum batteries; memristors; transistors; batteries; capacitors; ferroelectrics; solid electrolytes

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

Anti-Cancer and Anti-Inflammatory Activity of Medicinal Plants

edited by

Yingtong Di

submission deadline 31 Aug 2025 | Viewed by 107 | Submission Open

Keywords: medicinal plants; anti-cancer activity; anti-inflammatory activity; natural products; modification; derivatives; bioassay

(This special issue belongs to the Section Medicinal Chemistry)

Naturally Inspired Molecules as Inhibitors in Drug Discovery, 2nd Edition

edited by

Alessandra Bisi

and

Federica Belluti

submission deadline 31 Aug 2025 | Viewed by 98 | Submission Open

Keywords: natural products; drug design; privileged structures; enzyme inhibition; bioactive compounds; bioinspired compounds; structure– activity relationship (SAR); biological activity; organic synthesis

(This special issue belongs to the Section Medicinal Chemistry)

Plasma Technology and Biomedical Applications, 2nd Edition

edited by

Dehui Xu

submission deadline 31 Aug 2025 | Viewed by 96 | Submission Open

Keywords: cold atmospheric plasma; non-thermal plasma; reactive species; wound healing; disinfection; hemostasis; dermatological treatment; cancer treatment; molecular mechanism

(This special issue belongs to the Section Applied Chemistry)

Recent Advances in Cardiovascular Drug Discovery and Development, 2nd Edition

edited by

Alicja Nowaczyk

and

Grzegorz Grześk

submission deadline 31 Aug 2025 | Viewed by 95 | Submission Open

Keywords: active cardiovascular compounds; molecular modelling; structural analysis; drug repurposing; synthesis; novel and promising therapeutic options

(This special issue belongs to the Section Medicinal Chemistry)

Recent Advances in Charge-Transfer/Biomimetic Coordination Chemistry – Electrochemistry, Photochemistry, Catalysis, Biological Application and Theory

edited by

Frantisek Hartl

and Martin Pižl

submission deadline 31 Aug 2025 | Viewed by 82 | Submission Open

Keywords: electrochemistry; photochemistry; theoretical calculations; catalysis; biological application; synthesis

(This special issue belongs to the Section Inorganic Chemistry)

Separation Technology and Applications of Functional Natural Products and Pharmaceutical Molecules

edited by Susan L. Bonnet and Chika Ifeanyi Chukwuma

submission deadline 31 Aug 2025 | Viewed by 75 | Submission Open

Keywords: advanced chromatography; green separation technologies; purification techniques; supercritical fluid extraction; membrane filtration; natural products; bioactive compounds; active pharmaceuticals; therapeutic applications; sustainable processes

(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 Aug 2025 | Viewed by 70 | Submission Open

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

(This special issue belongs to the Section Materials Chemistry)

The Chemical Biology of Amyloids in Neurodegenerative Diseases

edited by

Xiaohui Wang

submission deadline 31 Aug 2025 | Viewed by 61 | Submission Open

Keywords: amyloid aggregation; neurodegenerative diseases; anti-amyloid therapeutics; recognition and modulation of amyloid aggregates; amyloid-targeted diagnostics; condensation and liquid– liquid phase separation; amyloid-mediated pathogenesis

(This special issue belongs to the Section Chemical Biology)

5th Anniversary of Applied Chemistry Section

edited by

Shaojun Yuan

submission deadline 31 Aug 2025 | Viewed by 54 | Submission Open

Keywords: applied chemistry; new molecules and natural materials; solar energy and photo-electro-catalysis; analytical methods and techniques; electrochemistry and energy; biodegradable materials and medicines; environment and green chemistry

(This special issue belongs to the Section Applied Chemistry)

Synthesis, Crystal Structure, and Application of Schiff Base Complexes

edited by

Beata Cristóvao

and

Agata Bartyzel

submission deadline 31 Aug 2025 | Viewed by 47 | Submission Open

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

(This special issue belongs to the Section Organometallic Chemistry)

Innovative Chemical Technologies for Rare Earth Element Processing

edited by Yuefei Zhang and Fang Zhou

submission deadline 31 Aug 2025 | Viewed by 43 | Submission Open

Keywords: rare-earth; weathered crust elution-deposited rare-earth ores; leaching; compound leaching agents; intermolecular interaction

Phenotypic Screening for Drug Development and Discovery

edited by Xiang Li

submission deadline 31 Aug 2025 | Viewed by 39 | Submission Open

Keywords: phenotypic screening; drug discovery; target deconvolution; disease models; high-throughput screening; mechanism of action; translational research

(This special issue belongs to the Section Medicinal Chemistry)

Antioxidant, and Anti-Inflammatory Activities of Natural Plants

edited by Zofia Niziol-Lukaszewska and Aleksandra Ziemlewska

submission deadline 31 Aug 2025 | Viewed by 36 | Submission Open

Keywords: antioxidant activities; anti-inflammatory activities; extraction methods; isolation of active compounds; biological activity; cosmetic application; plant extracts; natural compounds

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

Lignocellulosic Biomass III

edited by

Alejandro Rodríguez Pascual

Eduardo Espinosa Víctor

and

Carlos Orestes Martin Medina

submission deadline 1 Sep 2025 | 8 articles | Viewed by 13648 | Submission Open

Keywords: biocomposites; bioeconomy; bioenergy; biofuels; plant biomass; biopolymers; biorefinery; cellulose; wood chemistry; circular economy; lignocellulose conversion; hemicelluloses; lignin; nanocellulose; natural compounds; lignocellulose pretreatment; carbohydrates; biomass valorization

(This special issue belongs to the Section Macromolecular Chemistry)

Metallic Nanoclusters and Their Interaction with Light

edited by