Nikos Hadjichristidis
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View article: Can five chemically different lamellar crystals self-assemble in a single spherulite?
Can five chemically different lamellar crystals self-assemble in a single spherulite? Open
Semicrystalline polymers with multiple crystallizable blocks provide opportunities to develop materials with hierarchical structures and customized properties, but they also pose unique challenges for understanding their crystallization. I…
View article: Organocatalytic Ring-Opening Polymerization of Methyl-Substituted Glycolides
Organocatalytic Ring-Opening Polymerization of Methyl-Substituted Glycolides Open
Aliphatic polyesters derived from the ring-opening polymerization (ROP) of cyclic esters offers access to sustainable, depolymerizable, and renewable materials. Herein, we report the first organocatalytic ROP of dimethyl glycolide (DMG) an…
View article: Effect of Polyisoprene Microstructure on the Thermodynamics, Viscoelastic, and Dielectric Properties in the Bulk and during Flow in Nanopores
Effect of Polyisoprene Microstructure on the Thermodynamics, Viscoelastic, and Dielectric Properties in the Bulk and during Flow in Nanopores Open
View article: A General and Mild Two‐Step Strategy Using Bioderived Diols and CO<sub>2</sub> for Chemically Recyclable Polycarbonates and Closed‐Loop CO<sub>2</sub> Fixation
A General and Mild Two‐Step Strategy Using Bioderived Diols and CO<sub>2</sub> for Chemically Recyclable Polycarbonates and Closed‐Loop CO<sub>2</sub> Fixation Open
Developing chemically recyclable polymers using CO 2 and sustainable co‐feedstocks is an important strategy for achieving carbon‐neutral production of new polymers and mitigating plastic pollution. Herein, a series of six‐membered cyclic c…
View article: A General and Mild Two‐Step Strategy Using Bioderived Diols and CO<sub>2</sub> for Chemically Recyclable Polycarbonates and Closed‐Loop CO<sub>2</sub> Fixation
A General and Mild Two‐Step Strategy Using Bioderived Diols and CO<sub>2</sub> for Chemically Recyclable Polycarbonates and Closed‐Loop CO<sub>2</sub> Fixation Open
Developing chemically recyclable polymers using CO 2 and sustainable co‐feedstocks is an important strategy for achieving carbon‐neutral production of new polymers and mitigating plastic pollution. Herein, a series of six‐membered cyclic c…
View article: Coassembly of Pro-Labile Polymers and MOFs toward Tunable Hierarchy and Functionality
Coassembly of Pro-Labile Polymers and MOFs toward Tunable Hierarchy and Functionality Open
View article: In Situ Growth of Robust 2D ZIF‐67 MOF in Block Copolymer Membranes for Ultrafast Molecular Degradation
In Situ Growth of Robust 2D ZIF‐67 MOF in Block Copolymer Membranes for Ultrafast Molecular Degradation Open
Membrane‐based advanced oxidation processes (AOPs) rely heavily on the configuration of membrane structures and catalysts. However, designing state‐of‐the‐art membrane structures integrated with tailored catalysts for efficient AOPs remain…
View article: Formation of Metastable Structures during Confined Crystallization of Poly(<scp>l</scp>-lactide) in Poly(isoprene-<i>b</i>-<scp>l</scp>-lactide) Diblock Copolymer and Their Influence on Phase-Separated Morphology
Formation of Metastable Structures during Confined Crystallization of Poly(<span>l</span>-lactide) in Poly(isoprene-<i>b</i>-<span>l</span>-lactide) Diblock Copolymer and Their Influence on Phase-Separated Morphology Open
View article: Chain dynamics in polyisoprene stars with arms linked by dynamic covalent bonds to the central core
Chain dynamics in polyisoprene stars with arms linked by dynamic covalent bonds to the central core Open
Model systems incorporating dynamic covalent bonds, like star-shaped polymers, are ideal for gaining insights into the role played by the bond exchange in the dynamics.
View article: Inverse Vulcanization of Aziridines: Enhancing Polysulfides for Superior Mechanical Strength and Adhesive Performance
Inverse Vulcanization of Aziridines: Enhancing Polysulfides for Superior Mechanical Strength and Adhesive Performance Open
This study introduces a novel approach to inverse vulcanization by utilizing a commercially available triaziridine crosslinker as an alternative to conventional olefin‐based crosslinkers. The model reactions reveal a self‐catalyzed ring‐op…
View article: Segmental and Chain Dynamics of Polyisoprene-Based Model Vitrimers
Segmental and Chain Dynamics of Polyisoprene-Based Model Vitrimers Open
Polymer vitrimers are a new class of materials that combine the advantages of thermoplastics and thermosets. This is due to the dynamic nature of the chemical bonds linking different chains. However, how this property affects the polymer d…
View article: Dynamic Covalent Chemistry of Enamine‐Ones: Exploring Tunable Reactivity in Vitrimeric Polymers and Covalent Organic Frameworks
Dynamic Covalent Chemistry of Enamine‐Ones: Exploring Tunable Reactivity in Vitrimeric Polymers and Covalent Organic Frameworks Open
Dynamic covalent chemistry (DCC) has revolutionized the field of polymer science by offering new opportunities for the synthesis, processability, and recyclability of polymers as well as in the development of new materials with interesting…
View article: Amphiphilic block copolymers of poly(vinylidene fluoride) and poly(ethylene glycol)
Amphiphilic block copolymers of poly(vinylidene fluoride) and poly(ethylene glycol) Open
Amphiphilic block copolymers of poly(ethylene glycol) (PEG) and poly(vinylidene fluoride) (PVDF) were successfully synthesized by growing poly(vinylidene fluoride) on PEG‐chain transfer agent (PEG‐macro‐CTA) using reversible addition–fragm…
View article: Knoevenagel C═C Metathesis Enabled Glassy Vitrimers with High Rigidity, Toughness, and Malleability
Knoevenagel C═C Metathesis Enabled Glassy Vitrimers with High Rigidity, Toughness, and Malleability Open
Thermosets, characterized by their permanent cross-linked networks, present significant challenges in recyclability and brittleness. In this work, we explore a polarized Knoevenagel C═C metathesis reaction for the development of rigid yet …
View article: Boron‐Catalyzed C1 Copolymerization of Arsonium and Sulfoxonium Ylides toward Unrepresented Structures and Fluorescence Properties
Boron‐Catalyzed C1 Copolymerization of Arsonium and Sulfoxonium Ylides toward Unrepresented Structures and Fluorescence Properties Open
The first synthesis of well‐defined poly(methylene‐ co ‐1,1‐diphenylpropenenylene) (C1‐ co ‐C1’), equivalent to poly(ethylene‐ co ‐diphenylbutadiene) copolymers was accomplished by C1 copolymerization of novel diphenylpropenyl triphenyl ar…
View article: Boron‐Catalyzed C1 Copolymerization of Arsonium and Sulfoxonium Ylides toward Unrepresented Structures and Fluorescence Properties
Boron‐Catalyzed C1 Copolymerization of Arsonium and Sulfoxonium Ylides toward Unrepresented Structures and Fluorescence Properties Open
The first synthesis of well‐defined poly(methylene‐ co ‐1,1‐diphenylpropenenylene) (C1‐ co ‐C1’), equivalent to poly(ethylene‐ co ‐diphenylbutadiene) copolymers was accomplished by C1 copolymerization of novel diphenylpropenyl triphenyl ar…
View article: Catalyst‐Free α‐Acetyl Cinnamate/Acetoacetate Exchange to Enable High Creep‐Resistant Vitrimers
Catalyst‐Free α‐Acetyl Cinnamate/Acetoacetate Exchange to Enable High Creep‐Resistant Vitrimers Open
Vitrimers represent an emerging class of polymeric materials that combine the desirable characteristics of both thermoplastics and thermosets achieved through the design of dynamic covalent bonds within the polymer networks. However, these…
View article: Model Polyisoprene Vitrimers
Model Polyisoprene Vitrimers Open
Vitrimers are an important class of cross-linked polymers that behave as conventional thermosets at low temperatures and exhibit viscoelastic liquid behavior at high temperatures. The currently available vitrimers are far to be well-define…
View article: Interpenetrated and Bridged Nanocylinders from Self-Assembled Star Block Copolymers
Interpenetrated and Bridged Nanocylinders from Self-Assembled Star Block Copolymers Open
The design of functional polymeric materials with tunable response requires a synergetic use of macromolecular architecture and interactions. Here, we combine experiments with computer simulations to demonstrate how physical properties of …
View article: Catalyst switch strategy enabled a single polymer with five different crystalline phases
Catalyst switch strategy enabled a single polymer with five different crystalline phases Open
Well-defined multicrystalline multiblock polymers are essential model polymers for advancing crystallization physics, phase separation, self-assembly, and improving the mechanical properties of materials. However, due to different chain pr…
View article: Microscopic Evidence for the Topological Transition in Model Vitrimers
Microscopic Evidence for the Topological Transition in Model Vitrimers Open
In addition to the glass transition, vitrimers undergo a topological transition from viscoelastic liquid to viscoelastic solid behavior when the network rearrangements facilitated by dynamic bond exchange reactions freeze. The microscopic …
View article: Influence of chain topology on gel formation and direct ink printing of model linear and star block copolymers with poly(ethylene oxide) and poly(ε-caprolactone) semi-crystalline blocks
Influence of chain topology on gel formation and direct ink printing of model linear and star block copolymers with poly(ethylene oxide) and poly(ε-caprolactone) semi-crystalline blocks Open
In this work, a set of well-defined linear triblock copolymers and star block copolymers (3 and 4-arms) with semi-crystalline blocks consisting of poly(ethylene oxide) (PEO) and poly(ε-caprolactone) (PCL), synthesized by combining ring-ope…
View article: Poly(lactic acid) stereocomplexes based molecular architectures: Synthesis and crystallization
Poly(lactic acid) stereocomplexes based molecular architectures: Synthesis and crystallization Open
This review presents the state of the art of complex macromolecular architectures based on polylactide stereocomplexes (PLA-sc) from the viewpoint of synthesis and crystallization. First, we discuss the nomenclature, synthesis, epimerizati…
View article: Strong and Ultra‐tough Ionic Hydrogel Based on Hyperbranched Macro‐Cross‐linker: Influence of Topological Structure on Properties
Strong and Ultra‐tough Ionic Hydrogel Based on Hyperbranched Macro‐Cross‐linker: Influence of Topological Structure on Properties Open
The application of hydrogels often suffers from their inherent limitation of poor mechanical properties. Here, a carboxyl‐functionalized and acryloyl‐terminated hyperbranched polycaprolactone (PCL) was synthesized and used as a macro‐cross…
View article: Defining Morphological Transformations of “Soft Nature” Diblock Viscoelastic Structured Polymers
Defining Morphological Transformations of “Soft Nature” Diblock Viscoelastic Structured Polymers Open
Structured diblock copolymer liquids consisting exclusively of “soft” segments with glass-transition temperatures well below room temperature have not been studied extensively in the literature in terms of self-assembly properties to date.…
View article: In Memory of Lew Fetters (1936–2023)
In Memory of Lew Fetters (1936–2023) Open
ADVERTISEMENT RETURN TO ISSUEEditorialNEXTIn Memory of Lew Fetters (1936–2023)Nikos Hadjichristidis*Nikos HadjichristidisMore by Nikos Hadjichristidis, Jimmy MaysJimmy MaysMore by Jimmy Mays, and Roderic P. QuirkRoderic P. QuirkMore by Rod…
View article: Living/Controlled Anionic Polymerization of Glycolide in Fluoroalcohols: Toward Sustainable Bioplastics
Living/Controlled Anionic Polymerization of Glycolide in Fluoroalcohols: Toward Sustainable Bioplastics Open
Ring-opening polymerization (ROP) is a promising approach to accessing well-defined polyesters with superior (bio)degradability and recyclability. However, the living/controlled polymerization of glycolide (GL), a well-known sustainable mo…
View article: Rhodamine B-Conjugated Fluorescent Block Copolymer Micelles for Efficient Chlorambucil Delivery and Intracellular Imaging
Rhodamine B-Conjugated Fluorescent Block Copolymer Micelles for Efficient Chlorambucil Delivery and Intracellular Imaging Open
The clinical development of the anticancer drug chlorambucil (CHL) is limited by its low solubility in water, poor bioavailability, and off-target toxicity. Besides, another constraint for monitoring intracellular drug delivery is the non-…
View article: Two-Photon Excitation Photoredox Catalysis Enabled Atom Transfer Radical Polymerization
Two-Photon Excitation Photoredox Catalysis Enabled Atom Transfer Radical Polymerization Open
In recent years, metal-free photoredox-catalyzed atom transfer radical polymerization (O-ATRP) has gained wide attention because of its advantages (e.g., no metal contamination and mild reaction conditions). However, this traditional one-p…
View article: In Situ Formation of Silica Nanoparticles Decorated with Well-Defined Homopolymers and Block Copolymers
In Situ Formation of Silica Nanoparticles Decorated with Well-Defined Homopolymers and Block Copolymers Open
Grafting non-polar polymer chains on the surface of polar nanoparticles (e.g., silica) is an effective way to enhance particle/matrix interactions and thus promote their homogeneous dispersion within a non-polar matrix, which leads to impr…