Deconstruction of Polymers through Olefin Metathesis

D Sathe, S Yoon, Z Wang, H Chen, J Wang - Chemical Reviews, 2024 - ACS Publications
The consumption of synthetic polymers has ballooned; so has the amount of post-consumer
waste generated. The current polymer economy, however, is largely linear with most of the …

Proton-triggered topological transformation in superbase-mediated selective polymerization enables access to ultrahigh-molar-mass cyclic polymers

L Zhou, LT Reilly, C Shi, EC Quinn, EYX Chen - Nature Chemistry, 2024 - nature.com
The selective synthesis of ultrahigh-molar-mass (UHMM,> 2 million Da) cyclic polymers is
challenging as an exceptional degree of spatiotemporal control is required to overcome the …

Topology Matters: Conformation and Microscopic Dynamics of Ring Polymers

M Kruteva, J Allgaier, D Richter - Macromolecules, 2023 - ACS Publications
Ring polymers have fascinated theorists, simulators, and experimentalists as they are the
simplest polymer without ends, giving rise to important topology related properties. We …

Metallacyclobuta‐(2, 3)‐diene: A Bidentate Ligand for Stream‐line Synthesis of First Row Transition Metal Catalysts for Cyclic Polymerization of Phenylacetylene

JB Russell, D Konar, TM Keller, MR Gau… - Angewandte …, 2024 - Wiley Online Library
Described here is a direct entry to two examples of 3d transition metal catalysts that are
active for the cyclic polymerization of phenylacetylene, namely,[(BDI) M {κ2‐C, C …

Ancillary Ligand Lability Improves Control in Cyclic Ruthenium Benzylidene Initiated Ring-Expansion Metathesis Polymerizations

AM Levenson, CM Morrison, PR Huang… - ACS Macro …, 2023 - ACS Publications
The synthesis of well-defined cyclic polymers is crucial to exploring applications spanning
engineering, energy, and biomedicine. These materials lack chain-ends and are therefore …

Functionalized Cyclic Polymers and Network Gels

D Konar, VK Jakhar, KA Stewart, DW Lester… - …, 2024 - ACS Publications
Cyclic polymers exhibit different solution and bulk properties compared to their linear
analogs of the same molecular weight, such as smaller hydrodynamic volumes and higher …

Improved Trianionic Pincer Ligand Synthesis for Cyclic Polymer Catalysts

VK Jakhar, YH Shen, SM Hyun, AM Esper… - …, 2023 - ACS Publications
An easier, safer, and scalable approach to the synthesis of a trianionic pincer ligand and its
use in the preparation of the Mo cyclic polymer catalyst [O2C ((p-OMe-C6H4) C═) Mo (η2 …

Ring Expansion Metathesis Polymerization (REMP) Initiators with an Unusual Ancillary Ligand

R Yadav, AM Esper, I Ghiviriga, KA Abboud… - …, 2024 - Wiley Online Library
Tethered tungsten‐alkylidenes bearing azoimido ligands (M≡ Nγ‐Nβ= NαR) are
synthesized, characterized, and tested as initiators for ring expansion metathesis …

A Versatile Cyclic Clickable Platform by Ring-Expansion Metathesis Polymerization: Cyclic Glycopolymers with Lectin-Binding Ability

C Gonnot, M Scalabrini, B Roubinet, Z Oblette… - …, 2024 - ACS Publications
A new versatile cyclic polymer platform for the design of advanced cyclic materials was
prepared by combining ring-expansion metathesis polymerization (REMP) and click …

Molecular Simulations Revealing Effects of Non-concatenated Ring Topology on Phase Behavior of Symmetric Diblock Copolymers

A Wijesekera, DL Vigil, T Ge - Macromolecules, 2024 - ACS Publications
The distinctiveness of nonconcatenated ring polymers, as manifested in their fractal globular
conformations and self-similar dynamics with no long-lived entanglement network, propels …