We report that differences in ring strain enthalpy between cis and trans isomers of sila-cycloheptene provide a driving force for both polymerization and depolymerization via olefin metathesis. A need for new methods to reintroduce the low-strain isomer into the plastic economy inspired the development of a polymerization based on ring-opening/cross-metathesis step polymerization, which afforded perfect

We report the mild functionalization of polystyrene with primary amines and other nitrogen groups through sp3 C-H imination. This process significantly increases hydrophilicity without deterioration of molecular weight or thermal properties, and provides a handle for further covalent modification. This work will enable the upcycling and diversification of commodity polyolefins.

The preparation of recyclable cross-linked polymers by combining biomass-based resources with dynamic covalent bonds is a promising strategy for the preparation of sustainable and recyclable thermosetting materials. In this paper, a biomass-based epoxy resin was synthesized from anisaldehyde, and then a biomass-based polymeric material was prepared by Diels-Alder chemistry. The biomass-based material

Fabrication of controlled supramolecular assembly and establishing the structure-function relationship was of great significance in supramolecular chemistry. Uniform fluorescence supramolecular polymeric vesicles and/or micelles with enhanced photophysical property were elaborately designed and prepared by amphiphilic block polymer hosts bearing pillar[5]arene units, which following the working mechanism

As a natural isoflavone compound, glabridin (GLD) has excellent skin-whitening properties, but its biomedical applications are greatly limited due to its poor water solubility and low skin permeability. In the current work, GLD was complexed with hydroxypropyl-β-cyclodextrin (HP-β-CD) to form a GLD/HP-β-CD inclusion complex that would improve the water solubility and skin permeability by changing the

To be coPolydimethylsiloxanes (PDMS) occupy a special place among polymers due to their unique properties, including the possibility of their easy functionalization. Click chemistry reactions, in particular, the azide-alkyne cycloaddition reaction, are promising for the production of both functional siloxanes and siloxane copolymers, and for cross-linked materials. This review discusses the emergence

The selective ring-opening homo-polymerization of CO2/butadiene-derived lactone monomers has emerged as an appealing approach for synthesizing chemically recyclable polyesters from CO2. Previous research has only concentrated on di-substituted six-membered lactones. In this study, a newly designed tri-substituted six-membered CO2/butadiene-derived lactone monomer, 3,3,6-triethyltetrahydro-2H-pyran-2-one