The present review highlights the recent developments in NO-releasing polymeric biomaterials for antimicrobial applications.

In this study,p orphyrinic zirconium (Zr) MOFs were investigated as heterogeneous photocatalysts for photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization of various monomers under abroad range of wavelengths,producing polymers with high monomer conversions,n arrowm olecular weight distributions,l ow dispersity and good chain-end fidelity. Screening of various porphyrinic Zr-MOFs (Zn) containing Zn-metalled porphyrinic ligands demonstrated that MOF-525 (Zn) with the smallest sizeh ad the best photocatalytic activity in PET-RAFT polymerization, due to enhanced dispersion and light penetration. Oxygen tolerance and temporal control were also demonstrated during MOF catalysed PET-RAFT.Results suggested that the polymerization rates were significantly affected by changing the sizea nd surface area of MOFs,a nd the heterogeneous MOF photocatalysts could be easily separated and recycled for up to five independent PET-RAFT polymerizations without an obvious decrease in efficiency. Finally,t he MOF photocatalysts were utilized to create threedimensional polymeric objects with high resolution via visible light mediated stereolithography in an open-air environment.

Hyperbranched random copolymers that consist of ethylhexyl hydrophobic groups have the best selectivity compared to linear random and block copolymers.