Copper phthalocyanine-conjugated pectin via the Ugi four-component reaction: An efficient catalyst for CO fixation.

Due to the cost-effectivity and biodegradability advantages of pectin, this type of polysaccharide attracted the attention of many researchers for catalyst construction. Accordingly, pectin was used as a green support in this study to construct an efficient heterogeneous catalytic system based on the conjugation of metal phthalocyanines. To end this, pectin was first oxidized with periodate oxidant agent to effectively immobilize a tetra-amino copper phthalocyanine (Cu-PcTA) through a green, simple, and an efficient one-pot Ugi four-component reaction (Ugi-4CR).

Carboxymethyl cellulose/tetracycline@UiO-66 nanocomposite hydrogel films as a potential antibacterial wound dressing.

Designing an antibacterial agent with a suitable water vapor permeability, good mechanical properties, and controlled antibiotic release is a promising method for stopping bacterial infection in wound tissue. In this respect, this work aims to prepare novel flexible polymeric hydrogel films via integrating UiO-66 into the polymeric carboxymethyl cellulose (CMC) hydrogel for improving the mechanical and antibiotic release performances. First, we performed a green hydrothermal synthetic method to synthesis UiO-66 and followed by encapsulating Tetracycline (TC) through immersion in its aqueous solution.