NIR light-triggered photodynamic antibacterial nanofiber membrane based on polycaprolactone and phthalocyanine derivative for biomedical applications.

Photodynamic therapy (PDT) is gaining recognition as a promising alternative method for the treatment of diverse biomedical applications. Toward this goal, we report herein the fabrication of an electrospun membrane utilizing polycaprolactone (PCL), and a phthalocyanine derivative, namely 1,4,8,11,15,22,25-octabutyloxy-29,31-phthalocyanine (OBuPc). The designed OBuPc-PCL membrane aims to function as a dressing with the potential to facilitate the management of wound healing.

Simple, selective detection and efficient removal of toxic lead and silver metal ions using Acid Red 94.

Toward the goal of detecting toxic elements and removing them from drinking water, we report herein the utilization of Acid Red 94 (AR94) in sensing the hazardous metal ions in water. Among the various examined metal ions (Ag, Pb, K, Mn, Zn, La, Hg, Ca, Cd, Co, and Ni), the UV-visible absorption spectra showed high selectivity and sensitivity for toxic silver and lead metal ions in an aqueous solution. The observed absorption spectral changes and the rapid color changes confirm complex formation between AR94 and both Ag and Pb metal ions.