Evaluation of the Role of [{Cu(PMDETA)}(O )] in Open-Air Photo ATRP of Methyl Methacrylate.

Herein, we report an open-air, photo accelerated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) without employing any deoxygenating agent. Under open-air photo ATRP conditions, oxygen reversibly binds with [{Cu (PMDETA)}(O )] to form the required activator, which was demonstrated by simple benchtop oxygen/nitrogen purging experiments. The binding mode of oxygen in (μ(η-η) peroxo dicopper(II)) was investigated using UV Visible-NIR, FT-Raman and X-ray photoelectron (XPS) spectroscopic techniques.

Natural catalyst for luminol chemiluminescence: application to validate peroxide levels in commercial hair dyes.

Here, we report a hydrothermally treated green leaves (Moringa oleifera) extract exploited as an efficient and highly sensitive catalyst to catalyze the chemiluminescence (CL) reaction of luminol. In the absence of enhancer, this green and hydrothermally treated catalyst was found to significantly enhance the CL intensity ~3.5-fold compared with the traditionally used K Fe(CN) catalyst.