In this study, we present the synthesis and analysis of a novel, air-stable, and solvent-resistant phosphaalkene switch. Using this symmetric switch, we have demonstrated degenerate photoisomerizatio...

From classrooms to laboratories and conferences, working in chemistry presents huge challenges to disabled, chronically ill and neurodivergent people. Some simple fixes can help to shift the dial.

Fluorescent nanoparticles have become attractive for bioanalysis and imaging, due to their high brightness and photostability. Many different optical materials have been applied in fluorescent nanopar...

Benzo[b]phosphole oxides are important P-heterocycles that find applications in optoelectronics due to their inherent photophysical properties. Traditional routes for the synthesis of such molecules f...

Methylene blue acts as a photocatalyst in the presence of biologically relevant electron donors, enabling red-light conversion of two Pt(IV) complexes into cisplatin and oxaliplatin. Spectroscopy and...

In an effort to keep undergraduate chemical education at pace with contemporary interest in photochemical methodologies, we have identified a straightforward system for which steady-state photochemical kinetics may can be tracked via in situ UV–vis spectroscopy: an aqueous solution of methylene blue and ascorbic acid. Under red-light illumination, methylene blue forms a highly oxidizing excited state which is reduced by ascorbic acid, resulting in the colorless leucomethylene blue and the loss of methylene blue spectral features. Using a laser diode of steady output power, the quantum yield of the photoreaction was experimentally determined to be Φrxn = 0.106─indicating that about one in ten absorbed photons results in a productive reaction in this system. Φrxn is a critical metric in developing efficient photochemical reactions. The reaction was then used as a chemical actinometer to measure the power of an inexpensive red laser pointer and LED. These facile experiments can be employed in analytical and physical chemistry courses to expose students to important photochemical concepts through the familiar lens of UV–vis spectroscopy.

We recently demonstrated that suitably functionalised aryliminopyrazoles can exhibit useful photoswitching properties. This study investigates the photoswitching potential of iminobispyrazoles (IBPs)....