A Simple and Versatile Reactor for Photochemistry

Abstract

Safety warning: Any experiment involving flammable organic solvents and air or pure oxygen is potentially hazardous, especially when partially contained, as is the case of the flask of our reactor. We took the following precautions and encountered no problems but we stress the need for readers to make safety assessments for their own experiments as peripheral circumstances may be different from ours. All experiments were carried out in a fume hood or ventilated enclosure with adequate ventilation and the front lowered. Any obvious sources of ignition were removed. Oxygen was fed from a cylinder fitted with a compliant regulator and was delivered at a maintained pressure of 1 bar using a mass flow controller compatible with oxygen. The equipment was maintained and cleaned free of grease at all times to prevent any incompatibilities with oxygen. Temperatures were kept at ambient. When working above the solvent flash point and LOC, care must be taken to ensure that all possible risks have been considered. Appropriate safeguards and suitable safety measures must be implemented.

Improving oxidation efficiency through plasma coupled thin film processing

“…While we explicitly demonstrate this functionality for plasma liquid processing, these observations are equally applicable to other interfacial/ux driven chemical processes, such as electro-or photo-chemical reactions, or reactions at a gas-liquid interface. Photo-redox reactions have been previously demonstrated in the VFD 32,33 and complimentary thin lm devices, 34 and this work provides insights for improving the green chemistry metrics of such processes.…”

Improved Reactor Productivity for the Safe Photo‐Oxidation of Citronellol Under Visible Light LED Irradiation

“…prior to GC analysis. [26] Hence the concentration of hydroperoxides in the liquid was also quantified by determination of the conversion of Ph 3 P.…”

Continuous Flow Photochemistry for the Preparation of Bioactive Molecules

“…In this case substrate solutions are delivered into the rotating flask via the side port of the set-up. LEDs or UV-Vis lamps effectively irradiate the film generated rendering a system that can be run either continuously or semi-continuously based on low budget components that are readily available in research laboratories [28]. Raston and Stubbs recently reported on a vortex fluidic device that comprises a temperature-controlled reactor zone into which the substrate solution can be delivered continuously ( Figure 4).…”