Strong coupling of molecules to the vacuum field of a cavity can modify the potential energy surfaces, opening new photochemical reaction pathways. We theoretically investigate the ultrafast dynamics of molecules confined in optical micro cavities. OCIS codes: 020.5580,270.5580,300.6530

Photochemical reactions of poly(3-butoxythiophene-2,5-diyl) with chloroform under irradiation with light were studied. The reactions were separately carried out under air, oxygen, and nitrogen. The obtained results showed that this reaction belongs to the pseudo-first-order reaction with a rate constant k(obs) of 1.4 x 10(-5) s(-1) at room temperature. The presence or absence of air, oxygen, an...

that the longer the wave-length (the lower the frequency) of the exciting radiation, the greater the amount of energy associated with the same photochemical change in the glass. The straight line relation of the data, indicated in figure 2, is suggestive and requires further investigation. This method of portraying the observations is not entirely free from shortcomings. However, if further res...

The mechanism of the protochlorophyllide (PChlide) photoreduction reaction operating in light-adapted plants and catalyzed by NADPH:protochlorophyllide oxidoreductase B (PORb) has been analyzed by low-temperature fluorescence spectroscopy by using purified barley PORb overexpressed heterologously in Escherichia coli as a fusion protein with the maltose-binding protein. We show that the PORb-cat...

The heat, ultraviolet and rihoflavin-sensitized visible inactivations of taka-amylase A are strongly inhibited by the presence of its substrate. The stabilization of the secondary structure of enzyme protein by the conformation change due to the formation of enzyme-substrate and -product complexes is responsible for the protection of enzyme from the heat inactivation. The photoinactivations are...

A photonically characterized, modular and open-source falling film looping photoreactor is presented as scalable photochemical platform. Simple geometrical resizing enables a linear increase of reaction rates scale up by factor 10.

A photochemical cascade process is reported affording complex pentacyclic scaffolds in high yields from readily available substrates. Flow processing provided reaction control and scalability to generate gram quantities of these intriguing for further studies.

A sample of 0.104 M nicardipine in methanol was photoirradiated with a Philips 400 W UV lamp for 3 h in a photochemical chamber. A total of four major photoproducts were found from the HPLC chromatogram. The same sample was used for taking LC-MS, while eight major photoproducts were observed and the structures elucidated by analyzing the CID patterns of their respective mass spectra. A reaction...