INTERSYSTEM CROSSING AND LOWEST TRIPLET STATES OF 4-CHROMANONE, CHROMONE, AND FLAVONE

Reverse Intersystem Crossing from a Triplet State of Rose Bengal

36 LLE Review, Volume 77 Photodynamic therapy is a treatment in which the combination of a dye, light, and oxygen causes photochemically induced cell death. Observations of this effect occurred at least as early as the end of the last century. In 1900, Raab reported that the dye acridine rapidly killed paramecia when exposed to light, but had no effect in the dark.1 This observation quickly ins...

The lowest singlet and triplet States of the oxyallyl diradical.

Simultaneous Observation of Triplet and Singlet Cyclopentane-1,3-diyl Diradicals in the Intersystem Crossing Process

Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan. Japan Science and Technology Agency (JST)-CREST, K’s Gobancho, 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan. Department of Materials Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki Gosyo Kaidoc...

Nanomagnetic control of intersystem crossing.

A theory is presented for how magnetic nanostructures can catalyze intersystem crossing in molecular radical pairs. Magnetic field gradients near physically realistic nanostructures are strong enough to induce a relative reorientation of two electronic spins in <1 ns, overwhelming nuclear hyperfine coupling as a driver of intersystem crossing. Nanomagnetic control of intersystem crossing repres...

The Intersystem Crossing to and the

The observed exponential phosphorescence decay of pyrazlne In cyclohexane or benzene matrix at 77K, with lifetime of 18 millisec, is found to change into a complex decay below 10'%:. At 1.6K, the decay is resolved Into three first-order decays of lifetimes 6, 130 and 400 millisec. These lifetimes are sensitive to changes in temperature and magnetic field strength (Hall, Armstrong, Moomaw and El...