Other subjects explored include hydrogen bonding effects on the photochemistry of chromophores in solution, photochemical generation of silicon-centered radicals and their reactions, and photochemical processes at the air-water interface of atmospheric droplets.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class of psychoactive drugs. It is the world's most widely consumed psychoactive drug, but unlike many other psychoactive substances, it is legal and unregulated in nearly all parts of the world.
Caffeine is a well-established ergogenic aid/cognitive enhancer, and also happens to be the most widely consumed psychoactive substance in the world. Caffeine causes an increase in catecholamines (adrenaline, noradrenaline, and dopamine), resulting in increased alertness, focus, and perceived energy.