Making light work

Light bulb

Source: © Nick Purser/Ikon Images

It’s hard to not get excited about electronically excited states

Photochemical reactions have been happening for as long as light and matter have existed. And while chemists have been studying these reactions in earnest since the 19th century, it’s only more recently that they’ve been making the most of them. Today, using light as an energy source for chemical reactions has never been so vital.