Using light to control matter has captured the imagination of scientists for generations, as
there is an abundance of photons at our disposal. Yet delivering photons beyond the surface …

Abstract Ultraviolet (UV, λ< 400 nm) light is essential for various photochemical reactions,
but its intensity in the solar spectrum is very low, and light sources that artificially generate …

Photoredox catalysis relies on light-induced electron transfer leading to a radical pair
comprising an oxidized donor and a reduced acceptor in a solvent cage. For productive …

The utilization of visible light to mediate chemical reactions in fluid solutions has
applications that range from solar fuel production to medicine and organic synthesis. These …

Triplet‐triplet annihilation upconversion (TTA‐UC) with near‐infrared (NIR) photosensitizers
is highly desirable for a variety of emerging applications. However, the development of NIR …

Visible-light-driven photoredox catalysis is known to be a powerful tool for organic synthesis.
Its occurrence critically depends on the twice exothermic single-electron transfer processes …

Research into strong light–matter interactions continues to fascinate, being spurred on by
unforeseen and often spectacular experimental observations. Properties that were …

Photoredox catalysis typically relies on the use of single chromophores, whereas strategies,
in which two different light absorbers are combined, are rare. In photosystems I and II of …

By combining the energy input from two red photons, chemical reactions that would normally
require blue or ultraviolet irradiation become accessible. Key advantages of this biphotonic …

Photocatalysis is a versatile and rapidly develo** field with applications spanning artificial
photosynthesis, photo-biocatalysis, photoredox catalysis in solution or supramolecular …