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 …

Conspectus Photon upconversion, the process of converting low-energy photons into high-
energy ones, has been widely applied for solar energy conversion, photoredox catalysis …

Novel approaches to modify the spectral output of the sun have seen a surge in interest
recently, with triplet–triplet annihilation driven photon upconversion (TTA-UC) gaining …

Many CuI complexes have luminescent triplet charge-transfer excited states with diverse
applications in photophysics and photochemistry, but for isoelectronic ZnII compounds, this …

Molecular dimers, oligomers, and polymers are versatile components in photophysical and
optoelectronic architectures that could impact a variety of applications. We present a …

While many studies have been done on triplet–triplet annihilation‐based photon
upconversion (TTA‐UC) to produce visible light with high efficiency, the efficient TTA‐UC …

Triplet–triplet annihilation upconversion (TTA-UC) is an unconventional photophysical
process that yields high-energy photons from low-energy incident light and offers pathways …

Photon energy conversion can be accomplished in many different ways, including the two
opposing manners, down-conversion (ie, singlet fission, SF) and up-conversion (ie, triplet …

The photon upconversion based on sensitized triplet–triplet annihilation (s TTA-UC) is a spin-
flip mechanism exploited to recover the energy stored on dark triplet states in conjugated …

Photon upconversion is a strategy to generate high-energy excitations from low-energy
photon input, enabling advanced architectures for imaging and photochemistry. Here, we …