Recent advances of triplet–triplet annihilation upconversion in solvent-free solid materials

Abstract

Triplet-triplet annihilation upconversion that converts low-energy photons to high-energy photons with an incoherent exciting light source is attracting more and more attention due to the wide applicating potentials on improving...

Triplet‐Triplet Annihilation Upconversion‐Based Photolysis: Applications in Photopharmacology

“…Since both TTET and TTA are Dexter-type energy transfer processes, both chromophores should be within 1 nm, and efficient TTA-UC processes are observed if a good chromophore diffusivity is present in the matrix. [50] Finally, the concentration of UC chromophores, the choice of the media or materials where the UC process occurs, the presence of oxygen, [51,40] the excitation wavelength, and the operating temperature [52] also have an influence on the efficiency of the UC.…”

Triplet–triplet annihilation-based photon upconversion using nanoparticles and nanoclusters

“…To date, numerous sensitizing molecules based on organic metal complexes have been developed for TTA-UC, and several reviews have been published. [8][9][10][11][12][13][14] Similarly, inorganic nanomaterials that are capable of interacting with light across a wide range of wavelengths have gained attention as sensitizing molecules. Theoretical discussions unique to nanomaterials, such as those regarding excitons and efficient energy transfer through triplet transmitters, have been established.…”

Heavy-Atom-Free Triplet–Triplet Annihilation Upconversion in Photo-cross-linked Polymer Poly(ethylene glycol) Diacrylate

“…In contrast, the solid TTA UC systems, with the advantage of effectively blocking oxygen, can operate directly in the atmospheric environment, , making them suitable for potential device integration. As such, there have been extensive attempts to exploit solid-state diffusion TTA UC systems in recent years, including polymer films, semisolid materials, metal–organic frameworks, elastomer-doped matrices, and solid crystals. ,− …”