Triplet-Triplet Annihilation Upconversion Based on Silica Nanoparticles
نویسندگان
چکیده
منابع مشابه
Photon Upconversion through Triplet-Triplet Annihilation
The sun is the only renewable energy source that can accommodate humanity’s energy needs today and in the foreseeable future. The sunlight reaching the planet’s surface is filtrated through the atmosphere, reducing its UV-light intensity in the 300-400 nm range, which indeed can be harmful to life as we know it in too large doses. However, many useful photoreactions require in practice such hig...
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Upconversion is the observation of high energy photon emission from low energy photon absorption. 1 Among the multiple upconversion mechanisms, one that has drawn recent interest is triplet-triplet annihilation (TTA). TTA holds significant advantages over its upconversion counterparts including its use of simple, tunable molecules and its ability to operate under low intensity, non-coherent lig...
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Understanding the temperature dependency of triplet-triplet annihilation upconversion (TTA-UC) is important for optimizing biological applications of upconversion. Here the temperature dependency of red-to-blue TTA-UC is reported in a variety of neutral PEGylated phospholipid liposomes. In these systems a delicate balance between lateral diffusion rate of the dyes, annihilator aggregation, and ...
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We hereby present a simple method for reducing the effect of oxygen quenching in Triplet-Triplet Annihilation Upconversion (TTA-UC) systems. A number of commercially available thioethers and one thiol have been tested as singlet oxygen scavengers. Recording of the upconverted emission from a well-studied PdOEP (sensitizer)-DPA (annihilator/emitter) couple has been made over time with steady-sta...
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Transitioning to a future society, independent of fossil fuels, will definitely require the use of solar radiation for power and fuel production. Due to energy mismatch between device absorption and the broad band irradiation provided by the sun there are severe limitations to how efficient devices for direct conversion of solar radiation can be. One way to better use the solar radiation would ...
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ژورنال
عنوان ژورنال: Acta Chimica Sinica
سال: 2019
ISSN: 0567-7351
DOI: 10.6023/a18090374