Visible-Light-Initiated Free-Radical Polymerization by Homomolecular Triplet-Triplet Annihilation
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...
متن کاملTriplet - Triplet Annihilation Upconversion in Solid Materials
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...
متن کاملRobust triplet-triplet annihilation photon upconversion by efficient oxygen scavenging.
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...
متن کاملLight upconverting soft particles: triplet–triplet annihilation in the phospholipid bilayer of self-assembled vesicles
Large unilamellar vesicles (100 nm) were functionalised to obtain supramolecular particles capable of light upconversion in pure aqueous media. Triplet–triplet annihilation of diphenylanthracene (DPA) leading to delayed fluorescence at 420 nm was used to upconvert the light absorbed by embedded metal complex sensitisers. The lipid type and the chromophore position in the membrane affect the TTA...
متن کاملTemperature Dependence of Triplet–Triplet Annihilation Upconversion in Phospholipid Membranes
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 ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chem
سال: 2020
ISSN: 2451-9294
DOI: 10.1016/j.chempr.2020.08.019