Recent progress with the application of organic room-temperature phosphorescent materials

Abstract

Organic materials with room-temperature phosphorescence (RTP) emission have attracted extensive attention due to extraordinary properties including long lifetime, large Stokes shift, stimuli-responsiveness and so on, and show bright prospect in...

Achieving Colorful Ultralong Organic Room-Temperature Phosphorescence by Precise Modification of Nitrogen Atoms on Phosphorescence Units

“…Ultralong organic room-temperature phosphorescence (UORTP) has been attracting considerable attention − in past years due to its superiorities of low toxicity and flexible structural modification − and its wide applications in bioimaging/sensing, − encryption/anticounterfeiting, , organic light-emitting diodes, − etc. 1 H -Benzo­[ f ]­indole (Bd), a type of carbazole isomer, has been recognized as an important building block for UORTP materials − since Prof. Bin Liu refined it from commercial carbazole.…”

In situ supramolecular assembly in water for dual room temperature phosphorescence and multicomponent recognition

“…35,36,41 Consequently, there are usually two approaches to encouraging RTP, one is promoting the ISC, and the other is providing a rigid microenvironment to suppress the nonradiative transition of the triplet excitons. 29,31,[42][43][44][45] Up to now, constructing hydrogen bonding microenvironments is a potential strategy to enhance ISC and suppress nonradiative energy dissipation of organic phosphors. 46 For example, polymer matrices with multiple hydrogen bonding sites are usually used to facilitate RTP emission.…”

Thia[n]helicenes with long persistent phosphorescence

“…25 Despite some progress in helicene-based emitters, phosphorescent helicenes remain relatively scarce, especially helicenes with exceptionally long s p . Leveraging their unique electronic properties and intrinsic chirality, the development of helicene-based phosphors with ultra-long s p promises to not only broaden the scope of helicene applications but also enrich the palette of organic phosphorescent materials suitable for diverse uses, including room temperature applications (such as encryption and biological imaging), [27][28][29][30] temperature-dependent applications (luminescence thermometry and surface icing detection), and chiroptical applications. [31][32][33][34][35][36][37] In light of these considerations, we have undertaken the design of a series of helicenes featuring the DTT fragment annulated with varying numbers of benzene rings (Fig.…”