Highly efficient organic long persistent luminescence based on host–guest doping systems

Zhao, Yunhan; Ding, Bingbing; Huang, Zibin; Ma, Xiang

doi:10.1039/d2sc01622b

Cited by 27 publications

(13 citation statements)

References 44 publications

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“…It should be emphasized that the free electron carriers diffusion caused by concentration is a slow process, which determines that the luminescence through the CS and CR processes must be LPL emission, [ 29 ] and the emission follows a power‐law decay. [ 30 ]…”

Section: Resultsmentioning

confidence: 99%

Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Electron Donor‐Acceptor Binary System

et al. 2023

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Organic long‐persistent luminescence (OLPL) based on long‐lived charge‐separated (CS) states shows considerable emission persistence time owing to the ability to store absorbed photon energy. Herein, a novel electron donor‐acceptor (D–A) binary system consisting of electron donor 4,4,4‐tris[3methylphenyl(phenyl)amino]triphenylamine and electron acceptor tris‐[3‐(3‐pyridyl)mesityl]borane is designed and investigated for outstanding OLPL performance. It is found that the proposed binary system exhibits effective OLPL emission that lasted for more than 100 s after 1 min of ultraviolet light irradiation at room temperature (292 K). Moreover, this electron D–A binary system also exhibits thermally activated delayed fluorescence emission prior to OLPL emission. Both emission types are found to be temperature‐sensitive, which are believed to result from the occurrence of reverse intersystem crossing and the formation of a CS state, respectively. The findings enrich the electron D–A system OLPL materials and clarify the rich excited‐state transitions during OLPL emission of electron D–A systems.

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Section: Resultsmentioning

confidence: 99%

Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Electron Donor‐Acceptor Binary System

et al. 2023

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“…[22][23][24][25][26] Host-guest doping of small molecules realizes efficient RTP emission with effective energy transfer by modulating energy levels between them. [27][28][29][30] Based on these strategies, the constructed RTP materials are endowed with various luminescent properties in different physical conditions, which makes them exhibit tremendous application value in various fields including light-emitting diodes, anti-counterfeiting, sensors, and bioimaging. In this review, we summarize the recent progress with the application of organic RTP materials constructed by the above strategies.…”

Section: Xiang Mamentioning

confidence: 99%

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

2023

Ind. Chem. Mater.

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“…[1][2][3][4][5][6][7][8][9][10][11] Among them, metal-free room-temperature phosphorescence (RTP) materials have witnessed noteworthy progress in RTP performance improvements and diverse applications. [12][13][14][15][16][17][18][19][20][21][22] Consequently, many attractive metal-free RTP materials, including crystalline small molecules, [23][24][25][26] amorphous polymers, [18,[27][28][29][30][31][32] and organic/inorganic hybrid materials, [33][34][35][36][37][38] have been developed taking advantage of the weak nonradiative transition of organic phosphors in rigid microenvironments. [39][40][41][42][43][44][45] Generally, organic phosphors showed efficient phosphorescence at low temperatures because they are ossified.…”

Section: Introductionmentioning

confidence: 99%

Smart phosphorescence from solid to water through progressive assembly strategy based on dual phosphorescent sources

Xia

Wang

et al. 2023

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Developing smart room‐temperature phosphorescence (RTP) materials with facile and efficient strategies have attracted increasing attention. Herein, tunable RTP materials with two phosphorescent sources and stepwise enhanced phosphorescence in water are obtained through an in‐situ self‐assembly strategy based on the sensitization of phosphors by trimesic acid (TMA) through simple doping and the rigidification of phosphors by hydrogen‐bonded organic frameworks (HOFs). As expected, doped TMA+phosphors simultaneously promote the RTP emission of phosphors and maintain TMA phosphorescence. In‐situ assembled HOF(MA‐TMA)@phosphors facilitate smart RTP emission in water due to the coexistence of phosphorescent HOF(MA‐TMA) host and phosphors guest. Additionally, such RTP materials with good processability demonstrate the application potential in information security, benefitting from their varied afterglow lifetimes and easy luminous recognition in the darkness. This work will inspire the design of dual phosphorescent source RTP systems and provide new strategies for the development of smart RTP materials in water.

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Highly efficient organic long persistent luminescence based on host–guest doping systems

Abstract: Recently, organic long persistent luminescence (OLPL) has attracted widespread attention as a new luminescence pathway initiated by exciplex. However, low quantum yield, few alternative molecules and expensive fabrication cost seriously...

Cited by 27 publications

References 44 publications

Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Electron Donor‐Acceptor Binary System

Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Electron Donor‐Acceptor Binary System

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

Smart phosphorescence from solid to water through progressive assembly strategy based on dual phosphorescent sources

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