Achievement of persistent and efficient organic room-temperature phosphorescence with temperature-response by adjusting the proportion of excited-state configurations in coupled molecules

2019 ◽  
Vol 7 (27) ◽  
pp. 8250-8254 ◽  
Author(s):  
Junru Chen ◽  
Naveed Ur Rahman ◽  
Zhu Mao ◽  
Juan Zhao ◽  
Zhiyong Yang ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Temperature Response ◽  
Room Temperature Phosphorescence

Achieving the bright pRTP compound OMe-SPhT with temperature-response by adjusting the proportion of excited-state configurations in coupled molecules.

scholarly journals Regioisomeric Effect on the Excited-State Fate Leading to Room-Temperature Phosphorescence or Thermally Activated Delayed Fluorescence in a Dibenzophenazine-Cored Donor–Acceptor–Donor System

2021 ◽  
Author(s):  
Takumi Hosono ◽  
Nicolas Oliveira Decarli ◽  
Paola Zimmermann Crocomo ◽  
Tsuyoshi Goya ◽  
Leonardo Evaristo de Sousa ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Quantum Yields ◽  
Room Temperature Phosphorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Emission Behavior

Exploring design principle for switching thermally activated dealyed fluorescecne (TADF) and room temperature phosphorescence (RTP) is a fundamentally imporant research in developing triplet-mediated photofunctional organic materials. Herein systematic studies on the regioisomeric and substituents effects in a twisted donor–acceptor–donor (D–A–D) scaffold (A = dibenzo[a,j]phenazine; D = dihydrophenazasiline) on the fate of the excited state have been performed. The study revealed that the regiosiomerism clearly affects the emission behavior of the D–A–D compounds. Distinct difference in TADF, dual TADF & RTP, and dual RTP were observed, depending on the host used. Furthermore, OLED organic light-emitting diodes (OLEDs) fabricated with the developed emitters achieved high external quantum yields for RTP-based OLEDS up to 7.4%.

Elucidating the Excited State of Mechanoluminescence in Organic Luminogens with Room-Temperature Phosphorescence

2017 ◽  
Vol 129 (48) ◽  
pp. 15501-15505 ◽  
Author(s):  
Jie Yang ◽  
Xuming Gao ◽  
Zongliang Xie ◽  
Yanbin Gong ◽  
Manman Fang ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Room Temperature Phosphorescence

Tuning the singlet–triplet energy gap of AIE luminogens: crystallization-induced room temperature phosphorescence and delay fluorescence, tunable temperature response, highly efficient non-doped organic light-emitting diodes

2015 ◽  
Vol 17 (2) ◽  
pp. 1134-1141 ◽  
Author(s):  
Jie Li ◽  
Yibin Jiang ◽  
Juan Cheng ◽  
Yilin Zhang ◽  
Huimin Su ◽  
...  
Keyword(s):  
Room Temperature ◽  
Light Emitting Diodes ◽  
Energy Gap ◽  
Temperature Response ◽  
Organic Light Emitting Diodes ◽  
Room Temperature Phosphorescence ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Delay Fluorescence

Tuning singlet–triplet energy gap of AIE luminogens: crystallization-induced phosphorescence, delay fluorescence and efficient non-doped OLEDs.

scholarly journals Converting the molecular luminescence to ultralong room-temperature phosphorescence via excited states modulation on sulfone-containing heteroaromatics

2021 ◽  
Author(s):  
Zetong Ma ◽  
Zhiqiang Yang ◽  
Lan Mu ◽  
Lisong Deng ◽  
Liangjian Chen ◽  
...  
Keyword(s):  
Excited State ◽  
Molecular Orbital ◽  
Excited States ◽  
Room Temperature ◽  
Relaxation Processes ◽  
Room Temperature Phosphorescence ◽  
Molecular Luminescence

Manipulating molecular orbital properties of excited state, and then the relevant relaxation processes, can greatly alter the emission behaviors of luminophores. Herein we reported a vivid example of this respect...

Elucidating the Excited State of Mechanoluminescence in Organic Luminogens with Room-Temperature Phosphorescence

2017 ◽  
Vol 56 (48) ◽  
pp. 15299-15303 ◽  
Author(s):  
Jie Yang ◽  
Xuming Gao ◽  
Zongliang Xie ◽  
Yanbin Gong ◽  
Manman Fang ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Room Temperature Phosphorescence
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