Highly Efficient Purely Organic Room-Temperature Phosphorescence Film based on a Selenium-Containing Emitter for Sensitive Oxygen Detection

2021 ◽  
Author(s):  
Shuai Wang ◽  
Haiyang Shu ◽  
Xianchao Han ◽  
Xiaofu Wu ◽  
Hui Tong ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Oxygen Detection ◽  
Highly Efficient ◽  
Donor Acceptor

Developing pure organic room temperature phosphorescence (RTP) materials with high phosphorescence efficiency in film states is important for their applications but remains a great challenge. Herein, a donor-acceptor type RTP...

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%.

scholarly journals Highly Efficient Heavy Atom Free Room Temperature Phosphorescence by Host-Guest Doping

2021 ◽  
Vol 9 ◽  
Author(s):  
Jinzhu Cao ◽  
Meng Zhang ◽  
Manjeet Singh ◽  
Zhongfu An ◽  
Lingfei Ji ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Room Temperature ◽  
Heavy Atom ◽  
Molar Ratio ◽  
Ambient Conditions ◽  
Room Temperature Phosphorescence ◽  
Highly Efficient ◽  
Long Lifetime ◽  
Remarkable Progress

Recently, there has been remarkable progress of the host-guest doped pure organic room-temperature phosphorescence (RTP) materials. However, it remains a great challenge to develop highly efficient host-guest doping systems. In this study, we have successfully developed a heavy atom free pure organic molecular doped system (benzophenone-thianthrene, respectively) with efficient RTP through a simple host-guest doping strategy. Furthermore, by optimizing the doping ratios, the host-guest material with a molar ratio of 100:1 presented an efficient RTP emission with 46% quantum efficiency and a long lifetime of up to 9.17 ms under ambient conditions. This work will provide an effective way to design new organic doping systems with RTP.

Matrix-Free and Highly Efficient Room-Temperature Phosphorescence of Nitrogen-Doped Carbon Dots

Langmuir ◽  
2018 ◽  
Vol 34 (43) ◽  
pp. 12845-12852 ◽  
Author(s):  
Yifang Gao ◽  
Hui Han ◽  
Wenjing Lu ◽  
Yuan Jiao ◽  
Yang Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Matrix Free

scholarly journals Room-Temperature-Phosphorescence-Based Dissolved Oxygen Detection by Core-Shell Polymer Nanoparticles Containing Metal-Free Organic Phosphors

2017 ◽  
Vol 129 (51) ◽  
pp. 16425-16429 ◽  
Author(s):  
Youngchang Yu ◽  
Min Sang Kwon ◽  
Jaehun Jung ◽  
Yingying Zeng ◽  
Mounggon Kim ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Room Temperature ◽  
Polymer Nanoparticles ◽  
Core Shell ◽  
Room Temperature Phosphorescence ◽  
Metal Free ◽  
Oxygen Detection ◽  
Organic Phosphors

scholarly journals Correction: Highly efficient room-temperature phosphorescence achieved by gadolinium complexes

2020 ◽  
Vol 49 (5) ◽  
pp. 1699-1699
Author(s):  
Boxun Sun ◽  
Chen Wei ◽  
Huibo Wei ◽  
Zelun Cai ◽  
Huanyu Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Dalton Trans ◽  
Highly Efficient ◽  
Gadolinium Complexes

Correction for ‘Highly efficient room-temperature phosphorescence achieved by gadolinium complexes’ by Boxun Sun et al., Dalton Trans., 2019, 48, 14958–14961.

Siloxy Group-Induced Highly Efficient Room Temperature Phosphorescence with Long Lifetime

2016 ◽  
Vol 120 (21) ◽  
pp. 11631-11639 ◽  
Author(s):  
Masaki Shimizu ◽  
Ryosuke Shigitani ◽  
Masaki Nakatani ◽  
Keiko Kuwabara ◽  
Yusuke Miyake ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Highly Efficient ◽  
Long Lifetime

Light‐Harvesting Supramolecular Phosphors: Highly Efficient Room Temperature Phosphorescence in Solution and Hydrogels

2021 ◽  
Author(s):  
Swadhin Garain ◽  
Bidhan Chandra Garain ◽  
Muthusamy Eswaramoorthy ◽  
Swapan K. Pati ◽  
Subi J. George
Keyword(s):  
Room Temperature ◽  
Light Harvesting ◽  
Room Temperature Phosphorescence ◽  
Highly Efficient
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