Results 21 to 30 of about 3,547 (153)

Donor–Acceptor Iptycenes with Thermally Activated Delayed Fluorescence [PDF]

European Journal of Organic Chemistry, 2017
A new donor–acceptor iptycene containing carbazole donors and a thiadiazoloquinoxaline acceptor was synthesized and its photo‐ and electrochemical properties evaluated. The key intermediate 1 allows a lateral modification through cross‐coupling, and the (triisopropylsilyl)acetylene product 2 exhibits bright yellow fluorescence with emission lifetimes ...
Constantin‐Christian A. Voll, Jens U. Engelhart, Markus Einzinger, Marc A. Baldo, Timothy M. Swager   +4 more
openaire   +3 more sources

Open questions on the photophysics of thermally activated delayed fluorescence

Communications Chemistry, 2021
The process of thermally activated delayed fluorescence (TADF) converts non-radiative triplet states into emissive singlet states. Herein we outline the fundamentals of TADF, some of the recent progress in understanding the key material properties ...
Julien Eng, Thomas J. Penfold
doaj   +1 more source

Thermally Activated Delayed Fluorescence Coinage Metal Cluster Scintillator

ACS Central Science, 2023
X-ray scintillators are widely used in medical imaging, industrial flaw detection, security inspection, and space exploration. However, traditional commercial scintillators are usually associated with a high use cost because of their substantial toxicity and easy deliquescence.
Qiu-Chen Peng, Yu-Bing Si, Zhao-Yang Wang, Shu-Heng Dai, Qiu-Shui Chen, Kai Li, Shuang-Quan Zang   +6 more
openaire   +2 more sources

Ultra‐Narrowband Blue Multi‐Resonance Thermally Activated Delayed Fluorescence Materials

Advanced Science, 2023
Ultra‐narrowband blue multi‐resonance‐induced thermally activated delayed fluorescence (MR‐TADF) materials (V‐DABNA and V‐DABNA‐F), consisting of three DABNA subunits possessing phenyl or 2,6‐difluorophenyl substituents on the peripheral nitrogen atoms ...
Susumu Oda, Bungo Kawakami, Masaru Horiuchi, Yuki Yamasaki, Ryosuke Kawasumi, Takuji Hatakeyama   +5 more
doaj   +1 more source

Saturated Red Electroluminescence From Thermally Activated Delayed Fluorescence Conjugated Polymers

Frontiers in Chemistry, 2020
Two sets of conjugated polymers with anthraquinone groups as pendant acceptors were designed and synthesized. The acceptor is tethered to an diphenylamine group via a phenylene bridge, constructing a thermally activated delayed fluorescence (TADF) unit ...
Hongmei Zhan, Yanjie Wang, Kuofei Li, Yuannan Chen, Xiaohu Yi, Keyan Bai, Guohua Xie, Guohua Xie, Yanxiang Cheng   +8 more
doaj   +1 more source

Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials [PDF]

The Journal of Physical Chemistry C, 2019
We expose significant changes in the emission color of carbazole-based thermally activated delayed fluorescence (TADF) emitters that arise from the presence of persistent dimer states in thin films and organic light-emitting diodes (OLEDs). Direct photoexcitation of this dimer state in 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) reveals
Marc K. Etherington, Nadzeya A. Kukhta, Heather F. Higginbotham, Andrew Danos, Aisha N. Bismillah, David R. Graves, Paul R. McGonigal, Nils Haase, Antonia Morherr, Andrei S. Batsanov, Christof Pflumm, Vandana Bhalla, Martin R. Bryce, Andrew P. Monkman   +13 more
openaire   +5 more sources

Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule

SmartMat, 2023
The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL‐voltage curves, newly designed ECL‐time observatory, and ECL spectroscopy.
Liuqing Yang, Lihui Dong, David Hall, Mahdi Hesari, Yoann Olivier, Eli Zysman‐Colman, Zhifeng Ding   +6 more
doaj   +1 more source

Comparative study of thermally activated delayed fluorescent properties of donor–acceptor and donor–acceptor–donor architectures based on phenoxazine and dibenzo[a,j]phenazine

Beilstein Journal of Organic Chemistry, 2022
A new thermally activated delayed fluorescence (TADF) compound based on a donor–acceptor (D–A) architecture (D = phenoxazine; A = dibenzo[a,j]phenazine) has been developed, and its photophysical properties were characterized.
Saika Izumi, Prasannamani Govindharaj, Anna Drewniak, Paola Zimmermann Crocomo, Satoshi Minakata, Leonardo Evaristo de Sousa, Piotr de Silva, Przemyslaw Data, Youhei Takeda   +8 more
doaj   +1 more source

Narrowband Emissive Thermally Activated Delayed Fluorescence Materials

Advanced Optical Materials, 2022
AbstractOrganic thermally activated delayed fluorescence (TADF) materials have attracted significant research interest in the field of organic electronics because of their inherent advantage of 100% exciton utilization capability in organic light‐emitting diodes (OLEDs) without the use of noble metals.
Hyung Jong Kim, Takuma Yasuda
openaire   +1 more source

Operational lifetimes of organic light-emitting diodes dominated by Förster resonance energy transfer

Scientific Reports, 2017
Organic light-emitting diodes are a key technology for next-generation information displays because of their low power consumption and potentially long operational lifetimes.
Hirohiko Fukagawa, Takahisa Shimizu, Yukiko Iwasaki, Toshihiro Yamamoto   +3 more
doaj   +1 more source