scholarly journals Carbon dots in zeolites: A new class of thermally activated delayed fluorescence materials with ultralong lifetimes

2017 ◽  
Vol 3 (5) ◽  
pp. e1603171 ◽  
Author(s):  
Jiancong Liu ◽  
Ning Wang ◽  
Yue Yu ◽  
Yan Yan ◽  
Hongyue Zhang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
New Class

scholarly journals Molecular design of efficient yellow- to red-emissive alkynylgold(iii) complexes for the realization of thermally activated delayed fluorescence (TADF) and their applications in solution-processed organic light-emitting devices

2021 ◽  
Author(s):  
Cathay Chai Au-Yeung ◽  
Lok-Kwan Li ◽  
Man-Chung Tang ◽  
Shiu-Lun Lai ◽  
Wai-Lung Cheung ◽  
...  
Keyword(s):  
Molecular Design ◽  
Delayed Fluorescence ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Thermally Activated ◽  
New Class ◽  
Organic Light ◽  
Tunable Emission

We report the design of a new class of fused heterocyclic alkynyl ligand-containing gold(iii) complexes, which shows tunable emission colors spanning yellow to red region and exhibits thermally activated delayed fluorescence (TADF) properties.

scholarly journals Zeolite-confined carbon dots: tuning thermally activated delayed fluorescence emission via energy transfer

2020 ◽  
Vol 4 (5) ◽  
pp. 1404-1410 ◽  
Author(s):  
Hongyue Zhang ◽  
Jiancong Liu ◽  
Bolun Wang ◽  
Kaikai Liu ◽  
Guangrui Chen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
Carbon Dots ◽  
Energy Transfer Process ◽  
Fluorescence Emission ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated

CD@zeolite composites with tunable TADF emission via an energy transfer process between confined CDs.

scholarly journals N-Rich Electron Acceptor: Triplet Harvesting in Multichromophoric Pyridoquinoxaline and Pyridopyrazine-Based Organic Emitters

2020 ◽  
Author(s):  
BAHADUR SK ◽  
Samarth Sharma ◽  
Anto James ◽  
Subhankar Kundu ◽  
Abhijit Patra
Keyword(s):  
Energy Gap ◽  
Delayed Fluorescence ◽  
Triplet States ◽  
Triplet Energy ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
New Class ◽  
State Security ◽  
Linkage Position ◽  
Triplet Harvesting

<p></p><p>Control of nonradiative deactivation of triplet states and tuning the singlet-triplet energy gap (ΔE<sub>ST</sub>) are the major challenges to develop materials exhibiting thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP). Herein, we propose a new class of multichromophoric tridonor-acceptor (D<sub>3</sub>-A) compounds with rigid and flexible π-spacer having N-rich pyridoquinoxaline (PQ) and pyridopyrazine (PZ) acceptor core, respectively. The molecule with carbazole (Cz) donors at <i>meta</i> to quinoxaline (QX) nitrogen of rigid PQ core exhibits TADF. Whereas, the variation of the linkage position of Cz to PQ as well as twisted and flexible PZ core show predominantly RTP due to relatively higher singlet-triplet energy gap (ΔE<sub>ST</sub>). Increasing the donor strength with phenoxazine (PO) in PZ system leads to simultaneous TADF and RTP. Further, we demonstrate the promising scope of all-organic triplet harvesting materials in solid-state security encryption.</p><br><p></p>

scholarly journals N-Rich Electron Acceptor: Triplet Harvesting in Multichromophoric Pyridoquinoxaline and Pyridopyrazine-Based Organic Emitters

2020 ◽  
Author(s):  
BAHADUR SK ◽  
Samarth Sharma ◽  
Anto James ◽  
Subhankar Kundu ◽  
Abhijit Patra
Keyword(s):  
Energy Gap ◽  
Delayed Fluorescence ◽  
Triplet States ◽  
Triplet Energy ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
New Class ◽  
State Security ◽  
Linkage Position ◽  
Triplet Harvesting

<p></p><p>Control of nonradiative deactivation of triplet states and tuning the singlet-triplet energy gap (ΔE<sub>ST</sub>) are the major challenges to develop materials exhibiting thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP). Herein, we propose a new class of multichromophoric tridonor-acceptor (D<sub>3</sub>-A) compounds with rigid and flexible π-spacer having N-rich pyridoquinoxaline (PQ) and pyridopyrazine (PZ) acceptor core, respectively. The molecule with carbazole (Cz) donors at <i>meta</i> to quinoxaline (QX) nitrogen of rigid PQ core exhibits TADF. Whereas, the variation of the linkage position of Cz to PQ as well as twisted and flexible PZ core show predominantly RTP due to relatively higher singlet-triplet energy gap (ΔE<sub>ST</sub>). Increasing the donor strength with phenoxazine (PO) in PZ system leads to simultaneous TADF and RTP. Further, we demonstrate the promising scope of all-organic triplet harvesting materials in solid-state security encryption.</p><br><p></p>

Facile synthesis of carbon dots in an immiscible system with excitation-independent emission and thermally activated delayed fluorescence

2015 ◽  
Vol 51 (100) ◽  
pp. 17768-17771 ◽  
Author(s):  
Juan Hou ◽  
Long Wang ◽  
Ping Zhang ◽  
Yuan Xu ◽  
Lan Ding
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
Preparative Method ◽  
Delayed Fluorescence ◽  
High Quantum Yield ◽  
Facile Synthesis ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
High Quantum ◽  
Immiscible System

A rapid preparative method for carbon dots in an immiscible system was proposed. CDs possess high quantum yield, excitation-independent emission and thermally activated delayed fluorescence.

scholarly journals Highly efficient carbazolylgold(iii) dendrimers based on thermally activated delayed fluorescence and their application in solution-processed organic light-emitting devices

2021 ◽  
Author(s):  
Lok-Kwan Li ◽  
Wing-Kei Kwok ◽  
Man-Chung Tang ◽  
Wai-Lung Cheung ◽  
Shiu-Lun Lai ◽  
...  
Keyword(s):  
Stable Solution ◽  
Delayed Fluorescence ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Thermally Activated ◽  
New Class ◽  
Organic Light ◽  
Organic Light Emitting Devices

A new class of carbazolylgold(iii) C^C^N dendrimers with thermally activated delayed fluorescence properties has been designed and synthesized for the realzaqtion of operationally stable solution-processed organic light-emitting devices.

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