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.

Bright bluish-green emitting Cu(i) complexes exhibiting efficient thermally activated delayed fluorescence

2021 ◽  
Vol 50 (15) ◽  
pp. 5171-5176
Author(s):  
Chun-Hua Huang ◽  
Mingxue Yang ◽  
Xu-Lin Chen ◽  
Can-Zhong Lu
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Delayed Fluorescence ◽  
High Quantum Yield ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
High Quantum ◽  
Bluish Green

Three strongly emissive Cu(i) complexes exhibiting bright bluish-green thermally activated delayed fluorescence in the solid state with high quantum yield up to 91% were synthesized and characterized.

scholarly journals A new type of polymer carbon dots with high quantum yield: From synthesis to investigation on fluorescence mechanism

Polymer ◽  
2017 ◽  
Vol 116 ◽  
pp. 472-478 ◽  
Author(s):  
Songyuan Tao ◽  
Yubin Song ◽  
Shoujun Zhu ◽  
Jieren Shao ◽  
Bai Yang
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
High Quantum ◽  
New Type

Harnessing Versatile Dynamic Carbon Precursors for Multi-Color Emissive Carbon Dots

2022 ◽  
Author(s):  
Zitong Wei ◽  
Wenyi Lu ◽  
Ximin Wang ◽  
Jiping Ni ◽  
Umme Hani Prova ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
Carbon Allotrope ◽  
High Quantum ◽  
Fluorescent Nanomaterials

Carbon dots (CDs), a relatively new kind of fluorescent nanomaterials superior to other contributors of carbon allotrope due to their excellent biocompatibility, controllable photoluminescence, high quantum yield (QY), unique electronic...

High quantum yield photoluminescent N-doped carbon dots for switch sensing and imaging

Talanta ◽  
2021 ◽  
Vol 222 ◽  
pp. 121663 ◽  
Author(s):  
Zhihui Yi ◽  
Ximing Li ◽  
Hongyu Zhang ◽  
Xiuling Ji ◽  
Wei Sun ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
High Quantum ◽  
Doped Carbon Dots

scholarly journals Hinged and Wide: A New P^P Ligand for Emissive [Cu(P^P)(N^N)][PF6] Complexes

Molecules ◽  
2019 ◽  
Vol 24 (21) ◽  
pp. 3934 ◽  
Author(s):  
Sarah Keller ◽  
Matthias Bantle ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft
Keyword(s):  
Mass Spectrometry ◽  
Excited State ◽  
Quantum Yield ◽  
Delayed Fluorescence ◽  
Ionization Mass ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Single Crystal Structures ◽  
Photoluminescence Quantum Yield ◽  
Deaerated Solution

Heteroleptic [Cu(BIPHEP)(N^N)][PF6] complexes (BIPHEP = 1,1′-biphenyl-2,2′-diylbis(diphenylphosphane)), in which N^N is 2,2′-bipyridine (bpy), 6-methyl-2,2′-bipyridine (6-Mebpy), 6-ethyl-2,2′-bipyridine (6-Etbpy), or 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me2bpy), have been synthesized and characterized using multinuclear NMR spectroscopies and electrospray ionization mass spectrometry. The single crystal structures of [Cu(BIPHEP)(bpy)][PF6]∙CH2Cl2, [Cu(BIPHEP)(5,5′-Me2bpy)][PF6]∙CH2Cl2, [Cu(BIPHEP)(6-Mebpy)][PF6]∙Et2O∙0.5H2O and [Cu(BIPHEP)(6-Etbpy)][PF6] confirm distorted tetrahedral {Cu(P^P)(N^N)} coordination environments. Each compound shows a quasi-reversible Cu+/Cu2+ process. In deaerated solution, the compounds are weak emitters. Powdered samples are yellow emitters (λemmax in the range 558–583 nm) and [Cu(BIPHEP)(5,5′-Me2bpy)][PF6] exhibits the highest photoluminescence quantum yield (PLQY = 14%). On cooling to 77 K (frozen 2-methyloxolane), the emission maxima are red-shifted and the excited state lifetimes increase from τ1/2 < 8 μs, to τ1/2 values of up to 53 μs, consistent with the compounds with N^N = 6-Mebpy, 6-Etbpy and 5,5′-Me2bpy exhibiting thermally activated delayed fluorescence (TADF).

Sign in / Sign up

Export Citation Format

Share Document