Mechanically induced single-molecule white-light emission of excited-state intramolecular proton transfer (ESIPT) materials

2021 ◽  
Author(s):  
Quan Huang ◽  
Qiang Guo ◽  
Jingbo Lan ◽  
Rongchuan Su ◽  
You Ran ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Single Molecule ◽  
White Light ◽  
Light Emission ◽  
Intramolecular Proton Transfer ◽  
White Light Emission ◽  
Mechanical Grinding ◽  
Emission Color ◽  
Color Switching

Disclosed herein is the first example of a mechanically induced single-molecule white-light emission of ESIPT materials. Mechanical grinding transforms intermolecular packing motifs, enabling emission color switching from yellowish green to white.

Excited‐State Modulation for Controlling Fluorescence and Phosphorescence Pathways toward White‐Light Emission

2019 ◽  
Vol 7 (20) ◽  
pp. 1900767 ◽  
Author(s):  
Changfu Feng ◽  
Shuai Li ◽  
Xiaoxiao Xiao ◽  
Yilong Lei ◽  
Hua Geng ◽  
...  
Keyword(s):  
Excited State ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Fluorescence And Phosphorescence

scholarly journals Emission color-tunable oxazol(in)yl-substituted excited-state intramolecular proton transfer (ESIPT)-based luminophores

2020 ◽  
Vol 56 (98) ◽  
pp. 15430-15433
Author(s):  
Dominik Göbel ◽  
Pascal Rusch ◽  
Daniel Duvinage ◽  
Nadja C. Bigall ◽  
Boris J. Nachtsheim
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Emission Color ◽  
Color Tunable

Oxazolinyl- and arylchalcogenazolyl-substituted hydroxyfluorenes exhibiting excited-state intramolecular proton transfer (ESIPT) are described as potent and highly modular luminophores.

Dopant and excitation wavelength dependent color tunability in Dy3+:YVO4 and Dy3+/Eu3+:YVO4 microparticles towards white light emission

2016 ◽  
Vol 45 (41) ◽  
pp. 16231-16239 ◽  
Author(s):  
Anna M. Kaczmarek ◽  
Dorine Ndagsi ◽  
Rik Van Deun
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Excitation Wavelength ◽  
Emission Color ◽  
Color Tunability

The emission color of Dy:YVO4 and Dy,Eu:YVO4 microstructures could be tuned towards white light and white light with a yellow undertone through varying the Ln3+ doping percentages as well as the excitation wavelengths.

scholarly journals Secondary Through-Space Interactions: Achieving Single-Molecule White-Light Emission from Clusteroluminogens with Isolated Phenyl Rings

2022 ◽  
Author(s):  
Jianyu Zhang ◽  
Parvej Alam ◽  
Siwei Zhang ◽  
Hanchen Shen ◽  
Lianrui Hu ◽  
...  
Keyword(s):  
Single Molecule ◽  
White Light ◽  
Light Emission ◽  
Photophysical Properties ◽  
White Light Emission ◽  
Excitation Wavelength ◽  
Conjugated Molecules ◽  
Long Wavelength ◽  
Phenyl Rings ◽  
Donor Acceptor

Clusteroluminogens (CLgens) refer to some non-conjugated molecules that show visible light due to the formation of aggregates and unique electronic properties with through-space interactions (TSI). Although mature and systematic theories of molecular photophysics have been developed to study conventional conjugated chromophores, it is still challenging to endow CLgens with designed photophysical properties by manipulating TSI. Herein, three CLgens with non-conjugated donor-acceptor structures and different halide substituents with secondary TSI are designed and synthesized. These molecules show multiple emissions and even white-light emission in the crystalline state and the intensity ratio of these multiple emission peaks is easily manipulated by changing the halide atom and excitation wavelength. Experimental and theoretical results successfully disclose the electronic nature of these multiple emissions: through-space conjugation for short-wavelength fluorescence, through-space charge transfer based on secondary TSI for long-wavelength fluorescence, and room-temperature phosphorescence. The introduction of secondary TSI to CLgens not only enriches their varieties of photophysical properties but also inspires the establishment of novel aggregate photophysics for clusteroluminescence.

New heterometallic Ir(iii)2–Eu(iii) complexes: white light emission from a single molecule

2015 ◽  
Vol 44 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Andrea Baschieri ◽  
Sara Muzzioli ◽  
Elia Matteucci ◽  
Stefano Stagni ◽  
Massimiliano Massi ◽  
...  
Keyword(s):  
Single Molecule ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Pure White

Pure white light emission from a single-molecule Ir2(iii)–Eu(iii) complex can be achieved with appropriate ligands.

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