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Ultralong lifetime and efficient room temperature phosphorescent carbon dots through multi-confinement structure design
Ultralong lifetime and efficient room temperature phosphorescent carbon dots through multi-confinement structure design
- Source :
- Nature Communications, Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)
- Publication Year :
- 2020
-
Abstract
- Room temperature phosphorescence materials have inspired extensive attention owing to their great potential in optical applications. However, it is hard to achieve a room temperature phosphorescence material with simultaneous long lifetime and high phosphorescence quantum efficiency. Herein, multi-confined carbon dots were designed and fabricated, enabling room temperature phosphorescence material with simultaneous ultralong lifetime, high phosphorescence quantum efficiency, and excellent stability. The multi-confinement by a highly rigid network, stable covalent bonding, and 3D spatial restriction efficiently rigidified the triplet excited states of carbon dots from non-radiative deactivation. The as-designed multi-confined carbon dots exhibit ultralong lifetime of 5.72 s, phosphorescence quantum efficiency of 26.36%, and exceptional stability against strong oxidants, acids and bases, as well as polar solvents. This work provides design principles and a universal strategy to construct metal-free room temperature phosphorescence materials with ultralong lifetime, high phosphorescence quantum efficiency, and high stability for promising applications, especially under harsh conditions.<br />For room temperature phosphorescence (RTP) materials to reach their potential for optical applications, new materials with improved performance must be realized. Here, the authors report multi-confined carbon dots as high stability RTP materials with long afterglow lifetime & high efficiency.
- Subjects :
- Physics::General Physics
Materials science
Science
General Physics and Astronomy
Nanoparticle
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
Article
lcsh:Science
Multidisciplinary
business.industry
General Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Afterglow
Improved performance
chemistry
Excited state
Optical materials
Structure design
Optoelectronics
Nanoparticles
lcsh:Q
Quantum efficiency
0210 nano-technology
business
Phosphorescence
Carbon
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 11
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature communications
- Accession number :
- edsair.doi.dedup.....ad853dae4228492f0f43c75642ca9e5c